钙钛矿(结构)
能量转换效率
卤化物
兴奋剂
材料科学
电导率
化学工程
光电子学
纳米技术
化学
无机化学
物理化学
工程类
作者
Ganbaatar Tumen‐Ulzii,Kotaro Takekuma,Yuki Fujita,Dai Senba,Chathuranganie A. M. Senevirathne,Yi-Ting Lee,Atsushi Wachi,Hiroshi Sato,Toshinori Matsushima,Chihaya Adachi
摘要
N,N-di(4-methoxyphenyl)amino-9,9′-spirobifluorene (spiro-OMeTAD) is a widely used hole transport layer (HTL) material for emerging lead halide hybrid perovskite solar cells (PSCs). Finding alternative HTL materials is required for the future development of more efficient and stable PSCs. Here, we developed a new HTL material of N2,N2,N,7N7-tetrakis(4-methoxyphenyl)benzo[b]benzo[4,5]thieno[2,3-d]thiophene-2,7-diamine (TBTD). Chemically doped TBTD provided better hole extraction in PSCs than chemically doped spiro-OMeTAD due to higher electrical conductivity and a more suitable hole transport energy level. Thus, PSCs with the TBTD HTL showed higher power conversion efficiency (∼21%) than spiro-OMeTAD HTL (∼19%). The operational stability of TBTD-based PSCs was similar to that of spiro-OMeTAD-based PSCs. The findings discussed in this study will aid in the future development of high-performance PSCs.
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