Reconfiguring the band-edge states of photovoltaic perovskites by conjugated organic cations | Zendy

Jingjing Xue | Zendy; Rui Wang | Zendy; Xihan Chen | Zendy; Canglang Yao | Zendy; Xiaoyun Jin | Zendy; KaiLi Wang | Zendy; Wenchao Huang | Zendy; Tianyi Huang | Zendy; Yepin Zhao | Zendy; Yaxin Zhai | Zendy; Dong Meng | Zendy; Shaun Tan | Zendy; Ruzhang Liu | Zendy; ZhaoKui Wang | Zendy; Chenhui Zhu | Zendy; Kai Zhu | Zendy; Matthew C. Beard | Zendy; Yanfa Yan | Zendy; Yang Yang | Zendy

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Reconfiguring the band-edge states of photovoltaic perovskites by conjugated organic cations

Author(s) -

Jingjing Xue,

Rui Wang,

Xihan Chen,

Canglang Yao,

Xiaoyun Jin,

KaiLi Wang,

Wenchao Huang,

Tianyi Huang,

Yepin Zhao,

Yaxin Zhai,

Dong Meng,

Shaun Tan,

Ruzhang Liu,

ZhaoKui Wang,

Chenhui Zhu,

Kai Zhu,

Matthew C. Beard,

Yanfa Yan,

Yang Yang

Publication year - 2021

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.abd4860

Subject(s) - perovskite (structure) , intercalation (chemistry) , band gap , conjugated system , chemistry , inorganic chemistry , enhanced data rates for gsm evolution , chloride , materials science , crystallography , optoelectronics , organic chemistry , polymer , telecommunications , computer science

A-sites join the band edge The band edge of hybrid organic-inorganic perovskites, which have the general formula ABX3 , is mainly controlled by the inorganic X anions (such as chloride) and the B cation (such as lead). Organic A-site cations usually only exert indirect structural effects because their electronic levels lie far from the band edge. Xueet al. show that cations with large π-conjugated structures can interact with inorganic frontier molecular orbitals. A surface layer of ethylammonium pyrene, which had an optimal intercalation distance, increased hole mobilities and power conversion efficiencies relative to a reference inorganic perovskite and also improved device stability.Science , this issue p.636

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