期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 6, 页码 3665-3670出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b00069
关键词
bismuth ferrite; nanofibers; electrospinning; heat treatment; piezoelectric force microscope; photovoltaic; interdigital electrode
资金
- Hong Kong Polytechnic University [A-PK29, A-PL53, G-UC71]
- National Science Foundation of China [NSFC 61274073]
- National 863 Program [2013AA031903]
- Chutian Visiting Scholar Program of Hubei Province of China
Bismuth ferrite (BFO) nanofibers were synthesized via a solgel-based electrospinning process followed by thermal treatment. The influences of processing conditions on the final structure of the samples were investigated. Nanofibers prepared under optimized conditions were found to have a perovskite structure with good quality of crystallization and free of impurity phase. Ferroelectric and piezoelectric responses were obtained from individual nanofiber measured on a piezoelectric force microscope. A prototype photovoltaic device using laterally aligned BFO nanofibers and interdigital electrodes was developed and its performance was examined on a standard photovoltaic system. The BFO nanofibers were found to exhibit an excellent ferroelectric photovoltaic property with the photocurrent several times larger than the literature data obtained on BFO thin films.
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