High Luminous Intensity Research Articles

Enhanced stability of CsPbBr3 nanocrystals through Al2O3 and polymer coating.

Lead halide perovskite nanocrystals have emerged as a promising candidate for next-generation display applications due to their attractive optical properties and low-cost production. However, the environmental stability of perovskite remains a major challenge, hindering their practical applications and scalability for commercialization. In this study, we present an effective method to enhance the stability of CsPbBr3 nanocrystals by coating them with a combination of Al2O3 and a polymer. The unique double protection structure significantly improves their resistance to moisture, heat, and polar solvents. It is worth noting that compared with the ordinary CsPbBr3 nanocrystals, the modified nanocrystals have better stability and higher luminous intensity. After soaking in water for 360 hours, the modified nanocrystals retained 85% of their initial luminous intensity. Under optimal conditions, the luminous intensity of modified nanocrystals increased by 36%. Furthermore, the thermal stability and organic solvent resistance of the nanocrystals are improved compared with the nanocrystals uncoated with Al2O3. The synthesized white light emitting diode using the modified PNCs achieves a color gamut coverage rate of 129% under standard NTSC, and 95% under standard Rec.2020, indicating its potential for future display applications. This research presents a promising approach for the development of stable perovskite nanocrystals with enhanced performance in various optoelectronic devices.

Augmentation of the photoluminescence intensity via the incorporation of Eu3+ ions into single-phase Ba2La4Zn2O10 nanocrystalline material for advanced photonic applications

Strong red-emission is observed in the new Eu3+ activated Ba2La4Zn2O10 nanocrystalline material series fabricated via solution combustion methodology. A tetragonal crystal framework withspace group I4/mcm (140) having irregularly shaped grains with sizes between 33 and 62 nm is formed. Morphological aspects are examined via scanning and transmission electron microscopy (SEM and TEM). On near-UV excitation, the photoluminescence spectrum presents a fair red emission at 16129 cm−1 wavenumbers consistent with the electronic transition 5D0→7F2. The energy transfer phenomena are also discussed. The highest luminous intensity is observed for 5.0 mol% of Eu3+ composition with 394 nm excitation. d-d exchanges authorized the presence of the concentration quenching phenomenon. Diffuse reflectance spectroscopy was taken into use to explore the energy band gap which lies in the semiconductor domain. The CIE coordinates lay in the reddish zone of the chromaticity plot, thus confirming their latent contention in pc-WLEDs and other advanced photonic applications.

Photoelectrochemical passivation of undoped n-InP by ultra-thin polyphosphazene film: Towards a perfect photoanode?

For the first time, the photoanodic behavior of undoped n-InP (≈ 1015 atoms.cm−3) is studied in liquid ammonia at low temperature (-55 °C) under atmospheric pressure. Under illumination, the low doping level provides unique conditions to monitor charge transfer at the interface since only photo-generated holes are involved in the passivation mechanism. Specific photoanodic transient phenomena are observed due to the photo-holes availability at the interface which depends on light intensity. Cycle voltammograms differ strongly from the initial ones in the dark. Photo-electrochemical transformations of InP responses are followed by cycle voltammetry for two conditions of illumination; under low and high luminous flux intensity. In spite of a pure photo-holes process for both cases, voltammograms are highly dependent on light intensity while impedance measurements present the same strong modifications. One-volt positive shift of the flat band potential is indeed observed. However, whatever is the luminous flux intensity, a low photo-anodic charge is consumed (≈ 1 mC.cm−2) and the same ultra-thin film of polyphosphazene onto n-InP is shown by XPS analyses. Properties of this new interface is discussed in term of energy diagram and photo-holes transfer ability. Under these experimental conditions used, (J ≤ 100 µA.cm−2 and Q ≈ 50 mC.cm−2), the passivated interface behaves as a photoanode toward ammonia oxidation since the ultra-thin film is maintained onto InP.

