Polymer Interlayer Research Articles

Numerical and experimental blast response of multilayer laminated glass panels

Laminated glass is used in high-security buildings to mitigate the effects of blasts and ballistic loadings. The multi-layered composition of the laminated glass (LG) panels allows the glass panes to crack and undergo large deflections while preventing glass shards from spalling by mostly remaining attached to the polymeric interlayer. To characterize multilayer LG panels under blast loading, it is essential to develop their static resistance response under uniform loading. A full-scale water chamber was used to experimentally evaluate the quasistatic response to the failure of the multilayer LG panel systems under uniform pressure. The influence of different polymeric interlayer types on the response of multilayer LG panels was studied. Also, the glass breakage patterns and deflections exhibited by various multilayer glass configurations were investigated. The response of LG panels under blast was developed using ANSYS AUTODYN, which was verified using field experiments. LG panels with an Ethylene Vinyl Acetate (EVA) polymeric interlayer experienced the most dynamic deflections, whereas LG panels with an ionoplast SentryGlas® (SG) polymeric interlayer displayed the least dynamic deflections. The results indicated that multilayer LG systems provide higher blast resistance compared to double-layer systems; the additional layers can help reduce glass breakage and maintain structural integrity. Multilayer LG system’s SG interlayer enhanced blast protection by allowing load transfer and ensuring uniform load distribution between glass layers.

Design of a 10.8 to 34.6 GHz Ultra‐Wideband Transparent Metamaterial Absorber Using an Equivalent Circuit Model

AbstractIn this paper, an ultra‐wideband metamaterial absorber (UWMA) is proposed and demonstrated by using a transparent and flexible sandwich structure, which consists of a top patterned double‐square loop (DSL) of conductive film, the polymer interlayer, the bottom conductive film. The work presents the UWMA's equivalent circuit model for a macroscopic analysis of its physical mechanism. Further, optimizing UWMA's structural parameters using this equivalent circuit model can greatly enhance its efficiency. The absorption coefficient of the designed structure achieves over 90% within the wide frequency range from 10.82 to 34.59 GHz due to the overlapping of three absorption bands. The experimental results indicate that the absorption coefficient of the fabricated structure exceeds 60% in the frequency range of 10.45–35.28 GHz, and reaches 90% in the majority of frequency range of 10.71–28.51 GHz, while its averaged optical transparency in the visible spectrum exceeds 75%. The UWMA achieves high transparency due to a small ratio of the surface area occupied by the ITO pattern to the total area and realizes multiple‐resonance ultra‐wideband absorption with conformality while maintaining a thickness of only 2.2 mm, which has diverse applications in the field of electromagnetics, including aircraft stealth, transparent chambers, and flexible electronic screens.

Environmental Bond Degradation of Different Laminated Glass Panels.

Since buildings are designed to endure over time, it is crucial to comprehend how laminated glass (LG) windows, and consequently, the polymer interlayer materials, respond to weathering. This paper explores the impact of accelerated humidity on the mechanical properties of several polymer interlayer materials and LG sections. The study specifically focuses on three polymer interlayer materials of industrial interest: polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA), and ionomer (SG). To examine the environmental effects, testing setups were devised to subject the polymeric materials and LG panels to specific conditions. Uniaxial tension coupons and LG disks were submerged in a water bath to simulate the environmental effect. A dedicated testing fixture was designed and manufactured for the LG disks. The results showed that the properties of EVA, including strength, maximum strain, and toughness, were not significantly affected by the environmental conditions. However, the properties of SG5000 were notably impacted, with a significant reduction in its bond strength due to water immersion.

Electric and dielectric responses of Au/n-Si structure by Mn doped PVC interfacial layers

