Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells

Autor:	Zhenyi Ni, Chunxiong Bao, Ye Liu, Qi Jiang, Wu-Qiang Wu, Shangshang Chen, Xuezeng Dai, Bo Chen, Barry Hartweg, Zhengshan Yu, Zachary Holman, Jinsong Huang
Rok vydání:	2020
Předmět:	Trap (computing) Multidisciplinary Materials science Differential capacitance Doping Halide Diffusion (business) Diffusion capacitance Molecular physics Capacitance Perovskite (structure)
Zdroj:	Science. 367:1352-1358
ISSN:	1095-9203 0036-8075
Popis:	Mapping perovskite trap states The high efficiency of hybrid inorganic-organic perovskite solar cells is mainly limited by defects that trap the charge carriers and lead to unproductive recombination. Ni et al. used drive-level capacitance profiling to map the spatial and energetic distribution of trap states in both polycrystalline and single-crystal perovskite solar cells. The interface trap densities were up to five orders of magnitude higher than the bulk trap densities. Deep traps were mainly located at the interface of perovskites and hole-transport layers, where processing created a high density of nanocrystals. These results should aid efforts aimed at avoiding trap-state formation or passivating such defects. Science , this issue p. 1352
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77e3c4211e7171e23de2189ff009bba9 https://doi.org/10.1126/science.aba0893 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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