Optimizing the luminescent performance and water resistance of K2SiF6:Mn4+ phosphor by doping Li+ and coating BaSO4

Mn4+ activated K2SiF6 red phosphors have attracted widespread attention, while the poor moisture resistance restrains their further applications. In order to optimize the luminescence intensity of the K2SiF6:Mn4+ red phosphors immersed in water, we synthesized K2SiF6:Mn4+, Li + red phosphors with LiF as lithium source. The luminous intensity of K2SiF6:Mn4+, Li+ phosphor is approximately 133% of K2SiF6:Mn4+ red phosphors. By coating BaSO4 layer on the surface of K2SiF6:Mn4+, Li+ samples, the luminous intensity of K2SiF6:Mn4+, Li+@BaSO4 red phosphor maintains 83% of the initial intensity after soaking in water for 6 h. In addition, the K2SiF6:Mn4+, Li+@0.8 BaSO4 red phosphor has higher luminous intensity at 150 °C. Finally, by combining with InGaN blue chip and yellow phosphor (YAG:Ce3+) to fabricate warm white LED devices, the warm white LED device based on K2SiF6:Mn4+, Li+@0.8 BaSO4 red phosphor has excellent performance (CCT = 3558 K, CRI = 91.4).

Luminous behavior and tensile property of twisted side-emitting polymer optical fibers bundles

Side-emitting polymer optical fibers (SEPOFs) are known for providing a strong bright luminosity and have been applied in textile industry. Commonly, available SEPOFs with diameters of 2–3 mm provides higher luminous intensity when combined with textiles, while higher bending stiffness increases difficulty for incorporation with textiles. The SEPOFs with smaller diameters are characterized as more flexible and more suitable for textiles, while their poor mechanical properties limit final applications. The twisting can keep the structure bundles of SEPOFs stable. In this work, SEPOFs with diameter of 0.25 mm were used and different numbers (15, 20, and 25) of SEPOFs were assembled into one bundle by applying different twists (10T/m, 20T/m, and 30T/m). The twisting structure, tensile behavior and side-illumination property of the twisted SEPOFs bundles were investigated. As a result, the stable structure of the twisted SEPOFs bundles was found, and the twisting angles increased with higher twisting degree. The yield strength and strain of twisted SEPOF bundles were about 80–84 MPa and 10–12%, respectively. The initial modulus tended to decrease with a higher twisting degree, but it was still higher than 1.2 GPa. The break of the twisted SEPOFs bundles followed the ‘optimal twist’ theory, which suggested optimal twisting degree for different samples. Besides, the attenuation of side illumination intensity of twisted SEPOFs bundles was found, and the twisting structure had a complicated influence on the side illumination intensity. We suggest that this work will help to promote the use of SEPOF-based bundles and extend to textile applications.

Current State and Prospects for Development of Head Lighting for Vehicles. Part 1. Standardization and Generally Used Vehicle Headlamp Designs

The main task of head lighting (headlights) of vehicles is to illuminate the road in front of it to ensure road safety. The design principles of vehicle headlights have remained unchanged for 50–60 years, but modern vehicles themselves differsignificantly from their counterparts half a century ago. Modern cars are faster, have lower overall height and weight, which makes it difficult for drivers to ensure road safety at night: the driver needs to see farther in order to respond in time to changing traffic conditions, which is an indirect reason for the increase in headlight intensity. Due to the low landing, drivers are much more likely to be blinded by the headlights of passing and oncoming vehicles, which leads to traffic accidents. The distribution of the luminous intensity of headlights of vehicles (especially dipped beam headlights) has a sharp cut-off line, however, due to the high luminous intensity of the headlights and their low placement, even diffused light can cause blinding. Therefore, the requirements for the sharpness of the cut-off line of the standard headlight distribution are becoming more stringent all the time. To meet these requirements, modern headlight manufacturers use different approaches (the use of projection systems,LED matrices, etc.), but due to the lack of generally accepted efficiency criteria and the strong differences in vehicle design, the structures turn out to be too heavy, have low reliability and service life, and inefficient in using the energy of light source. This paper provides a brief overview of the most frequently used headlight designs and how to generate a standard European continental headlight distribution. Based on the review, the main problems of widely used head lighting designs are identified and the task is set to formulate requirements and recommendations for the design of promising types of head lighting for vehicles.

Synthesis and Luminescence Characteristics of CaWO4: Eu3+ Red Phosphor for White Light Emitting Diode

White light emitting diode (LED) red phosphor Ca1−xWO4:xEu3+ (x = 0.10, 0.15, 0.20, 0.25, 0.30) was prepared by high temperature solid state method. The phase of the phosphor sample was analyzed by X-ray diffraction (XRD) and the morphological characteristics of the sample were analyzed by scanning electron microscope (SEM), and the luminescence characteristics of the sample were studied by fluorescence spectrophotometer. The results show that the synthesized samples are scheelite structure and can be effectively excited by near ultraviolet light (393 nm) and blue light (464 nm). The main emission peak is located at 615 nm, which belongs to the 5D0→7F2 transition of Eu3+. The optimum doping amount of Ca1−xWO4:xEu3+ is 25%. In addition, Ca0.75WO4: Eu3+0.25 was prepared by sol–gel method, which was compared with the same component sample prepared by high-temperature solid-state method. It was found that the phosphor prepared by high-temperature solid-state method had relatively high luminous intensity.

