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dc.contributor.authorUpama, M.
dc.contributor.authorElumalai, Naveen Kumar
dc.contributor.authorMahmud, M.
dc.contributor.authorWang, D.
dc.contributor.authorHaque, F.
dc.contributor.authorGonçales, V.
dc.contributor.authorGooding, J.
dc.contributor.authorWright, M.
dc.contributor.authorXu, C.
dc.contributor.authorUddin, A.
dc.identifier.citationUpama, M. and Elumalai, N.K. and Mahmud, M. and Wang, D. and Haque, F. and Gonçales, V. and Gooding, J. et al. 2017. Role of fullerene electron transport layer on the morphology and optoelectronic properties of perovskite solar cells. Organic Electronics: physics, materials, applications. 50: pp. 279-289.

High performance, hysteresis-free, low temperature n-i-p perovskite solar cells are successfully fabricated by solution processing using fullerene electron transport layer (ETL). PC71BM fullerene, with broader absorption spectrum and lower HOMO level, when incorporated in the perovskite solar cell yielded average power conversion efficiency (PCE) of 13.9%. This is the highest reported PCE in n-i-p perovskite solar cells with PC71BM ETL. The devices exhibited negligible hysteresis and high open-circuit voltage (Voc). On the contrary, devices with PC61BM, a common fullerene ETL in perovskite solar cell, exhibited large hysteresis and lower Voc. The underlying mechanisms of superior performance of devices with PC71BM ETL were found to be correlated with fullerene surface wettability and perovskite grain size. The influence of fullerene ETL on the perovskite grain growth and subsequent photovoltaic performance was investigated by contact angle measurement, morphological characterization of the surface topography and electrochemical impedance analysis.

dc.titleRole of fullerene electron transport layer on the morphology and optoelectronic properties of perovskite solar cells
dc.typeJournal Article
dcterms.source.titleOrganic Electronics: physics, materials, applications
curtin.accessStatusFulltext not available

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