Intense Light Irradiation Research Articles

Fabrication of graphite by pulsed light irradiation of network silicon bearing anthryl groups

We report structural changes of spin-coated network silicon bearing anthryl groups, poly(9-anthrylsilylene) (PAS), by intense pulsed light (IPL) irradiation. The structural changes are achieved in a few hundred microseconds resulting in the formation of graphite films with sheet resistance up to 50 Ω/sq. The conditions of IPL were optimized in order to tune the formation of graphite films as a function of exposure energy and film thickness. The effect of IPL conditions on the morphology and the electrical properties of PAS films were investigated by UV–visible, X-ray photoelectron (XPS), and Raman spectroscopies, as well as atomic force microscopy and sheet resistance measurements. The elimination of network silicon is evidenced in the changes of XPS. The correlation between Raman spectroscopy analysis and sheet resistance exhibit the formation of graphite films.

Inherent Photodegradability of Polymethacrylate Hydrogels: Straightforward Access to Biocompatible Soft Microstructures

AbstractHydrogels are important functional materials useful for 3D cell culture, tissue engineering, 3D printing, drug delivery, sensors, or soft robotics. The ability to shape hydrogels into defined 3D structures, patterns, or particles is crucial for biomedical applications. Here, the rapid photodegradability of commonly used polymethacrylate hydrogels is demonstrated without the need to incorporate additional photolabile functionalities. Hydrogel degradation depths are quantified with respect to the irradiation time, light intensity, and chemical composition. It can be shown that these parameters can be utilized to control the photodegradation behavior of polymethacrylate hydrogels. The photodegradation kinetics, the change in mechanical properties of polymethacrylate hydrogels upon UV irradiation, as well as the photodegradation products are investigated. This approach is then exploited for microstructuring and patterning of hydrogels including hydrogel gradients as well as for the formation of hydrogel particles and hydrogel arrays of well‐defined shapes. Cell repellent but biocompatible hydrogel microwells are fabricated using this method and used to form arrays of cell spheroids. As this method is based on readily available and commonly used methacrylates and can be conducted using cheap UV light sources, it has vast potential to be applied by laboratories with various backgrounds and for diverse applications.

Laser Annealing Improves the Photoelectrochemical Activity of Ultrathin MoSe2 Photoelectrodes.

Understanding light-matter interactions in transition-metal dichalcogenides (TMDs) is critical for optoelectronic device applications. Several studies have shown that high intensity light irradiation can tune the optical and physical properties of pristine TMDs. The enhancement in optoelectronic properties has been attributed to a so-called laser annealing effect that heals chalcogen vacancies. However, it is unknown whether laser annealing improves functional properties such as photocatalytic activity. Here, we show that high intensity supra band gap illumination improves the photoelectrochemical activity of MoSe2 nanosheets for iodide oxidation in indium doped tin oxide/MoSe2/I-, I3-/Pt liquid junction solar cells. Ensemble-level photoelectrochemical measurements show that, on average, illuminating MoSe2 thin films with 1 W/cm2 532 nm excitation increases the photoelectrochemical current by 142% and shifts the photocurrent response to more favorable (negative) potentials. Scanning photoelectrochemical microscopy measurements reveal that pristine bilayer (2L)-MoSe2, trilayer (3L)-MoSe2, and multilayer-thick nanosheets are initially inactive for iodide oxidation. The light treatment activates 2L-MoSe2 and 3L-MoSe2 materials, and the activation process initiates at the edge sites. The photocurrent enhancement is more significant for 2L-MoSe2 than for 1L-MoSe2. Multilayer-thick MoSe2 remains inactive for iodide oxidation even after the laser treatment. Our microscopy measurements reveal that the laser-induced enhancement effect depends critically on MoSe2 layer thickness. X-ray photoelectron spectroscopy measurements further show that the laser treatment oxidizes Mo(IV) species that are initially associated with Se vacancies. Ambient oxygen fills the Se vacancies and removes trap states, thereby increasing the overall photogenerated carrier collection efficiency. To the best of our knowledge, this work represents the first report on using laser to enhance the photoelectrocatalytic properties of few-layer-thick TMDs. The simple and rapid laser annealing procedure is a promising strategy to tune the reactivity of TMD-based photoelectrochemical cells for electricity and chemical fuel production.