Highly emissive green CsPbBr3/Cs4PbBr6 composites: formation kinetics, excellent heat, light, and polar solvent resistance, and flexible light-emitting application.

Benefit from their near-unity photoluminescence quantum yield (PL QY), narrow emission band, and widely tunable bandgap, metal halide perovskites have shown promising in light-emitting applications. Despite such promise, how to facile, environmentally-friendly, and large-scale prepare solid metal halide perovskite with high emission and stability remains a challenging. Herein, we demonstrate a convenient and environmentally-friendly method for the mass synthesis of solid CsPbBr3/Cs4PbBr6 composites using high-power ultrasonication. Adjusting key experimental parameters, bright emitting CsPbBr3/Cs4PbBr6 solids with a maximum PL QY of 71% were obtained within 30 min. XRD, SEM, TEM, Abs/PL, XPS, and lifetime characterizations provide solid evidence for forming CsPbBr3/Cs4PbBr6 composites. Taking advantage of these composites, the photostability, thermostability, and polar solvent stability of CsPbBr3/Cs4PbBr6 are much improved compared to CsPbBr3. We further demonstrated CsPbBr3/Cs4PbBr6 use in flexible/stretchable film and high-power WLEDs. After being subjected to bending, folding, and twisting, the film retains its bright emission and exhibits good resistance to mechanical deformation. Additionally, our WLEDs display a superior, durable high-power-driving capability, operating currents up to 300 mA and maintaining high luminous intensity for 50 hours. Such highly emissive and stable metal halide perovskites make them promising for solid-state lighting, lasing, and flexible/stretchable display device applications.

Redox post-translational modifications and their interplay in plant abiotic stress tolerance.

The impact of climate change entails a progressive and inexorable modification of the Earth's climate and events such as salinity, drought, extreme temperatures, high luminous intensity and ultraviolet radiation tend to be more numerous and prolonged in time. Plants face their exposure to these abiotic stresses or their combination through multiple physiological, metabolic and molecular mechanisms, to achieve the long-awaited acclimatization to these extreme conditions, and to thereby increase their survival rate. In recent decades, the increase in the intensity and duration of these climatological events have intensified research into the mechanisms behind plant tolerance to them, with great advances in this field. Among these mechanisms, the overproduction of molecular reactive species stands out, mainly reactive oxygen, nitrogen and sulfur species. These molecules have a dual activity, as they participate in signaling processes under physiological conditions, but, under stress conditions, their production increases, interacting with each other and modifying and-or damaging the main cellular components: lipids, carbohydrates, nucleic acids and proteins. The latter have amino acids in their sequence that are susceptible to post-translational modifications, both reversible and irreversible, through the different reactive species generated by abiotic stresses (redox-based PTMs). Some research suggests that this process does not occur randomly, but that the modification of critical residues in enzymes modulates their biological activity, being able to enhance or inhibit complete metabolic pathways in the process of acclimatization and tolerance to the exposure to the different abiotic stresses. Given the importance of these PTMs-based regulation mechanisms in the acclimatization processes of plants, the present review gathers the knowledge generated in recent years on this subject, delving into the PTMs of the redox-regulated enzymes of plant metabolism, and those that participate in the main stress-related pathways, such as oxidative metabolism, primary metabolism, cell signaling events, and photosynthetic metabolism. The aim is to unify the existing information thus far obtained to shed light on possible fields of future research in the search for the resilience of plants to climate change.

P‐15.1: Large Area and Low Cost Fingerprint on Display Technology

We developed a large area and low cost optical fingerprint recognition product based on LTPS (low temperature poly silicon) process. A high efficient a‐Si pin sensor is introduced, the quantum efficiency under white light is 70% and the dark state current density is E‐10 A / mm2. The “one‐to‐one” and “one to multiple” structures of sensor and micro lens are compared, and the “one‐to‐one” optical path structure is systematically analyzed and evaluated. The optical path focal length is about 100 μm. The fingerprint recognition effect is significantly improved by adding a BM shading layer, and this scheme can effectively avoid the screen burning problem caused by the high luminous intensity of pixels in the fingerprint unlocking area.

