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Record Photocurrent Density over 26a??mAa??cm <sup>a??2</sup> in Planar Perovskite Solar Cells Enabled by Antireflective Cascaded Electron Transport Layer
摘要： Here an antireflective cascaded SnO2/TiO2-Cl electron transport layer (ETL) is devised to enhance the performance of planar perovskite solar cells (PSCs). The primary optical reflection of planar PSCs at the front side can be dramatically reduced by using cascaded ETL. Based on this strategy, we achieved a record-high short-circuit current density of 26.1 mA cm-2 and a high PCE of 22.9% in FAPbI3-based planar PSCs.
关键词： planar perovskite solar cells,cascaded electron transport layers,anti-reflection,bilayer,short-circuit current density
更新于2025-09-19 17:13:59
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Light-trapping strategy for PEDOT:PSS/c-Si nanopyramid based hybrid solar cells embedded with metallic nanoparticles
摘要： In this article, we have investigated the combined role of nanopyramid (NP) array and metal nanoparticles (MNPs) in enhancing the light trapping ability and improving the photo-absorption of PEDOT:PSS/c-Si Hybrid Solar Cells (HSCs) using a 3D ?nite-di?erence time-domain (FDTD) method. A parametric optimization of the essential geometrical parameters of NPs and MNP is performed based on short circuit current density (Jsc). The optimization result reveals that maximum Jsc of 35.91 mA/cm2 is achievable with top textured NP (without MNPs) which is 24.38% higher than the planar counterpart. However, the absorption spectrum is broadened with the insertion of Al MNP at rear side of the HSC. This is also accompanied by almost two fold increase in Jsc to 41.71 mA/cm2 which is 44.47% higher the planar HSCs. The photovoltaic parameters such as Jsc, Voc, PCE and Fill Factor (FF) are calculated using the DEVICE software for NP and NP embedded with Al MNPs based c-Si Solar Cells. The physics at the interface of inorganic nanostructure and organic material layer is thoroughly described. In addition to this, we have tried to decode the underlying physics for the enhancement of photon absorption in nanopyramidal structures and MNPs structures through an extensive analysis of the photo- generation rate, electric ?eld intensity, power absorption pro?les, PCE and FF of nanopyramidal, nanopyramidal with MNP and planar HSCs.
关键词： Absorption,Metal nanoparticles,Short circuit current density,Nanopyramid,PEDOT:PSS,FDTD,Hybrid solar cells
更新于2025-09-19 17:13:59
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[IEEE 2019 10th International Conference on Computing, Communication and Networking Technologies (ICCCNT) - Kanpur, India (2019.7.6-2019.7.8)] 2019 10th International Conference on Computing, Communication and Networking Technologies (ICCCNT) - An organic-inorganic solar cell with graphene as an electron transport layer: an approach to increase the carrier collection efficiency
摘要： Methyl-Ammonium lead halide based solar cell has shown a tremendous approach to fulfill the energy crisis on the earth for its high efficiency and low manufacturing cost. While there are some other materials which influence the execution of Perovskite sunlight based cell, these materials are nothing but the electron as well as hole transport materials. In this article the behavior and performances of electron transport materials are mostly focused which generally increase the proficiency of Perovskite solar cell by simultaneously increasing the open circuit voltage and short circuit current. The role of graphene as an electron transport material is mainly discussed and also compared with some other metal oxide electron transport material as well as organic-based electron transport material. As keeping graphene as an electron transport material the predicted results of Perovskite solar cell are as follows: - maximum power conversion efficiency (PCE) = 23.42%, short-circuit-current-densit=3.25A/m2,open-circuit-voltage=0.86v,fill factor=0.83au. So graphene-based electron transport material can be the entry for the improvement of Perovskite solar cell.
关键词： electron transport materials,fill factor,efficiency,open circuit voltage,graphene,Perovskite solar cell,short-circuit current density
更新于2025-09-16 10:30:52
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A Computational Protocol for Precise Prediction of Dye-Sensitized Solar Cell Performance
摘要： Numerous organic dyes have been developed for dye-sensitized solar cells (DSSCs). However, theoretical screening has not played the due role in designing new dyes. It is mainly attributed that there is rarely quantitative calculation and the inaccurate estimated values for short-circuit current density (JSC) and open-circuit photovoltage (VOC), especially for VOC. In this work, VOC is theoretically predicted by two different models for three D-π-A organic dyes (1, 2, and 3) with the same π bridge and acceptor as well as different donors. Although there is slight deviation for their structures, their properties are successfully differentiated by accurate quantitative calculations. Dimethoxybenzene substituted indoline is more suitable to be donor than methoxy substituted triphenylamine and methyl substituted indoline when it combines with 8H-thieno[2′,3′:4,5]thieno[3,2-b]thieno[2,3-d]pyrrole (TTP) as π bridge and cyanoacrylic acid as acceptor. The properties of donor not only are related with the core group but also are determined by the substituted group. Less than 10% deviation between theoretical and experimental results is an insurance to perform the reasonable prediction for photocurrent-photovoltage.
关键词： Short-circuit current density,Organic dyes,Computational protocol,Open-circuit photovoltage,Theoretical screening,Dye-sensitized solar cells
更新于2025-09-16 10:30:52
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Stilbene Based Organic Dye as Efficient Sensitizer for NLO and Dye-Sensitized Solar Cells: A First Principle Study
摘要： In this study, we have designed five different Stilbene based dyes as efficient sensitizers for Nonlinear Optical Properties (NLO) and Dye-Sensitized Solar Cells (DSSCs). Density Functional Theory (DFT) and Time-Dependent DFT (TD-DFT) have used to investigate molecular properties, in order to influence and performance of the dye sensitizer in the DSSCs. The theoretical result indicates that the HOMO and LUMO energy levels of this dye can be ensured a positive effect on the process of photoelectron injection into semiconductor surface and dye regeneration by the electrolyte. The solar energy conversion efficiency, effective key parameters in influence with the Short-Circuit Current Density (JSC), Light Harvesting Efficiency (LHE) and Electron injection driving force (?Ginject) were discussed. The Stilbene-based dyes can be used as a potential sensitizer for photoelectron injection into the semiconductor surface due to its best electronic structure and optical properties of the good photovoltaic parameters.
关键词： Reorganization energy,Light Harvesting Efficiency,Driving force,Short-Circuit Current Density,Dye sensitizer
更新于2025-09-12 10:27:22