Sasaki Yuto, Murayama Mariko, Zhao Xinwei
Department of Physics, Graduate Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
ACS Omega. 2024 Aug 5;9(32):34339-34344. doi: 10.1021/acsomega.4c00535. eCollection 2024 Aug 13.
Perovskite solar cells have gained significant attention in recent years due to their lightweight nature, flexibility, and ability to generate power even in weak-light conditions. Despite these advantages, the current mainstream perovskite solar cells contain lead, raising concerns about their environmental and human health effects. Tin is expected to be a substitutional element for lead; however, tin-based perovskite solar cells currently have low power conversion efficiency. Altering the composition of the perovskite is crucial for enhancing its performance. In this study, perovskite solar cells with mixed MA/FA and I/Br components were designed and fabricated based on the calculation of the tolerance factor. The crystallinity and band gap of perovskite thin films were manipulated by changing the compositions of anions and cations. A suitable composition ratio for perovskite solar cells was proposed and discussed.
近年来，钙钛矿太阳能电池因其重量轻、柔韧性好以及即使在弱光条件下也能发电的能力而备受关注。尽管具有这些优点，但目前主流的钙钛矿太阳能电池含有铅，这引发了人们对其环境和人类健康影响的担忧。锡有望成为铅的替代元素；然而，目前基于锡的钙钛矿太阳能电池的功率转换效率较低。改变钙钛矿的成分对于提高其性能至关重要。在本研究中，基于容忍因子的计算，设计并制备了具有混合MA/FA和I/Br成分的钙钛矿太阳能电池。通过改变阴离子和阳离子的组成来控制钙钛矿薄膜的结晶度和带隙。提出并讨论了钙钛矿太阳能电池合适的组成比例。
