now reaching efficiencies of greater than 20 %, the stability of PSC devices has become a critical challenge for commercialization. However, most efficient hole-transporting materials (HTMs) thus far still rely on the state-of-the-art methoxy triphenylamine (MOTPA) donor unit in which methoxy groups usually reduce the device stability. Herein, a carbazole-fluorene hybrid has been employed as a methoxy-free
随着基于
钙钛矿的太阳能电池(PSC)的效率现已超过20%,PSC器件的稳定性已成为商业化的关键挑战。但是,迄今为止,最有效的空穴传输材料(HTM)仍然依赖于最新的甲氧基
三苯胺(MO
TPA)供体单元,其中甲氧基通常会降低器件的稳定性。在本文中,
咔唑-
芴杂化物已被用作不含甲氧基的供体来构建有机HTM。
茚并[1,2-b]
咔唑基团不仅继承了
咔唑和
芴的特征,而且还具有由庞大的平面结构引起的其他优点。因此,赋予
茚并[1,2-b]
咔唑的M129同时显示出超过20%的有希望的效率和优异的长期稳定性。