无铅CS2TiBr6钙钛矿太阳能电池结构的模拟与优化

Hayat Arbouz
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引用次数: 2

摘要

在这项工作中,我们模拟和优化了基于无铅钙钛矿材料CS2TiBr6的太阳能电池,其能带隙能量为1.6 eV,结构为FTO/TiO2/ CS2TiBr6 /Cu2O/Au。其中TiO2表示电子输运层ETL, Cu2O表示空穴输运层HTL。我们研究中使用的模拟模型描述了J-V特性的计算,考虑了电荷载流子过程和前后界面复合的影响。对ETL/钙钛矿和钙钛矿/ html界面缺陷密度的不同值进行了PV参数评价。研究了不同的ETL和html层的替代效果。得到的结果允许优化最佳配置,考虑前后接口的带隙偏移,以获得最佳效率和性能。最后,观察其效果后,调整活动层、ETL层和html层的厚度。本研究使我们在厚度分别为50 nm和150 nm,活性层优化厚度为1.5 μm的结构中使用以下结构器件SnO2和NiO作为ETL和HTL,转换效率达到13.9%。这项研究的目的是开发一种无毒的钙钛矿电池,可以用作串联装置的顶部。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation and Optimization of a Lead-Free CS2TiBr6 Perovskite solar cell structure
In this work, we have simulated and optimized a solar cell based on the lead-free Perovskite material CS2TiBr6 with 1.6 eV bandgap energy, according to the configuration FTO/TiO2/ Cs2TiBr6/Cu2O/Au. Where TiO2 represents the electron transport layer ETL while Cu2O represents the hole transport layer HTL. The simulation model used in our study describing the calculation of the J-V characteristic, takes into account charge carrier processes and the impact of recombination at the front and back interfaces. The PV parameters were evaluated for different values of defect density at the ETL/Perovskite and Perovskite/HTL interfaces. The effect of different alternative ETL and HTL layers has been studied. The results obtained allowed to optimize the best configuration, taking into account the bandgap offsets at front and back interfaces in order to obtain the best efficiency and performance. Finally, after observing their effect, the thicknesses of the active, ETL and HTL layers were adjusted. This study allowed us to reach a conversion efficiency of 13.9% using the following architecture device SnO2 and NiO as ETL and HTL in the structure with thicknesses of 50 nm and 150 nm respectively and 1.5 μm optimized thickness for the active layer. The aim of this study is to develop a non-toxic Perovskite cell that could be used as a top part of a tandem device.
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