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Extending the Lifetime of Perovskite Solar Cells using a Perfluorinated Dopant.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Salado Manuel, Ramos F Javier, Manzanares Valentin M, Gao Peng, Nazeeruddin Mohammad Khaja, Dyson Paul J, Ahmad Shahzada,
Project Turning functionalised ionic liquids into functional materials for catalysis and other applications
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Original article (peer-reviewed)

Journal ChemSusChem
Volume (Issue) 9(18)
Page(s) 2708 - 2714
Title of proceedings ChemSusChem
DOI 10.1002/cssc.201601030

Abstract

The principle limitation of perovskite solar cells is related to their instability and, hence, their limited lifetime. Herein, we employ an imidazolium iodide dopant, 1-methyl-3-(1H,1H,2H,2H-nonafluorohexyl)-imidazolium iodide, containing a perfluorous appendage, which leads to prolonged (unencapsulated, under Ar atmosphere) device activities exceeding 100 days without compromising the power conversion efficiency and other photovoltaic parameters. The extended lifetime of the device can be attributed, at least in part, to the hydrophobic nature of the imidazolium iodide salt. The functionalization of the perovskite material was found to have negligible influence on the perovskite crystal structure.
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