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Acid Additives Enhancing the Conductivity of Spiro‐OMeTAD Toward High‐Efficiency and Hysteresis‐Less Planar Perovskite Solar Cells
Author(s) -
Li Zhen,
Tinkham Jonathan,
Schulz Philip,
Yang Mengjin,
Kim Dong Hoe,
Berry Joseph,
Sellinger Alan,
Zhu Kai
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201601451
Subject(s) - materials science , perovskite (structure) , hysteresis , planar , conductivity , chemical engineering , optoelectronics , condensed matter physics , chemistry , computer science , physics , computer graphics (images) , engineering
A general doping strategy, using a wide range of acids with different p K a values as additive , is demonstrated to enhance the conductivity of spiro‐OMeTAD, the dominant hole transport material in perovskite solar cells (PSCs). Hysteresis‐less planar PSCs with ≈19% efficiency and better open‐circuit voltage and fill factor is achieved with acid doped spiro‐OMeTAD.