Design and optimization of Cs2AgInBr6/CsSnI3-based dual-absorber inorganic perovskite solar cell for enhanced broadband absorption

IF 3 Q2 PHYSICS, CONDENSED MATTER

Micro and Nanostructures Pub Date : 2025-07-16 DOI:10.1016/j.micrna.2025.208274

Janmoni Borah , Smriti Baruah

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Abstract

This article introduces an innovative dual-absorber solar cell design using Dicesium Silver Indium Hexabromide (Cs₂AgInBr₆) and Cesium Tin Tri-iodide (CsSnI₃) in a FTO/ZnO/Cs₂AgInBr₆/CsSnI₃/CFTS heterojunction architecture. The optimal energy band alignment, along with structural and electrical parameter optimization of the Cs₂AgInBr₆/CsSnI₃ dual-absorber configuration, enhances power conversion efficiency (PCE), overcoming limitations in single-absorber Cs₂AgInBr₆ perovskite photovoltaic cells (PPCs). This enhancement is due to the synergistic effects between absorbers, improving light absorption and charge carrier dynamics. Using SCAPS-1D, critical parameters such as absorber thickness, defect density, and carrier transport layers were optimized. The dual-absorber achieved a PCE of 25.32 %, V_oc of 0.95 V, fill factor of 86 %, and J_sc of 31.9 mA/cm², outperforming the 11.96 % PCE of single-absorber PPCs. A peak quantum efficiency (QE) of 90 % spanning over 300–1000 nm wavelength range was also obtained, surpassing the 79 % QE of single absorbers over 300–830 nm.

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基于Cs2AgInBr6/ cssni3的双吸收体无机钙钛矿太阳能电池的设计与优化

本文介绍了一种利用六溴化二银铟（Cs2AgInBr6）和三碘化铯锡（CsSnI3）在FTO/ZnO/Cs2AgInBr6/CsSnI3/CFTS异质结结构中的创新双吸收体太阳能电池设计。优化的能带排列，以及Cs2AgInBr6/CsSnI3双吸收结构的结构和电气参数优化，提高了功率转换效率（PCE），克服了单吸收Cs2AgInBr6钙钛矿光伏电池（PPCs）的局限性。这种增强是由于吸收剂之间的协同作用，改善了光吸收和载流子动力学。利用SCAPS-1D对吸收剂厚度、缺陷密度和载流子输运层等关键参数进行了优化。双吸收体的PCE为25.32%，Voc为0.95 V，填充系数为86%，Jsc为31.9 mA/cm2，优于单吸收体PPCs 11.96%的PCE。在300-1000 nm波长范围内获得了90%的峰值量子效率（QE），超过了300-830 nm范围内单个吸收剂的79%的峰值量子效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Micro and Nanostructures

CiteScore

6.50

自引率

0.00%

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