Liquid Diffused Separation Induced Crystallization to efficiently grow centimeter-sized diamond-like Cs4PbBr6 crystals for light-emitting applications

Large-size single crystal (SCs) is an excellent platform for studying the optoelectronic properties of materials. However, growing high-quality crystals has always been a challenge. Here we develop a liquid-induced diffusion (LDSC) method for high-efficiency and low-cost growth of centimeter-sized Cs4PbBr6 crystals. All-sized crystals with a special diamond-like appearance exhibit strong green photoluminescence (PL) and good stability. In addition, X-ray diffraction (XRD) reveals that the diamond-like Cs4PbBr6 crystal exhibits a different crystal surface orientation from the rhombic SCs. More importantly, different from the CsPbBr3 impurity-induced photoluminescence mechanism, the strong green PL of the as-prepared diamond-like Cs4PbBr6 crystal originates from its defect state: Br vacancies (VBr). Furthermore, high-efficiency white light-emitting diodes (WLED) devices are prepared by using high-luminous intensity Cs4PbBr6 crystals as green light emitters. The optimized devices generate high-quality white light with luminous efficiency of ∼54 lm W−1, which is much better than that of conventional perovskite nanocrystals-based LED devices. Our work demonstrates that the Cs4PbBr6 crystal devices possess higher luminous efficiency, better stability and great application potential in display backlighting.

Effect of Ingredients Ratio on the Friction Sensitivity and Burning Performances of Mg/Ba(NO3)2/Novolac Resin Pyrotechnic Compositions

AbstractEach pyrotechnic composition has specific sensitivity such as electrostatic discharge (ESD) sensitivity and friction sensitivity (FS), and it also has specific ignition performance, including luminous intensity (LI) and burning rate (BR). These parameters depend on the concentration of pyrotechnic composition ingredients. In this study, Mg/Ba(NO3)2/novolac resin compositions were prepared using different weight ratios (wt.%) of Mg, Ba(NO3)2, and novolac resin. Then, they were investigated by their FS, LI, and BR. The results showed that by increasing Ba(NO3)2 concentration from 33.76 to 84.54 wt.% Ba(NO3)2, the FS increases from 343 N to 65.5 N. However, the LI and BR of this composition increased by increasing Ba(NO3)2 concentration until a 3/1 stoichiometric ratio of Mg/Ba(NO3)2 (from 13086 to 20588 cd (candela) and 11.25 to 13.71 cm/s, respectively for 33.76 to 64.92 wt.% Ba(NO3)2) and decreased afterward (from 20488 to 53.24 cd and 13.71 to 6.45 cm/s, respectively). For Mg/Ba(NO3)2/novolac resin containing 3 to 12 wt.% novolac resin FS increased from 56 to above 360 N. LI and BR decreased from 20057 to 1203 cd and 17.3 to 1.2 cm/s, respectively. The stoichiometric ratio of Mg/Ba(NO3)2 has the highest enthalpy of reaction. Therefore, it can be concluded that it has the highest LI and BR.

Eu3+-Activated Alkali Rare-Earth Double-Tungstate Nanoparticles for Near-Ultraviolet-Light-Triggered Indoor Illumination

Phosphors for near-ultraviolet (NUV)-triggered white light-emitting diodes (LEDs) have become an attractive research topic in recent years. However, it is still difficult for phosphors to have simultaneous high luminous intensity, superior color purity, and excellent thermal stability. Hence, a series of Eu3+-activated alkali rare-earth double-tungstate nanoparticles with high luminescence intensity were prepared by a facile hydrothermal reaction method. The influence of rare-earth ions and alkali cations on the luminescence properties was investigated. Impressively, the prepared phosphors exhibit superior color purity and excellent thermal stability. Meanwhile, the emission intensity and color purity can be controlled by tuning the concentrations of Eu3+ ions. By employing the resultant nanoparticles, a fabricated LED device emitted bright warm white light with a high color rendering index (CRI) of 92.12 and a suitable correlated color temperature (CCT) of 4689 K. This work straightly confirms that the prepared phosphors are promising candidates as red-emitting components applied in NUV-triggered indoor illumination.

