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High Efficiency Planar p‐i‐n Perovskite Solar Cells Using Low‐Cost Fluorene‐Based Hole Transporting Material
Author(s) -
Zhang Jing,
Sun Quan,
Chen Qiaoyun,
Wang Yikai,
Zhou Yi,
Song Bo,
Yuan Ningyi,
Ding Jianning,
Li Yongfang
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201900484
Subject(s) - materials science , pedot:pss , perovskite (structure) , energy conversion efficiency , fluorene , dopant , planar , yield (engineering) , optoelectronics , chemical engineering , nanotechnology , doping , composite material , polymer , layer (electronics) , computer graphics (images) , computer science , engineering
For commercial applications, it is a challenge to find suitable and low‐cost hole‐transporting material (HTM) in perovskite solar cells (PSCs), where high efficiency spiro‐OMeTAD and PTAA are expensive. A HTM based on 9,9‐dihexyl‐9 H ‐fluorene and N , N ‐di‐p‐methylthiophenylamine (denoted as FMT) is designed and synthesized. High‐yield FMT with a linear structure is synthesized in two steps. The dopant‐free FMT‐based planar p‐i‐n perovskite solar cells (pp‐PSCs) exhibit a high power conversion efficiency (PCE) of 19.06%, which is among the highest PCEs reported for the pp‐PSCs based on organic HTM. For comparison, a PEDOT:PSS HTM‐based pp‐PSC is fabricated under the same conditions, and its PCE is found to be 13.9%.
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