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Interfacial modification by multifunctional octocrylene for high efficiency and stable planar perovskite solar cells

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Abstract

Interfacial modification of the perovskite surface with octocrylene (2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate, OCT) is capable of enhancing humidity stability and passivating the defects of perovskite films. In this study, octocrylene can be attached to the surface of the perovskite, and the carbonyl group (C[double bond, length as m-dash]O) in octocrylene achieved excellent passivation through the Lewis base electron passivation of Pb2+ ions. By increasing the concentration of the octocrylene/IPA solution, the modified device exhibited an optimal PCE of 20.54% and a steady state output PCE of 19.75%. This study shows that the introduction of octocrylene in the preparation of perovskite could effectively enhance the performance of perovskite solar cells.

Graphical abstract: Interfacial modification by multifunctional octocrylene for high efficiency and stable planar perovskite solar cells

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Article information


Submitted
09 Dec 2019
Accepted
05 May 2020
First published
19 May 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Interfacial modification by multifunctional octocrylene for high efficiency and stable planar perovskite solar cells

Y. Huang, S. Li, C. Wu, S. Wang, C. Wang and R. Ma, Chem. Commun., 2020, Advance Article , DOI: 10.1039/C9CC09075D

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