Intense-pulsed-light irradiation compared to thermal heating for fabrication of VO2 nanoparticle-based thermochromic films

Vanadium dioxide (VO2) thin films have significant attention as thermochromic layers since they present an attracted modification of optical transmission in the near-infrared region while remaining transparent. A solution processing method is convenient and cost-efficient for the fabrication of VO2 films, however, this method requires high-temperature and long-time thermal reduction and post annealing to obtain highly crystallized VO2 films. Thermal and intense pulsed light (IPL) annealing are employed in order to compare the microstructural evolution, thermochromic properties and their feasibility for fabrication of VO2 nanoparticle-based films. A remarkable improvement in visible transmittance and thermochromic property of VO2 nanoparticle ink films has been achieved by intense pulsed light (IPL) irradiation compared to thermal annealing: the VO2 films IPL annealed with 400 pulses have decent visible light transmittance (Tvis) of 55.2% at 550 nm, excellent infrared modulation at 2000 nm (ΔT2000 nm) of 45.2%, and salient solar modulation efficiency (ΔTsol) of 9.2% while those thermally annealed at 600 °C show Tvis of 24.3%, ΔT2000 nm of 20.9% and ΔTsol of 5.0%. These results indicate that IPL irradiation could open an efficient way to fabricate VO2 nanoparticle-based films and solution-processed thermochromic smart windows.

Removal of Sulfamethoxazole, Sulfathiazole and Sulfamethazine in their Mixed Solution by UV/H2O2 Process.

Sulfamethoxazole (SMZ), sulfathiazole (STZ) and sulfamethazine (SMT) are typical sulfonamides, which are widespread in aqueous environments and have aroused great concern in recent years. In this study, the photochemical oxidation of SMZ, STZ and SMT in their mixed solution using UV/H2O2 process was innovatively investigated. The result showed that the sulfonamides could be completely decomposed in the UV/H2O2 system, and each contaminant in the co-existence system fitted the pseudo-first-order kinetic model. The removal of sulfonamides was influenced by the initial concentration of the mixed solution, the intensity of UV light irradiation, the dosage of H2O2 and the initial pH of the solution. The increase of UV light intensity and H2O2 dosage substantially enhanced the decomposition efficiency, while a higher initial concentration of mixed solution heavily suppressed the decomposition rate. The decomposition of SMZ and SMT during the UV/H2O2 process was favorable under neutral and acidic conditions. Moreover, the generated intermediates of SMZ, STZ and SMT during the UV/H2O2 process were identified in depth, and a corresponding degradation pathway was proposed.

Comparative study of different functionalized graphene-nanoplatelet aqueous nanofluids for solar energy applications

The optical properties of nanofluids are peculiar and interesting for a variety of applications. Among them, the high light extinction coefficient of nanofluids can be useful in linear parabolic concentrating solar systems, while their properties under high light irradiation intensities can be exploited for direct solar steam generation. The optical characterization of colloids, including the study of non-linear optical properties, is thus a needed step to design the use of such novel materials for solar energy exploitation. In this work, we analysed two different types of nanofluids, consisting of polycarboxylate chemically modified graphene nanoplatelets (P-GnP) and sulfonic acid-functionalized graphene nanoplatelets (S-GnP) dispersed in water, at three concentrations from 0.005 wt% to 0.05 wt%. Moderately stable nanofluids were achieved with favourable light extinction properties, as well as a non-linear optical behaviour under high input solar intensities.