This paper has investigated and compared the impact of polyvinyl chloride (PVC) without/with manganese (Mn) metallic nanoparticles interfacial layer on the electric and impedance characteristics of Schottky diode (SD) with a structure of Au/n-Si (MS). The structures of these two metal-polymer-semiconductor (MPS) SDs are Au/PVC/n-Si and Au/PVC:Mn/n-Si. A detailed description of the SDs manufacturing process is given. The x-ray diffraction (XRD) analysis, Scanning Electron Microscope (FE-SEM) images, and Electron Dispersive x-ray (EDX) spectroscopy are three methods that have been utilized to examine mean size of crystallite, morphology of surface, purity specification. The fundamental electronic variables of these devices are ascertained and contrasted with one another using the I-V characteristic measurement at ±6 V. Ohm’s law, Thermionic Emission (TE) theory, modified Norde, and Cheung functions are used to calculate the SDs’ leakage current (I0), ideality coefficient (n), potential barrier height (BH), shunt (Rsh), and series (Rs) resistances. Investigations are conducted on the energy dependence of surface states density (Nss) and the current conduction mechanisms (CCMs) for both reverse and forward biases. These interfacial layers are known to decrease the n, Rs, and Nss. The PVC polymer interlayer leads to improve the efficiency of the MS-type SD, but it does not when doped by Mn nanoparticles. Additionally, by measuring impedance at a bias of 1.5 V and 100 Hz-1 MHz frequency range, the frequency dependence of dielectric properties of the prepared SDs is studied. The dielectric permittivity, dielectric loss tangent, electronic modulus, and ac electronic conductivity of these SDs are all studied.

Bond behaviour of CFRP-to-concrete bonded joints with a GFRP interlayer: An experimental study

This paper presents an experimental investigation into the improvement of efficiency in carbon fibre reinforced polymer (CFRP)-to-concrete bonded joints by an introduction of a glass fibre reinforced polymer (GFRP) interlayer. By introducing a ±45° biaxial GFRP interlayer between the CFRP and concrete, applied force on the CFRP laminate was distributed over a larger area of concrete surface, thereby increasing the load carrying capacity of the bonded joint. A total of 18 single-shear pull test specimens were prepared and tested to investigate the effect of CFRP width (varying from 25 mm to 50 mm) and GFRP/CFRP width ratio (ranging from 2 to 4) on the behaviour of the CFRP-to-concrete bonded joints with a GFRP interlayer. Addition of the GFRP interlayer was found to increase both ultimate load capacity and the deformation capacity significantly. Increase in the GFRP interlayer width, while keeping the CFRP width the same, increased the ultimate load of the bonded joint. Increasing the GFRP width while keeping the GFRP/CFRP width ratio the same also increased the ultimate load of the bonded joint but had little effect on the bond strength. An idealized mechanism was presented to explain the behaviour of the CFRP-to-concrete bonded joints with a GFRP interlayer. It was shown that due to 2D stress transfer of the newly proposed bonded joints, underlying mechanisms may be different to the conventional FRP-to-concrete bonded joints. Therefore, design theories developed for conventional FRP-to-concrete bonded joints may not be directly applicable to the CFRP-to-concrete bonded joints with a GFRP interlayer. Much more investigations are necessary to better understand the behaviour of the newly proposed bonded joints.

Experimental and computational study on strain localization of laminated glass polymeric interlayer materials

Recent explosions have prompted researchers to investigate the vulnerability of civil structures, leading to an increased demand for blast-resistant buildings. Laminated glass (LG) panels in glazed facades boost resilience, yet understanding glass fragment interaction with interlayers remains incomplete. This paper presents an integrated experimental-computational study on strain localization in LG polymeric interlayers to accurately simulate their response, addressing this gap. Uniaxial tensile tests were performed on the polymeric interlayer materials polyvinyl butyral (PVB) and SentryGlas® (SG), commonly used in the design of LG in blast-resistant glazing systems. Digital image correlation was used to characterize strain localization within the material. The experimental results were used to calibrate material model parameters to be used in the modeling of LG systems. A three-network viscoplastic (TNV) material model for SG interlayer was calibrated using PolymerFEM software. Yeoh hyperelastic material model parameters were calibrated for the quasistatic response of PVB. A finite element computational model was developed using Ansys LS-DYNA software and validated with experimental data. The study results showcase finite element modeling's ability to accurately predict both the hyperelastic response of PVB and the post-peak large strain behavior of SG interlayer materials by 8% and 3.6%, respectively.

