The synthesis, characterization, and incorporation of open-cage [60]fullerene derivatives as electron-transporting materials (ETMs) in perovskite solar cells (PSCs) with an inverted planar (p-i-n) structure is reported. Following optical and electrochemical characterization of the open-cage fullerenes 2a-c, p-i-n PSCs with a indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS)/perovskite/fullerene/Ag structure were prepared. The devices obtained from 2a-b exhibit competitive power conversion efficiencies (PCEs) and improved open-circuit voltage (Voc) values (>1.0 V) in comparison to a reference cell based on phenyl-C61-butyric-acid methyl-ester (PC61BM). These results are rationalized in terms of a) the higher passivation ability of the open-cage fullerenes with respect to the other fullerenes, and b) a good overlap between the highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) levels of 2a-b and the conduction band of the perovskite
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application/pdf
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eng
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MDPI (Multidisciplinary Digital Publishing Institute)
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-85341-P/ES/AVANCES EN LA REACTIVIDAD DE FULLERENOS Y NANOTUBOS: ESTUDIOS TEORICO-EXPERIMENTALES DE CICLACIONES CATALIZADAS POR METALES DE TRANSICION/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-83587-P/ES/CATALISIS BIOMIMETICA DE CICLACIONES CARBOCATIONICAS CON RECEPTORES SINTETICOS/
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Reproducció digital del document publicat a: https://doi.org/10.3390/ma12081314
Castro, Edison Artigas Ruf, Albert Pla i Quintana, Anna Roglans i Ribas, Anna Liu, Fang Pérez, Frank Lledó Ponsati, Agustí Zhu, X.Y. Echegoyen, Luis A. 2019 Enhanced open-circuit voltage in perovskite solar cells with open-cage [60]fullerene derivatives as electron-transporting materials Materials 12 8 1314