Enhancement of the luminescent thermal stability and water resistance of K2TiF6:Mn4+ by organic inorganic hybrid matrix and surface passivation

Due to their attractive luminescent properties, Mn4+-activated fluoride red-emitting phosphors are significant for improving correlated color temperature (CCT) and color rendering index (Ra) of white light-emitting diodes (WLEDs). However, the inherent poor moisture resistance of these phosphors limits their further application in WLEDs. Herein, KTF:TEAH+,Mn4+-P (KTF:TEAH+,Mn4+ = K2TiF6:0.10(C2H5)3NH+,0.04Mn4+, P = passivation with citric acid solution) red emitting phosphor with good water resistance, high luminous intensity and good luminescent thermal stability was generated by combining ion exchange and surface passivation method. The experimental results show that: (a) Emission intensities of samples are improved by using an organic-inorganic hybrid matrix and surface passivation; (b) Water resistances of samples are greatly increased by surface passivation; (c) Negative thermal quenching (NTQ) effect of the samples are enhanced by using an organic-inorganic hybrid matrix and surface passivation. The reason for improvement of water resistance is assigned to the formation of a Mn4+ -rare protective layer on the surface of the sample after surface passivation. Furthermore, the mechanism of the strong NTQ effect is attributed to the increase of electron traps by using an organic-inorganic hybrid matrix and surface passivation. A WLED prototype capable of emitting warm white light (luminous efficiency = 108.6 lm/W, CCT = 3725 K, Ra = 88.4) was assembled by coating a mixture of KTF:TEAH+,Mn4+-P, epoxy resin and YAG:Ce3+ on a blue InGaN chip. These excellent properties indicate that the KTF:TEAH+,Mn4+-P has important application value in blue-excited WLEDs.

All Silicon Microdisplay Fabricated Utilizing 0.18 μm CMOS-IC With Monolithic Integration

A low voltage all silicon microdisplay is presented based on MOS-like gate-control all-Silicon light-emitting diode (LED) in standard 0.18 μm complementary metal oxide semiconductor (CMOS) technology. The MOS-like LED is designed under a PN alternate structure with polysilicon gate control electrode for high luminous intensity and low operating voltage. The microdisplay device is fabricated based on the LED as pixel units. The size of the proposed microdisplay device is 6.2 mm × 5.0 mm with a about 368 mW/mm2 luminous intensity at the stable operating voltage of 1.8 V.

Photodynamic Therapy and Multi-Modality Imaging of Up-Conversion Nanomaterial Doped with AuNPs.

Two key concerns exist in contemporary cancer chemotherapy in clinic: limited therapeutic efficiency and substantial side effects in patients. In recent years, researchers have been investigating a revolutionary cancer treatment technique, and photodynamic therapy (PDT) has been proposed by many scholars. A drug for photodynamic cancer treatment was synthesized using the hydrothermal method, which has a high efficiency to release reactive oxygen species (ROS). It may also be utilized as a clear multi-modality bioimaging platform for photoacoustic imaging (PAI) due to its photothermal effect, computed tomography (CT), and magnetic resonance imaging (MRI). When compared to single-modality imaging, multi-modality imaging delivers far more thorough and precise details for cancer diagnosis. Furthermore, Au-doped up-conversion nanoparticles (UCNPs) have an exceptionally high luminous intensity. The Au-doped UCNPs, in particular, are non-toxic to tissues without laser at an 808 nm wavelength, endowing the as-prepared medications with outstanding therapeutic efficacy but exceptionally low side effects. These findings may encourage fresh effective imaging-guided approaches to meet the goal of photodynamic cancer therapy to be created.

Design of Robust Guaranteed Margin Stability Region PI Controller for Automotive LED Lighting With Parameter Uncertainty

In the modern era, automotive light emitting diode (LED) lighting technologies are booming as a result of high luminous intensity, long life, compact size, high energy efficiency, high reliability etc. As the load is sensitive for input parametric variations, it is essential to regulate the load voltage and current with respect to system specifications. Hence, there is a need for fast response robust controller to feed the required voltage and current during abnormal conditions. In this paper, a robust controller is designed for single switch control buck boost converter for automotive LED lighting. A small signal modelling of the converter is developed with perturbed state variables to analyze the dynamic behavior of the system. The system with dynamic controller has a zero in the right-hand side of the s-plane, which results in poor closed loop stability. Hence, a robust controller is designed with Kharitonov’s theorem by considering the uncertain variations in the converter parameters. A robust performance region is obtained by considering guaranteed gain margin and phase margin benchmark. In this region, the optimal PI controller gain values are obtained using Kharitonov’s sixteen plants theorem. The obtained gain values make the system with minimum oscillation, fast settling time, right hand side zero compensation and stability of the system. The performance analysis is compared with the conventional PI controller and to ensure the peak value of sensitivity for robust controller. The simulation of the system is performed in PSIM and validated in real time using dSPACE1103 controller with experimental results.