Design, fabrication, and physical properties analysis of laminated Low-E coated glass for retrofit window solutions

The ever-growing demand for improved energy efficiency in buildings has stimulated a stream of research focused on innovative retrofit energy solutions. Laminated low emissivity (Low-E) type coated glass components can be used in retrofitting window systems for enhancing energy savings provided by the insulating properties of glass laminates containing these heat-mirror-type coatings. In particular, custom-designed double-silver low-E coatings embedded into the laminate structure (directly facing the polymer interlayers during and after the lamination) are of interest due to being protected from environmental exposure, enabling easy component transportation, storage, and window retrofits. In this study, we provide some details on the design of several reflector-type solar control low-E coatings of high environmental stability and demonstrate the feasibility of their fabrication on 3 mm thick glass substrates, followed by the lamination. We describe the optical properties of laminated structural glass components of potential usefulness for retrofitting window applications in new and existing buildings. Several thin-film coatings of a low-E type are deposited by using the RF magnetron sputtering technique and then subjected to lamination by using transparent epoxy and PVB materials, to be protected by a clear glass cover layer. The optical performance characteristics of these coatings (measured before and after lamination) elucidate the effects these lamination materials and cover glass thickness have on the final optical properties (leading to a slight reduction in the optical transmission in the visible spectral range, by around 8–10 % while retaining low thermal emissivity across the infrared spectral range). The outcomes of this research, if industrialized could contribute significantly to the development of sustainable building components and practices, and to acheiving a reduction in building energy consumption by way of enabling window retrofit operations at potentially reduced costs.

Viscoelastic Fractional Model with a Non-Uniform Time Discretization for Laminated Glass: Experimental Validation

We discuss a novel approach, based on fractional calculus with a non-uniform time discretization, to numerically simulate interlayer viscoelastic behaviour and associated time-dependent deformation of laminated glass. Reference is made to the classic example of a simply supported laminated glass beam under long-duration loads. The fractional model is compared with some results obtained using the widely used finite element software ABAQUS 2021, which for the viscoelastic properties of the polymeric interlayer, utilizes the more traditional approach based on the Wiechert model and approximation via Prony series of the relaxation function and a uniform discretization of time for the numerical solution. The model is also validated through the comparison with experimental test. The novel approach based on fractional calculus presents two main advantages: 1) the definition of the model parameters from experimental data is simplified; and 2) the numerical implementation is easier and computationally more efficient. When a long observation time is considered, the use of a non-uniform time discretization presents the great advantage of not neglecting any part of the relaxation function. Use of traditional uniform time discretization requires the use of large time steps making it impossible to describe all the changes of the relaxation curve within the large time interval. Practical examples will be presented using viscoelastic models for Trosifol® Extra Stiff (PVB) and SentryGlas® interlayers. This methodology also shows potential to advance next generation standards for the design of structural laminated glass.

Wheatstone bridge sensor arrays in foil by robust μ-via technology combining femtosecond-laser drilling and pulsed electrodeposition

Flexible sensor arrays with multilevel circuits typically require complex production cycles leading to high costs and reliability issues. For establishing flexible arrays of strain sensors in Wheatstone bridge configurations structures on different levels within flexible films have to be connected by robust μ-via technology. Usually, dry etching is used to establish via-holes and direct current (DC) electrodeposition is used to fill them with copper. However, dry etching can lead to damages in the underlying electrode or incomplete removal of polymeric material, as inhomogeneities of polymeric foil thicknesses cannot completely be eliminated. This affects the quality of the plating and the reliability of the μ-via connections. It is aggravated by the fact that DC electroplated copper is often weakened by various defects, such as small voids. This article describes a reliable and less complex fabrication process for a Wheatstone bridge sandwich structure consisting of five polymer interlayers separating four metal layers. The femtosecond-laser μ-via drilling proved to be fast, material selective and therefore tolerant to inhomogeneities of polymeric foil thicknesses. Moreover, pulsed current (PC) electrodeposition significantly improved the quality of the copper filling. No voids were found using electron microscopy. Finally, the respiration monitoring sensors produced using this method were subjected to repetitive cycles of bending and relaxation. At a frequency of five cycles per second, reproducible cycles of signal changes were obtained, indicating the usefulness for detecting respiratory cycles of premature infants.

Tuning the Aggregated Structure of Polymer Interlayers for High-Performance Quantum Dot Solar Cells and Photodetectors

Tuning the Aggregated Structure of Polymer Interlayers for High-Performance Quantum Dot Solar Cells and Photodetectors

Viscoelastic modeling via fractional calculus of the cold bending of laminated glass

A viscoelastic description via fractional calculus is used to theoretically determine the time-varying stress state in single-curvature cold-bent laminated glass. This approach is proven effective when the relaxation function of the polymeric interlayer can be approximated by branches of power laws, as in most commercial materials. Solutions are obtained numerically by approximating the fractional time derivatives with the L1 formula. This conveniently allows to use a variable time step for a phenomenon characterized by two time-scales, corresponding to the loading process and the long-term relaxation. A parametric analysis shows the effects of polymer type, interlayer thickness, deformation history and operating temperature. A comparison is made with the results from the quasi-elastic approximation, which neglects the memory effect of viscoelasticity, showing that, since the interlayer strain is kept constant in the long term, it provides accurate results in term of peak and asymptotic stresses in glass, although the early stages of the deformation history give rise to differences when the structure is far from the layered or monolithic limits. This study can be useful for the optimization of the cold-bending process.