Tuning dielectric-semiconductor interfacial properties in organic phototransistors for ultralow light detection

The quality of the dielectric-semiconductor interface plays a very crucial role in determining the photosensory performances of the organic field effect transistors. Herein, we have investigated the influence of polymer molecular weight on the photosensing behaviour of the organic transistors. In this study, we find high molecular weight PMMA to be more effective as gate dielectric in phototransistor applications compared to the low molecular weight PMMA due to the better morphological arrangements of the active semiconducting layer on top of its surface. The maximum values of photosensitivity and responsivity improved substantially from 3.5 × 10 4 and 8.3 × 10 3 A/W in the low molecular weight PMMA devices to 10 5 and 6.9 × 10 4 A/W in the high molecular weight PMMA devices, respectively, under same intensity light irradiation. Moreover, we have also proposed a simple, yet highly efficient interface modification technique to enhance the photosensitivity of the transistors under low light illumination through the plasma treatment of the dielectric layer. After the interface modification of the high molecular weight PMMA devices, the photosensitivity value enhanced significantly from 3.67 × 10 2 to 7.08 × 10 3 under an ultralow optical power of 5 μW/cm 2 . Post interface modification improvements in the device photosensitivity values were attributed to the plasma induced generation of polar surface functionalities which effectively enhance the number of free holes in the channel region by trapping the photo-generated electrons at the interface. This report, thus, represents a step forward towards improving the performance of the phototransistors for their applications in high performance organic optoelectronic devices. • Polymer molecular weight influenced transistor photoresponse has been explored. • Semiconductor grain structure strongly correlates with the device photoresponse. • Strategy of dielectric air plasma treatment has been demonstrated. • Optimum plasma treatment time has been reached to achieve ultralow light sensitivity.

Noninvasive and safe cell viability assay for Euglena gracilis using natural food pigment.

Noninvasive and safe cell viability assay is required in many fields such as regenerative medicine, genetic engineering, single-cell analysis, and microbial food culture. In this case, a safe and inexpensive method which is a small load on cells and the environment is preferable without requiring expensive and space-consuming equipment and a technician to operate. We examined eight typical natural food pigments to find Monascus pigment (MP) or anthocyanin pigment (AP) works as a good viability indicator of dye exclusion test (DET) for Euglena gracilis which is an edible photosynthetic green microalga. This is the first report using natural food pigments as cell viability assay. Euglena gracilis stained by MP or AP can be visually judged with a bright field microscope. This was spectrally confirmed by scan-free, non-invasive absorbance spectral imaging A(x, y, λ) microscopy of single live cells and principal component analysis (PCA). To confirm the ability of staining dead cells and examine the load on the cells, these two natural pigments were compared with trypan blue (TB) and methylene blue (MP), which are synthetic dyes conventionally used for DET. As a result, MP and AP had as good ability of staining dead cells treated with microwave as TB and MB and showed faster and more uniform staining for dead cells in benzalkonium chloride than them. The growth curve and the ratio of dead cells in the culture showed that the synthetic dyes inhibit the growth of E. gracilis, but the natural pigments do not. As the cell density increased, however, AP increased the ratio of stained cells, which was prevented by the addition of glucose. MP can stain dead cells in a shorter time than AP, while AP is more stable in color against long-term irradiation of intense light than MP. Due to the low toxicity of these pigments, viability of cells in culture can be monitored with them over a long period.

High-Resolution and Large-Area Patterning of Highly Conductive Silver Nanowire Electrodes by Reverse Offset Printing and Intense Pulsed Light Irradiation.

