期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 832, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.154923
关键词
BiFeO3 thin films; PFM; Mott-Schottky; XPS
资金
- CONACYT (Catedras-CONACYT) project [144]
- CONACYT (FOINS CONACYT) [2016-1-2488]
- Guadalajara University (NPTC 2018 project) [UDG-PTC-1397]
- Guadalajara University (PRO-SNI) [248771-2019, 248772-2019]
- Guadalajara University (SEP PRODEP) [511-6/2019.-8428]
Polycrystalline BiFeO3 (BFO) films of different thickness were synthesized by a 2-methoxyethanol (acid)-free simple chemical method. A rhombohedral-type pure phase with a crystallite size less than 18.8 nm was obtained. SEM micrographs showed that BFO has a flat and homogeneous morphology when it was deposited on different semiconductor substrates (ZnO, Ni doped ZnO, and CdS). The highest roughness value (8.6 nm) was observed when BFO was deposited on CdS. The optical response showed that the optical band gap slightly changes as thickness increases. The photovoltaic response of the BFO film was assessed employing different solar cell architectures (p-BFO-n and BFO-n). The results showed that the solar cell based on the Ag/PbS/BFO/CdS/FTO/glass structure presented a short-circuit current density of J(SC) = 239.6 mu A/cm(2) and a power conversion efficiency of eta = 7.65 x 10(-3) %. Photoelectrochemical and ferroelectric measurements were employed to explain the photovoltaic response. (c) 2020 Elsevier B.V. All rights reserved.
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