期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 102, 期 6, 页码 3448-3456出版社
WILEY
DOI: 10.1111/jace.16184
关键词
ferroelectric; MPB; PbTiO3; Photovoltaic
资金
- Natural Science Foundation of China [51702317, 51702319, 21577143, 51502289]
- Natural Science Foundation of Fujian Province [2017J05031, 2018I0021]
- Frontier Science Key Project of the Chinese Academy of Sciences [QYZDB-SSW-JSC027]
Dense Bi(Ni2/3Ta1/3)O-3-PbTiO3 (BNT-PT) ceramics were prepared by solid-state reaction method. Morphotropic phase boundary between tetragonal and rhombohedral phase was observed around the composition 0.38BNT-0.62PT, at which large photovoltages of 13.2V were obtained under 405nm laser illumination with power density of 200mW/cm(2). By B-site Ni2+ ions doping, the bandgap values of BNT-PT solid solutions were reduced to 2.25 similar to 1.85eV, and the anomalous photovoltaic response was extended from the ultraviolet region to a wavelength of 550nm at the visible light region.
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