Conventional printing technologies such as inkjet, screen, and gravure printing have been used to fabricate patterns of silver nanowire (AgNW) transparent conducting electrodes (TCEs) for a variety of electronic devices. However, they have critical limitations in achieving micrometer-scale fine line width, uniform thickness, sharp line edge, and pattering of various shapes. Moreover, the optical and electrical properties of printed AgNW patterns do not satisfy the performance required by flexible integrated electronic devices. Here, we report a high-resolution and large-area patterning of highly conductive AgNW TCEs by reverse offset printing and intense pulsed light (IPL) irradiation for flexible integrated electronic devices. A conductive AgNW ink for reverse offset printing is prepared by carefully adjusting the composition of AgNW content, solvents, surface energy modifiers, and organic binders for the first time. High-quality and high-resolution AgNW micropatterns with various shapes and line widths are successfully achieved on a large-area plastic substrate (120 × 100 mm2) by optimizing the process parameters of reverse offset printing. The reverse offset printed AgNW micropatterns exhibit superior fine line widths (up to 6 μm) and excellent pattern quality such as sharp line edge, fine line spacing, effective wire junction connection, and smooth film roughness. They are post-processed with IPL irradiation, thereby realizing excellent optical, electrical, and mechanical properties. Furthermore, flexible OLEDs and heaters based on reverse offset printed AgNW micropatterns are successfully fabricated and characterized, demonstrating the potential use of the reverse offset printing for the conductive AgNW ink.

Degradation of typical macrolide antibiotic roxithromycin by hydroxyl radical: kinetics, products, and toxicity assessment.

The degradation of roxithromycin (ROX) by hydroxyl radical (·OH) generated by UV/H2O2 was systematically investigated in terms of degradation kinetics, effects of water chemistry parameters, oxidation products, as well as toxicity evaluation. The degradation of ROX by UV/H2O2 with varying light irradiation intensity, initial ROX concentration, and H2O2 concentration in pure water and wastewater all followed pseudo-first-order kinetics. The second-order rate constant for reaction between ROX and ·OH is 5.68 ± 0.34 × 109/M/s. The degradation rate of ROX increased with the pH; for instance, the apparent degradation rates were 0.0162 and 0.0309/min for pH4 and pH9, respectively. The presence of natural organic matter (NOM) at its concentrations up to 10mg C/L did not significantly affect the removal of ROX. NO3- and NO2- anions inhibited the degradation of ROX due to the consumption of ·OH in reactions with these ions. Fe3+, Cu2+, and Mg2+ cations inhibited the degradation of ROX, probably because of the formation of ROX-metal chelates. A total of ten degradation products were tentatively identified by HPLC/LTQ-Orbitrap XL MS, which mainly derived from the attack on the oxygen linking the lactone ring and the cladinose moiety, tertiary amine and oxime side chain moiety by ·OH. The toxicity evaluation revealed that UV/H2O2 treatment of ROX induced the toxicity to bioluminescent bacteria increased.

Photoresponsive Self-Assembled DNA Nanomaterials: Design, Working Principles, and Applications.

Photoresponsive DNA nanomaterials represent a new class of remarkable functional materials. By adjusting the irradiation wavelength, light intensity, and exposure time, various photocontrolled DNA-based systems can be reversibly or irreversibly regulated in respect of their size, shape, conformation, movement, and dissociation/association. This Review introduces the most updated progress in the development of photoresponsive DNA-based system and emphasizes their advantages over other stimuli-responsive systems. Their design and mechanisms to trigger the photoresponses are shown and discussed. The potential application of these photon-responsive DNA nanomaterials in biology, biomedicine, materials science, nanophotonic and nanoelectronic are also covered and described. The challenges faced and further directions of the development of photocontrolled DNA-based systems are also highlighted.

