Shi Yangliu, Quan Haoran, Liu Chuang, Han Yue, Zhang Heyang, Chen Chen, Dong He, Wang Jintao, Wang Jin
College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China.
Jilin Provincial Key Laboratory of Wide Bandgap Semiconductor Material Growth and Device Applications, Jilin Normal University, Changchun 130103, China.
ACS Appl Mater Interfaces. 2025 Jun 18;17(24):35771-35780. doi: 10.1021/acsami.5c07790. Epub 2025 Jun 4.
Metal halide perovskite materials are highly favored in solar cells owing to their excellent power conversion efficiency, simple preparation process, and low-cost manufacturing. Among the many hole transport materials, inorganic materials are favored because of their remarkable cost effectiveness, chemical stability, and long-term stability. Although NiO is preferred in inorganic hole transport layer material due to its excellent performance, its high reactivity with the perovskite interface may lead to interface defects and carrier recombination, affecting the long-term stability of the device. To further enhance both the performance and long-term stability of perovskite solar cells, the effect of environmental relative humidity on the performance of NiO films was discussed in this study. By comparing and analyzing the surface morphology and physical properties of NiO films prepared under different humidity conditions, we found that relative humidity has a significant effect on the performance of NiO films and their prepared perovskite solar cells. In particular, NiO films prepared at 60% relative humidity and fabricated into perovskite solar cells exhibited a significantly higher short-circuit current density () and fill factor (FF). These findings provide an important reference for optimizing the preparation process and enhancing the performance of perovskite-based solar devices.
金属卤化物钙钛矿材料因其优异的功率转换效率、简单的制备工艺和低成本制造而在太阳能电池中备受青睐。在众多空穴传输材料中，无机材料因其显著的成本效益、化学稳定性和长期稳定性而受到青睐。尽管由于其优异的性能，NiO在无机空穴传输层材料中备受青睐，但其与钙钛矿界面的高反应性可能导致界面缺陷和载流子复合，影响器件的长期稳定性。为了进一步提高钙钛矿太阳能电池的性能和长期稳定性，本研究讨论了环境相对湿度对NiO薄膜性能的影响。通过比较和分析在不同湿度条件下制备的NiO薄膜的表面形貌和物理性能，我们发现相对湿度对NiO薄膜及其制备的钙钛矿太阳能电池的性能有显著影响。特别是，在60%相对湿度下制备并制成钙钛矿太阳能电池的NiO薄膜表现出明显更高的短路电流密度（）和填充因子（FF）。这些发现为优化制备工艺和提高基于钙钛矿的太阳能器件的性能提供了重要参考。
