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Planar Organic‐Si Hybrid Solar Cell with MoO x Mixed PEDOT:PSS as Hole Injection Layer Profits from Mo 5+ and Mo 6+ Synergistic Effects
Author(s) -
Fang Wenzhong,
Wang Pan,
Ni Zitao,
Sun Tao,
Xiang Chaoyu,
Yue Kun,
Wang Rongfei,
Yang Jie,
Zhou Yao,
Wang Chong,
Yang Yu
Publication year - 2020
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202000754
Subject(s) - pedot:pss , materials science , dopant , heterojunction , energy conversion efficiency , solar cell , chemical engineering , optoelectronics , work function , organic solar cell , layer (electronics) , nanotechnology , doping , polymer , composite material , engineering
Abstract Poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole injection layer plays an important role in planar Si/PEDOT:PSS heterojunction solar cells (HSCs). Herein, a MoO x mixed aqueous PEDOT:PSS cosolvent is developed and is applied into a Si/PEDOT:PSS solar cell preparation via a time‐saving one‐step spin‐coating method. With an optimal concentration of MoO x dopants, the power conversion efficiency of the device exhibits from 10.26% up to 13.82% with all inherent photovoltaic parameters enhanced. The detailed characterization and analytical results indicate that an advanced electronic property is produced by MoO x dopants and interface optimization caused by synergistic effects from Mo 5+ and Mo 6+ species with PEDOT:PSS, which enhances its interface work function and promotes hole transportation capacity. The result paves a path for exploring efficient Si/PEDOT:PSS HSCs with suitable functional material and a simple solution‐processable method.