Effect of intense pulsed light on the deactivation of lipase: Enzyme-deactivation kinetics and tertiary structural changes by fragmentation

The effect of intense pulsed light (IPL) irradiation on Chromobacterium viscosum lipase was investigated with a primary focus on catalytic activity and molecular structure. During IPL irradiation, lipase activity decreased significantly with increasing pulse fluence (Fp) and exposure time (te). IPL-induced deactivation kinetics were further elucidated based on a two-step series-type deactivation model (constant deactivation rate k1 >k2). Fp was found to be the dominant variable affecting the degree of lipase deactivation, and residual activity was not associated with increasing te below a certain Fp energy density (2.66 mJ/cm2), implying a critical threshold for IPL-induced deactivation of lipase. From the results of fluorescence spectroscopy and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), we determined that IPL-induced deactivation was caused by fragmentation, leading to lipase tertiary structural changes. Furthermore, the results of FindPept analysis and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) indicated that the internal sensitive bonds of lipase were cleaved preferentially by IPL, such that IPL irradiation induced site-sensitive fragmentation and peptide bond cleavage.

Facile Preparation of Micrometer KClO₄/Zr Energetic Composite Particles with Enhanced Light Radiation.

Developing energetic composite materials consisting of fuel and oxidizer is an effective strategy to enhance the energy release property. However, this strategy has rarely been applied in Potassium Perchlorate (KClO4)-containing energetic materials, even though KClO4 is a much stronger oxidizer than most previously reported metal-oxide oxidizer. One of the main obstacles is the lack of simple and in situ ways to introduce KClO4 into the composite. In present work, micrometer KClO4/Zirconium (KClO4/Zr) composite particles were successfully prepared using a facile chemical solution-deposition method. The structure and particle morphologies of as-obtained KClO4/Zr composite were characterized by X-ray diffraction (XRD) and scanning electronic microscope (SEM)-EDS (Energy Dispersive Spectrometer). The evolutionary combustion behavior was evaluated using flame-based light-radiation spectra and successive photography technique. Results showed that the morphology, light-radiation properties and flame-evolution characteristics of KClO4/Zr composite varied with the content of KClO4 and the particle size of Zr. Compared with the mechanical mixture of KClO4/Zr, the KClO4/Zr composite showed much higher light-radiation intensity and longer light-emission duration time after reasonably controlling the preparation parameters. Flame photographs revealed that the enhanced light radiation of KClO4/Zr composite should be ascribed to higher use efficiency of “oxygen” in the oxidizer, which promoted both the solid–solid and solid–gas reaction pathways between KClO4 and Zr.

Systematic tuning of the photo-dielectric effect in Ba(Al1–xZnx)2O4–δ

Systematic tuning of photo-induced enhancement of the dielectric permittivity (i.e., the photo-dielectric effect) in Ba(Al1–xZnx)2O4–δ (BAZ-x) has been demonstrated by changing Zn concentration x and intensity of the incident light. The relative change of the dielectric permittivity (ε′), defined as Δε′photo/ε′dark, increases linearly with an increase in the Zn concentration (x), finally reaching approximately 30% at 1 MHz. The dependence of Δε′photo/ε′dark on the intensity of the incident light shows a two-step growth as the irradiation light intensity increases, suggesting the existence of multiple photo-induced processes influencing the photo-dielectric effect of BAZ-x. The results of the present study not only give a clue to the mechanism of the photo-dielectric effect but also aid in the development of innovative photo-tunable functional devices.

The light triggered dissolution of gold wires using potassium ferrocyanide solutions enables cumulative illumination sensing

Electronic systems with on-demand dissolution or destruction capabilities offer unusual opportunities in hardware-oriented security devices, advanced military spying and controlled biological treatment. Here, the dissolution chemistry of gold, generally known as inert metal, in potassium ferricyanide and potassium ferrocyanide solutions has been investigated upon light exposure. While a pure aqueous solution of potassium ferricyanide–K3[Fe(CN)6] does not dissolve gold, an aqueous solution of potassium ferrocyanide–K4[Fe(CN)6] irradiated with ambient light is able to completely dissolve a gold electrode within several minutes. Photo activation and dissolution kinetics were assessed at different initial pH values, light irradiation intensities and ferrocyanide concentrations. Addition of small amounts of the heavy metal thallium (260 ppb) also provides tunability of the dissolution kinetics. An investigation of the involved chemical and physical processes of photochemistry, cyanide diffusion and surface reaction results in an understanding of the rate limiting steps and yields an overall transformation of irradiated light energy to dissolved gold of 2.6%. A potential application of this novel gold dissolution method as a cumulative light sensor is demonstrated and discussed.