Effect of glass type and thickness on the static and blast response of LG panels

Laminated glass (LG) is created by bonding multiple glass layers using a polymeric interlayer, which reduces the risk of glass shards by keeping the pieces connected. The interlayer also absorbs cracking energy. This study examines the mechanical properties of three polymeric films (PVB, EVA, and SentryGlas) through tensile tests at different strain rates. The effect of glass type and thickness on the failure and deflection of LG windows is investigated using a full-scale water chamber. To address safety concerns and costs, a dynamic numerical model of LG windows is developed using ANSYS AUTODYN. The model's accuracy is validated against existing experimental data. The results show that tempered glass panels withstand higher pressure than annealed glass panels. Increasing glass thickness enhances the resistance of LG at the pre-cracked stage, with a 10% improvement for EVA and SentryGlas interlayers and a 153% increase for PVB interlayers. However, there is no significant impact on the LG at the cracked stage.

Ester‐Functionalized Polythiophene Interlayers for Enhanced Performance and Stability of Perovskite Solar Cells

AbstractInterfacial defects between the organic–inorganic lead halide perovskite and hole‐transporting layers are one significant factor limiting the performance of the perovskite solar cells (PSCs). These defects typically result from either lead or halide atom vacancies or under‐coordinated Pb2+ atoms, which act as recombination centers for holes. To address this, it is demonstrated that a thin layer of a poly(bithiophene ester) (PBTE) or a poly(terthiophene diester) (PTTDE) introduced between the FA0.92MA0.08Pb(I0.92Br0.08)3 (MA+ = methylammonium; FA+ = formamidinium) perovskite and spiro‐OMeTAD hole transporting material (HTM) layers improves the device stability and power‐conversion efficiency (PCE). The PCE improvements are primarily associated with enhanced open‐circuit voltage and fill factor arising from Lewis‐base passivation of under‐coordinated Pb2+ through interaction with the polymer carbonyl groups, as well as enhanced charge transfer between the perovskite and HTM layers facilitated by the conjugated thiophene functionalities of the polymeric interlayer. Furthermore, the examined polymers improve the thermal and moisture stability of the devices. Encapsulated PSCs with PBTE and PTTDE retain 89 ± 1 and 94 ± 3% of their initial PCE after 1440 h at 65 °C under 0.5‐sun irradiation, respectively, while PSCs without a polymeric interlayer lose almost half of the performance. These results can guide future designs of polymeric interlayers for high‐performance PSCs.

Impact of Polymer Interlayers on All-Solid-State Battery Performance Using a Physicochemical Modeling Approach

Recent studies presented the advantages of incorporating solid-polymer-electrolyte (SPE) interlayers in all-solid-state batteries (ASSB). Still, drawbacks regarding the cell performance are expected due to additional polymer-related overpotentials. The pseudo-two-dimensional (p2D) physicochemical model is extended to account for Li-ion transport in the SPE interlayer and in the ceramic LLZO solid electrolyte (SE), as well as for the charge transfer at the SPE∣LLZO interface using Butler-Volmer-like kinetics. The overpotential analysis for a reference parameterization disclosed a dominant overpotential contribution from the SPE∣LLZO charge transfer and a facilitation with increasing discharge C-rate. Variance-based global sensitivity analyses demonstrate that as the exchange current density between SPE and LLZO increases, polarization losses exhibit an exponential-like reduction. Additionally, the radius of the active material (AM) particles within the composite cathode exerts a significant and dominant influence on cell performance. With an optimization of the SPE∣LLZO exchange current density, the accessible capacity could be increased compared to the reference parameterization from 41% to 61% for a 2C discharge.

Sustainable design of high-performance multifunctional carbon electrodes by one-step laser carbonization for supercapacitors and dopamine sensors.

