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论文类型：期刊论文

发表时间：2018-06-15

发表刊物：MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING

收录刊物：SCIE、EI

卷号：80

页面范围：174-178

ISSN号：1369-8001

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

摘要：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.