Water-Borne Perovskite Quantum Dot-Loaded, Polystyrene Latex Ink.

Highly lipophilic nanocrystals (NCs) of cesium lead halides were successfully embedded in polystyrene (PS) particles by deliberately controlling the swelling of the PS particles in the mixtures of good and bad organic solvents. The resulting composite particles were readily transferred into water via simple stepwise solvent exchange, which yielded water-borne perovskite NC-based inks with outstanding structural and chemical stability in aqueous media. Minimal change in the photoluminescence (PL) of the NCs loaded in the PS particles was visible after 1 month of incubation of the composite particles in water in a broad pH range from 1 to 14, which could otherwise be hardly realized. Loading into the PS particles also made the NCs highly stable against polar organic solvents, such as ethanol, intense light irradiation, and heat. The NC PL intensity slightly changed after the composite particles were heated at 75°C and under irradiation of strong blue light (@365 nm) for 1 h. Furthermore, the PS matrices could effectively inhibit the exchange of halide anions between two differently sized perovskite NCs loaded therein, thereby offering a considerable technical advantage in the application of multiple perovskite NCs for multicolor display in the future.

A Translucency Measurement for Translucent Objects by Stripe Pattern Projection

This paper describes about a translucency measurement for translucent objects. The translucent objects in this paper are the object which translucency changes with deterioration of freshness like a squid mantle. The translucency measurements by the conventional method are affected by the thickness of the sample. We propose a new method that can solve this problem in this paper. In our method, we project a stripe pattern to the translucent object and quantify the translucency from its brightness of irradiated part and shielded part. The translucency measurement by our method has the merits that can reduce influence of changing of sample thickness and influence of fluctuation of irradiation light intensity. We tried a translucency measurement of translucent white resin samples. We made 12 kinds of plastic samples whose translucency and thickness were different, then measured those translucency by our method. Experimental results showed that we could measure translucency with reducing of the dependence of the thickness of sample and the intensity of irradiation light.

Efficient assembly of high-performance reduced graphene oxide/silver nanowire transparent conductive film based on in situ light-induced reduction technology

Silver nanowires (AgNWs) show great potential in the fabrication of high-flexible transparent conductive films (TCFs) and reduced graphene oxide (rGO) has been considered as one of the most promising overcoating materials for improving the long-term stability of AgNW TCFs. However, transmittance, conductivity, and flexibility of AgNW TCFs are often compromised during the assembly of rGO film. Herein, a highly efficient process of preparing a high-performance and highly stable AgNW TCF is proposed. Firstly, a water-based, self-assembled coating method is used to achieve GO/AgNW TCFs. Then, the light absorption property of AgNWs is utilized to assist the reduction of the graphene oxide (GO) layer through the use of a microsecond intense pulsed light (IPL) irradiation treatment, resulting in a high-performance rGO/AgNW TCF. The instantaneous high-temperature rising from AgNWs provides additional and abundant thermal energy during the irradiation to reduce the ultra-thin GO film without damage to the nanostructure of the GO layer or to the AgNW TCFs itself. The achieved rGO/AgNW TCFs have a low sheet resistance to 8 Ω/sq and a high transmittance of 86.2% owing to the in-situ reduction of rGO film from thin GO film and welding between the AgNWs. In addition, this technique presents a robust enhancement of AgNW TCFs, not only with regard to their electrical stability in high-temperature and high-humidity atmospheres but also to their overall mechanical stability, which significantly enhances the application prospects of AgNW TCFs for use in flexible optoelectronic devices.

