Dopant-Free Hole-Transporting Material with a C 3 h Symmetrical Truxene Core for Highly Efficient Perovskite Solar Cells

作者：Chuyi Huang, Weifei Fu, Chang‐Zhi Li, Zhongqiang Zhang, Weiming Qiu, Minmin Shi, Paul Heremans, Alex K.‐Y. Jen, Hongzheng Chen · 发表于：Journal of the American Chemical Society · 年份：2016 · DOI：10.1021/jacs.6b00039 · 被引用次数：490 · 研究领域：Perovskite Materials and Applications、Conducting polymers and applications、Organic Electronics and Photovoltaics

Herein we present a new structural design of hole-transporting material, Trux-OMeTAD, which consists of a C3h Truxene-core with arylamine terminals and hexyl side-chains. This planar, rigid, and fully conjugated molecule exhibits excellent hole mobility and desired surface energy to the perovskite uplayer. Perovskite solar cells fabricated using the p-i-n architecture with Trux-OMeTAD as the p-layer, show a high PCE of 18.6% with minimal hysteresis.