Ma Haoran, Xu Yajun, Zhao Jun, Wu Jun, Sun Luanhong, Zheng Jinjie, Zhang Wei
School of Electrical and Energy Engineering, Key Laboratory of Optoelectronic Materials, Nantong Institute of Technology, Nantong, 226002, Jiangsu, People's Republic of China.
School of Materials Engineering, Jinling Institute of Technology, Nanjing, 211169, People's Republic of China.
Discov Nano. 2025 Sep 15;20(1):161. doi: 10.1186/s11671-025-04357-w.
To improve charge extraction and address UV-induced degradation in perovskite solar cells, we propose and numerically evaluate a TiO/SnO bilayer electron transport layer (ETL) architecture. Using physics-based simulation, we systematically analyze the influence of individual and combined ETL thicknesses on key parameters. The results identify an optimal configuration of 100 nm TiO and 20 nm SnO, which minimizes interfacial recombination and enhances electron transport. Furthermore, CHNHSnI is employed as a lead-free absorber layer. Simulation results demonstrate a notable efficiency improvement upto 20.80%. The experimental results verified that the bi-layer Sn-based perovskite can achieve a conversion efficiency of 10.3%. This study highlights the potential of simulation-guided design in optimizing multilayer ETL structures and advancing environmentally friendly, high-efficiency perovskite photovoltaics.
为了改善钙钛矿太阳能电池中的电荷提取并解决紫外线诱导的降解问题，我们提出并通过数值评估了一种TiO/SnO双层电子传输层（ETL）结构。利用基于物理的模拟，我们系统地分析了单个和组合的ETL厚度对关键参数的影响。结果确定了100 nm TiO和20 nm SnO的最佳配置，该配置可使界面复合最小化并增强电子传输。此外，CHNHSnI被用作无铅吸收层。模拟结果表明效率显著提高，高达20.80%。实验结果证实，双层Sn基钙钛矿可实现10.3%的转换效率。本研究突出了模拟指导设计在优化多层ETL结构以及推进环境友好型高效钙钛矿光伏方面的潜力。
