材料科学
掺杂剂
钙钛矿(结构)
介观物理学
分子
电子迁移率
平面的
纳米技术
光电子学
化学工程
兴奋剂
有机化学
工程类
化学
计算机图形学(图像)
物理
量子力学
计算机科学
作者
Yong Li,Kyle R. Scheel,Robert G. Clevenger,Wan Shou,Heng Pan,Kathleen V. Kilway,Zhonghua Peng
标识
DOI:10.1002/aenm.201801248
摘要
Abstract The hole transporting layer (HTL) plays an important role in realizing efficient and stable perovskite solar cells (PSCs). In spite of intensive research efforts toward the development of HTL materials, low‐cost, dopant‐free hole transporting materials that lead to efficient and stable PSCs remain elusive. Herein, a simple polycyclic heteroaromatic hydrocarbon‐based small molecule, 2,5,9,12‐tetra( tert ‐butyl)diacenaphtho[1,2‐ b :1′,2′‐ d ]thiophenen, as an efficient HTL material in PSCs is presented. This molecule is easy to synthesize and inexpensive. It is hydrophobic and exhibits excellent film‐forming properties on perovskites. It has unusually high hole mobility and a desirable highest occupied molecular orbital energy level, making it an ideal HTL material. PSCs fabricated using both the n‐i‐p planar and mesoscopic architectures with this compound as the HTL show efficiencies as high as 15.59% and 18.17%, respectively, with minimal hysteresis and high long term stability under ambient conditions.
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