Enhancement of photovoltaic properties with Nb modified (Bi, Na) TiO3-BaTiO3 ferroelectric ceramics

被引：29

作者：

Chen, L. ^{[1
]}

Luo, B. C. ^{[1
]}

Chan, N. Y. ^{[2
]}

Dai, J. Y. ^{[2
]}

Hoffman, M. ^{[1
]}

Li, S. ^{[1
]}

Wang, D. Y. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Kensington, NSW 2052, Australia

[2] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 587卷

基金：

澳大利亚研究理事会;

关键词：

BNBT; Ferroelectrics; SPS; Photovoltaic; Doping; MECHANISM; TITANATE;

D O I：

10.1016/j.jallcom.2013.10.207

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the photovoltaic properties of Nb doped (Bi0.5Na0.5) TiO3-xBaTiO(3) (BNBT) ferroelectric ceramics prepared by spark plasma sintering (SPS) were investigated and compared with the conventionally sintered (CS) samples. Much higher photocurrent and photovoltage were observed in SPS samples due to their more compact and homogenous microstructures with smaller grain size. Nb doping increases the photovoltaic response of SPS BNBT ceramics significantly. Optimal photovoltaic response is obtained for 1 at.% Nb doped SPS BNBT ceramics with a large above-bandgap photovoltage, showing the potential in future photovoltaic application. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：339 / 343

页数：5

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