Acid Additives Enhancing the Conductivity of Spiro‐OMeTAD Toward High‐Efficiency and Hysteresis‐Less Planar Perovskite Solar Cells

A general doping strategy, using a wide range of acids with different pKa 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 v...

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Bibliographic Details
Published in:Advanced energy materials 2017-02, Vol.7 (4), p.np-n/a
Main Authors: Li, Zhen, Tinkham, Jonathan, Schulz, Philip, Yang, Mengjin, Kim, Dong Hoe, Berry, Joseph, Sellinger, Alan, Zhu, Kai
Format: Article
Language:English
Subjects:
acids
Additives
doping
Efficiency
Electric potential
hole transport layer
Lithosphere
perovskite solar cells
Perovskites
Photovoltaic cells
Solar cells
Strategy
Voltage
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Summary:A general doping strategy, using a wide range of acids with different pKa 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.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201601451