Perylene as a visible light photoredox catalyst for photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of MMA

The organic photocatalyst, perylene, was used to mediate photoinduced electron transfer (PET) reversible addition-fragmentation chain transfer polymerization (RAFT) of methyl methhacrylate (MMA) under light irradiation in N,N-dimethylformamide (DMF) at 25°C with 4-cyanopentanoic acid dithiobenzoate (CPADB) as chain transfer agent (CTA). Kinetic studies confirmed that the polymerization obeyed the first order kinetic m'odel. The production of PMMAs with a good control of molecular weights (Mn,GPC) and narrow polymer molecular weight distribution (Mw/Mn) were obtained. It is found that well-controlled PET RAFT polymerization of MMA can be manipulated even with the amount of perylene decreasing to ppm level. No polymer was obtained in the absence of light irradiation, implying that the model of PET RAFT polymerization of MMA is an ideal light “on”-“off” switchable system. Furthermore, the speed of PET RAFT polymerization of MMA was also finely tunable by the external light irradiation intensity. The resultant PMMA macro-CTA was characterized by 1H nuclear magnetic resonance spectrum (1H NMR) and gel permeation chromatography (GPC). The accessibility of the high end group fidelity was further demonstrated by chain extension experiments.

Heater-Assisted Intense Pulsed Light Irradiation for Lanthanum Strontium Cobaltite Thin Film Electrode Fabrication

The wet chemical processes show many benefits over vacuum processes on account of their simplicity, versatility, and low cost. The films prepared via this method are advantageous for industrial applications. But inevitably, these processes require post-treatment for sintering and conventional method like furnace is still costly in terms of time and energy. Intense pulsed light irradiation is an innovative approach to proceed the post heat-treatment rather than using furnace which spend much time for process. By employing Xenon arc lamp that be used to cover the spectral range from about 400nm up to 950nm (1), white flash light can be irradiated and sinter the specimen in a moment. In this study, we employed metal organic decomposition method for lanthanum strontium cobaltite (LSCO) film coating and introduce two steps of irradiation process for effective sintering (2); pre-heating step to get rid of remnant organics and main-heating step for further sintering process. Pre-heating is long and weak step that gradually increases the temperature while main-heating is short and strong step that instantly increases. But in case of main-heating, there are some potential risks with process. During main-step process, substrates could be exposed to high flash light energy and could eventually be shattered by thermal shock. For this reason, we had tried to relieve the shock by reducing the input power of intense pulsed light irradiation. Considering that photo-thermal effect is the one of the factor of white flash light sintering process, the shortage of energy for sintering process was filled by employing heat energy supplied by bottom heater. Varying the bottom temperature to RT, 200oC and 300oC, the input energy required for optimized LSCO film was obviously decreased with temperature. Diffraction pattern obtained by XRD also confirms the effect of bottom heat by indicating perovskite peak only for 200oC and 300oC, while flash light irradiated sample at room temperature shows nothing on account of energy shortage. In addition, unlike irradiated sample at room temperature, FE-SEM images of heat-assisted intense pulsed light LSCO show porous surface morphology, which is suitable for cathode of solid oxide fuel cells (SOFCs). Here, electrolyte supported solid oxide fuel cell was fabricated by heat-assisted intense pulsed light irradiation method. Thermal shock to electrolyte was slacken off, and porous cathode could be obtained with this method. Electrolyte substrate could hardly not withstand high irradiation energy under room temperature. Fabricated solid oxide fuel cell shows reasonable performance under low temperature regime. The significance of this work is the feasibility of heater-assisted intense pulsed light irradiation method. These result shows the possibility to expand the applicable targets which are deposited on thermal shock vulnerable substrate. References H.-J. Hwang, W.-H. Chung and H.-S. Kim, Nanotechnology, 23, 485205 (2012). E.-B. Jeon, S.-J. Joo, H. Ahn and H.-S. Kim, Thin Solid Films, 603, 382 (2016).