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

Autor:	Xiaoyun Jin, Zhao-Kui Wang, Kai Zhu, Ruzhang Liu, Matthew C. Beard, Yaxin Zhai, Yepin Zhao, Yang Yang, Kai-Li Wang, Rui Wang, Canglang Yao, Wenchao Huang, Yanfa Yan, Chenhui Zhu, Tianyi Huang, Dong Meng, Shaun Tan, Jingjing Xue, Xihan Chen
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Multidisciplinary Materials science Intercalation (chemistry) Halide Conjugated system Ion Divalent Crystallography chemistry.chemical_compound chemistry Atomic orbital Pyrene Perovskite (structure)
Zdroj:	Science. 371:636-640
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.abd4860
Popis:	A-sites join the band edge The band edge of hybrid organic-inorganic perovskites, which have the general formula ABX 3 , 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. Xue et 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
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76776fc8a4729c4588d6808941a937e5 https://doi.org/10.1126/science.abd4860 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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