Thickness Dependence of Photovoltaic Effect in BiFeO 3 Thin Films Based on Asymmetric Structures
作者: Rongli GaoChunling FuWei CaiGang ChenXiaoling DengXianlong Cao
作者单位: 1School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology
2Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices
刊名: Journal of Electronic Materials, 2017, Vol.46 (4), pp.2373-2378
来源数据库: Springer Journal
DOI: 10.1007/s11664-017-5292-4
关键词: BiFeO 3 filmsenhancementnonuniform fieldthicknessphotovoltaic effect
英文摘要: Abstract(#br)BiFeO 3 (BFO) thin films with different layers were deposited on Pt/Ti/SiO 2 /Si substrates via the sol–gel method, and the effect of nonuniform electric field formed by asymmetry electrodes on the photovoltaic properties has been investigated through experimental approaches. The Au/BFO/Pt heterostructures show 1.3 V open-circuit voltages and ∼0.242% photovoltaic power conversion efficiency when illuminated under sunlight (AM 1.5), this high efficiency is at least one order of magnitude larger than many other values thus far reported for BFO-based devices prepared by the spin coated method. The film layer dependence of the photovoltaic effect suggests that the large open-circuit voltage and high efficiency are contributed by both the ferroelectric polarization and the...
全文获取路径: Springer  (合作)
影响因子:1.635 (2012)