Laser carbonization is a rapid method to produce functional carbon materials for electronic devices, but many typical carbon precursors are not sustainable and/or require extensive processing for electrochemical applications. Here, a sustainable concept to fabricate laser patterned carbon (LP-C) electrodes from biomass-derived sodium lignosulfonate, an abundant waste product from the paper industry is presented. By introducing an adhesive polymer interlayer between the sodium lignosulfonate and a graphite foil current collector, stable, abrasion-resistant LP-C electrodes can be fabricated in a single laser irradiation step. The electrode properties can be systematically tuned by controlling the laser processing parameters. The optimized LP-C electrodes demonstrate a promising performance in supercapacitors and electrochemical dopamine biosensors. They exhibit high areal capacitances of 38.9 mF cm-2 in 1 M H2SO4 and high energy and power densities of 4.3 μW h cm-2 and 16 mW cm-2 in 17 M NaClO4, showing the best performance among biomass-derived LP-C materials reported so far. After 20 000 charge/discharge cycles, they retain a high capacitance of 81%. Dopamine was linearly detected in the range of 0.1 to 20 μM with an extrapolated limit of detection of 0.5 μM (S/N = 3) and high sensitivity (13.38 μA μM-1 cm-2), demonstrating better performance than previously reported biomass-derived LP-C dopamine sensors.

Hydrolyzed polyacrylonitrile nanofibers as interlayers for ultrathin nanofiltration membranes of high permeance and salt rejection

Interfacial polymerization (IP) is one of the most common approaches to prepare polyamide (PA) nanofiltration (NF) membranes. However, these membranes usually lack permeability because of their dense PA layers created by superfast IP. A strategy to use interlayers has gained widespread popularity because it can regulate IP processes and consequently make loose and thin PA layers. Polymer interlayers are usually thick and dense, lowering the permeance of the NF membranes. Herein, we demonstrate a novel and versatile approach to prepare hydrolyzed polyacrylonitrile (HPAN) nanofiber interlayers that are thin and porous, resulting in highly permeable ultrathin PA NF membranes. HPAN nanofibers were prepared by hydrolysis of PAN and the innovative approach of fast freeze-extraction. These interlayers help to retain more piperazine (PIP) monomers by electrostatic attraction, slow down the IP rate by impeding diffusion of the PIP monomers towards the oil−water interface, and consequently create ultrathin and wrinkled PA layers. For example, ultrathin PA NF membrane (∼34 nm thickness, 13.85 cm2 membrane area) using 20 mL nanofiber dispersion as interlayer has a favorable water permeance (33.7 L m−2 h−1 bar−1) and remarkable salt rejections (98.9 % for Na2SO4 and 99.7 % for MgSO4), suggesting great potential for rapid desalination.

PEO-Based Polymer Membranes As Lithium Protective Interlayers to Improve the Interfacial Compatibility with Sulfide Solid Electrolytes

While the last century was unquestionably dominated by energy generation from fossil fuels, the 21st century seems devoted to the energy transition towards more sustainable sources. Because of their high energy density, efficiency and flexibility, Li-ion batteries (LIBs) are currently dominating the electrochemical energy storage market share. However, driven by the continuous technological progresses resulting in more powerful portable devices as well as the rapid growth of EVs, the rapidly increasing market is demanding for batteries with higher energy densities and longer lifespan. The integration of a high specific capacity and low redox potential material like lithium metal in lithium metal batteries (LMBs) may help to achieve these goals. Nevertheless, its integration in commercial systems requires to address key issues such as users’ safety and environmental risks related to the thermal runaway phenomenon. All-solid-state lithium batteries (ASSLBs) are considered one of the most promising alternatives to state-of-the-art lithium-ion batteries because of their improved safety. Among the several solid electrolytes (SE) proposed, the sulfide-based ones, e.g., Li6PS5Cl (LPSCl), are considered promising candidate materials because of their comparatively high ionic conductivity.[1] Despite these advantages they suffer of some interfacial challenges on both the cathode and the anode side.[2] In this regard, we focused on the SE/lithium interface investigating the use of Li+ ion conductive polymer interlayers with the aim of (i) separate the two interphases suppressing the side reactions and (ii) improve the physical contact between the interphases, to eventually achieve homogeneous lithium stripping-plating improving the compatibility of the sulfide solid electrolyte with lithium metal.Polyethylene oxide (PEO) is a well-known polymer used in electrochemical applications thanks to its ability of conducting lithium ions. Using it as polymer matrix, several PEO-based polymer interlayers were prepared differing in the salt composition. Starting from a PEO/lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) membrane (EO:Li = 10:1), a partially substitution (10 and 20 %wt.) of this last were made with lithium bis(fluorosulfonyl)imide (LiFSI) and lithium tricyanomethanide (LiTCM).[3] The polymer interlayers were prepared by a UV-induced (co)polymerization to interlink the polymer matrix with the tetraglyme plasticizer.[4] The as-obtained sticky membranes were physical-chemically characterized and their interfacial behavior electrochemical investigated.

