Organosulfonium cations have attracted growing attention over conventional organoammonium cations for the development of moisture-stable hybrid organic–inorganic metal halide perovskite solar cells (PSCs). Herein, the synthesis of a moisture-stable trimethylsulfoxonium lead triiodide ((CH₃)₃SOPbI₃ or TMSOPbI₃) perovskite is described via a two-step solution process in an aqueous medium. The synthesized TMSOPbI₃ exhibits a one-dimensional nanorod array with an optical bandgap of 2.30 eV and a hexagonal crystal structure. In addition, the fabricated fluorine-doped tin oxide/compact-TiO₂/mesoporous-TiO₂/TMSOPbI₃/CuSCN/Au PSC device generates a maximum power conversion efficiency (PCE) of 2.23% with a good moisture stability at ambient temperature and relative humidity (50%) with no PCE loss during 336 h and no change in the crystal structure during 50 days. The high moisture stability of the device is attributed to the absence of hydrogen bonding between the trimethylsulfoxonium (TMSO⁺) cation and the H₂O molecules along with strong electrostatic interactions between the TMSO⁺ and [PbI₆]^4- polyhedra in the TMSOPbI₃. This research has demonstrated that TMSO⁺ is suitable for fabricating a stable perovskite-like material with good optoelectronic properties and is a promising material for practical applications.

与传统有机铵阳离子相比，有机锍阳离子在开发耐湿杂化有机-无机金属卤化物钙钛矿太阳能电池（PSC）方面受到越来越多的关注。在本文中，描述了通过在水性介质中的两步溶液法合成水分稳定的三甲基锍三碘化铅（（CH ₃） ₃ SOPbI ₃或 TMSOPbI ₃ ）钙钛矿。合成的TMSOPbI ₃呈现出具有2.30 eV 光学带隙和六方晶体结构的一维纳米棒阵列。此外，制备的掺氟氧化锡/致密-TiO ₂ /介孔-TiO ₂ /TMSOPbI ₃/CuSCN/Au PSC 器件产生的最大功率转换效率 (PCE) 为 2.23%，在环境温度和相对湿度 (50%) 下具有良好的水分稳定性，336 小时内没有 PCE 损失，并且在 50 天内晶体结构没有变化. 该器件的高水分稳定性归因于三甲基锍 (TMSO ⁺ ) 阳离子和 H ₂ O 分子之间不存在氢键，以及 TMSOPbI _{3 中}TMSO ⁺和 [ PbI ₆ ] ^4-多面体之间的强静电相互作用. 该研究表明，TMSO ⁺ 适用于制造具有良好光电性能的稳定类钙钛矿材料，是一种具有实际应用前景的材料。