Premium
Anomalous photovoltaic effect in Bi(Ni 2/3 Ta 1/3 )O 3 ‐PbTiO 3 ferroelectric solid solutions
Author(s) -
Pang Dongfang,
Liu Xitao,
He Xiang,
Chen Chen,
Zheng Jing,
Yi Zhiguo
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16184
Subject(s) - materials science , tetragonal crystal system , solid solution , band gap , phase boundary , ferroelectricity , analytical chemistry (journal) , doping , ion , phase (matter) , dielectric , optoelectronics , chemistry , metallurgy , organic chemistry , chromatography
Dense Bi(Ni 2/3 Ta 1/3 )O 3 ‐PbTiO 3 (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 405 nm laser illumination with power density of 200 mW/cm 2 . By B‐site Ni 2+ ions doping, the bandgap values of BNT‐PT solid solutions were reduced to 2.25~1.85 eV, and the anomalous photovoltaic response was extended from the ultraviolet region to a wavelength of 550 nm at the visible light region.