Characterization of the electrical properties of MPS schottky structures incorporating Fe doped polyvinyl chloride (PVC)

This paper explores the effects of the organic interfacial layer on the electrophysical characteristics of Schottky barrier diodes (SBDs). Three types of SBDs were fabricated: Au-Si (referred to as MS), Au/PVC/Si (referred to as MPS1), and Au-/PVC:Fe/Si (referred to as MPS2). Fe nanopowders were subjected to analysis using XRD, SEM, and EDX techniques to investigate their structural and optical characteristics. To investigate the conduction mechanisms of these diodes, I-V characteristics were examined using thermionic-emission (TE), Cheung, and Norde functions. The surface-state density (N ss ) distribution of energy was determined by analyzing the current–voltage (IF-VF) curve under forward bias conditions. This analysis considered the voltage-dependent barrier height (BH) and ideality factor (n(V)). The results demonstrated that the polymeric interlayer without Fe nanoparticles reduced N ss by a factor of 7, while the presence of Fe nanoparticles led to a two-order magnitude decrease, resulting in improved efficiency in comparison with MS structures. The obtained results indicated that including a polymeric layer in MPS structure enhanced their electrophysical features compared to MS diodes, and significantly increased rectification by 15–45 times. In summary, the existence of an organic interfacial layer significantly altered the conduction mechanisms and electrophysical characteristics of MPS diodes. It was found that the addition of Fe nanoparticles in the interlayer resulted in substantial improvements in N ss , efficiency, rectification, and conduction characteristics compared to MS diodes.

Enhanced Blast Response Simulation of LG Panels Using an Elasto-Damage Model with the Finite Element Method

Laminated glass (LG) windows significantly enhance building safety due to their ability to retain shattered glass within the interlayer, but their susceptibility to failure under blast loading remains a concern. Compared with simplified models, detailed constitutive modeling is essential to evaluate these complex scenarios, as experimental investigation faces limitations in spatial and temporal resolutions. This study presents a robust model-based simulation approach for predicting the brittle failure response of glass in blast-resistant LG windows. An elasto-damage relation for glass (EDG) was integrated with the finite element model (FEM) to predict the blast response. Validation against shock tube testing results was performed to ensure the reliability of the FEM. Material parameters for the polymeric interlayer were obtained through dynamic experiments, enabling a reasonable representation of its constitutive behavior using the Johnson–Cook (JC) model. Additionally, a numerical parametric study was conducted to investigate how different glass types influence blast resistance performance. Tempered glass stood out for its blast resistance compared with annealed and heat-strengthened glass, displaying superior strength against blast loads. The Rankine-based elasto-damage description provides a more precise representation of the failure response than commonly used approaches. These findings contribute to advancing model-based simulation approaches for designing better blast-resistant LG windows, ensuring safer buildings.

Ultra-Low Noise Level Infrared Quantum Dot Photodiodes with Self-Screenable Polymeric Optical Window.

Quantum dot photodiodes (QPDs) have garnered significant attention because of their unparalleled near-infrared (NIR) detection capabilities, primarily attributable to their size-dependent bandgap tunability. Nevertheless, the broadband absorption spectrum of QPD engenders substantial noise floor within superfluous visible light regions, notably hindering their use in several emerging applications necessitating the detection of faint micro-light signals. To overcome these hurdles, a self-screenable NIR QPD featuring an internal optical filter with a thick polymeric interlayer to reduce electronic noise is demonstrated. This effectively screens out undesirable visible light regions while reducing the ionized defect owing to decreased density of state, yielding an extremely low dark current (≈1010 A cm-2 at V = -1V). Consequently, the electronic noise spectral density is attained at levels below ≈10-27 -10-28 A2 Hz-1 , and responsivity (R) dropped to 92% within the visible light spectrum.