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Indexed by:期刊论文

Date of Publication:2018-06-15

Journal:MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING

Included Journals:SCIE、EI

Volume:80

Page Number:174-178

ISSN No.:1369-8001

Key Words:Perovskite solar cells; Perovskite light emitting diode; Time-resolved electroluminescence; SnO2 electron transport layer

Abstract:Metal halide perovskites are emerging as exceptional class of materials due to its unprecedented collective advantages for optoelectronic applications. Here, the efficient mesoscopic perovskite solar cells (M-PSCs) with the architecture of FTO-SnO2/m-TiO2 + MAPbI(3)/Spiro-OMeTAD/Ag were synthesized, where the discontinuous SnO2 derived blended-interfacial-layer worked as electron transport layer (ETL). A moderate power conversion efficiencies (PCEs) of 17.42% was achieved. Notably, a 10 s level ultra-long rise time in time-resolved electro-luminescence (EL) characteristics was observed from the same device as the MAPbI(3) perovskite layer served as light emitter. Such performance was attributed to the reasonable device design based on the dynamics favorable electron transport layer. This achievement would be beneficial for further understanding the working mechanism of perovskite-based optical-to-electrical and electrical-to-optical conversion devices.