Simultaneous Synthesis, Modification, and DFT Calculation of Three‐Color Lead Halide Perovskite Phosphors for Improving Stability and Luminous Efficiency of WLEDs

AbstractThe all‐inorganic metal halide perovskite CsPbX3 (X = Cl, Br, and I) has received extensive attention in the field of white light‐emitting diodes (WLEDs) due to its high luminous intensity and high color purity. However, the shortcoming of poor stability directly affects the luminous performance of the WLED devices and reduces their luminous efficiency, which has become an urgent problem to be solved. Here, three‐color lead halide perovskite phosphors (blue‐emitting CsPbBr3 synthesized at 20 °C (CPB‐20), green‐emitting CsPbBr3‐80 (CPB‐80)/CsPbBr3:SCN−(CPB:SCN−), and red‐emitting PEA2PbBr4 (PPB)/PEA2PbBr4:Mn2+ (PPB:Mn2+)) with higher stability and luminous intensity are simultaneously prepared and applied in WLEDs. Density functional theory is used to optimize the structures of CsPbBr3 and PEA2PbBr4, and to calculate the work function, optical properties, and charge density difference. Not only the WLED devices with three‐color lead halide perovskite phosphors are constructed, but also WLED devices from warm white to cold white are realized by tuning the ratio of the different emissions, and a superior color quality (color rendering index of 96) and ideal correlated color temperature (CCT of 9376 K) are achieved. This work will set the stage for exploring low‐cost, environmentally friendly, high‐performance WLEDs.

Effect of BaO on the structure and luminescence properties of Eu3+doped GSRG glass

Eu3+ doped GeO2-SiO2-RO (R=Mg, Ca, Ba)-Ga2O3 (GSRG) glass was prepared by high temperature melting method. Through XRD, absorption spectrum, fluorescence spectrum, fluorescence lifetime, infrared spectrum and other test methods, the influence of BaO on the structure and luminescence properties of Eu3+ doped GSRG glass was studied. The results show that BaO in RO (R=Mg, Ca, Ba) can make Eu3+ doped GSRG glass have higher luminous intensity. As BaO gradually replaces MgO, the luminous intensity of glass first increases and then decreases with the increase of BaO concentration. The luminous intensity reaches its peak when the BaO concentration reaches 25 mol%. Meanwhile, the transition from germanium-oxygen tetrahedron [GeO4] to germanium-oxygen octahedron [GeO6] appeared in the glass structure, again by [GeO6] shift back to [GeO4]. The CIE chromaticity coordinates show that the color temperature of prepared glass is 1700–1800 K, and the color purity is above 98%.

Construction of a Novel Barium‐Free Green‐Light Emitting Illuminant Based on Boron Carbide

AbstractGreen‐light emitting illuminant and green pearls that are currently being used for pyrotechnics are mainly composed of barium carbonate and polyvinyl chloride (PVC), which lead inevitably to the substantial generation of abundant harmful products for environmental pollution. There is thus considerable scope for the development of a novel emitting illuminant with an improved “green” composition instead of compositions incorporating barium based oxidants and polyvinyl chloride for environmental protection. For this purpose, a new composition composed of boron carbide, potassium perchlorate, and guanidine nitrate with a suitable burning rate of 5∼15 mm/s required for fireworks, the high luminous intensity of 34665 Cd and spectral purity of 67.1 % at a primary wavelength of 562 nm was developed. Notably, PM10 data demonstrated that the new composition generated less than half the amount of the smoke relative to the original one. More importantly, all of the safety parameters of this new formulation meet well with the standards’ requirements, i. e., a remarkable low sensitivity to friction (0 %) and impact (8 %), relative stability to electric discharge (374.4 mJ), flame (14.0 cm) and heating (unburned, unexploded at 75 °C for 48 h), as well as a high ignition temperature of 504.0 °C and a low moisture absorption rate (0.66 %). Taken together, the new emitting illuminant developed herein showed great potential to be used for fireworks and signal flare in both military and civilian applications.