Effect of Pb/(Zr+Ti) molar ratio on the photovoltaic properties of lead zirconate-titanate ceramics

被引：37

作者：

Nonaka, K ^{[1
]}

Akiyama, M ^{[1
]}

Hagio, T ^{[1
]}

Takase, A ^{[1
]}

机构：

[1] Kyushu Natl Ind Res Inst, Saga 8410052, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 6-7期

关键词：

photovoltaic properties; sintering; defects; PZT; functional applications;

D O I：

10.1016/S0955-2219(98)00392-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lead zirconate-titanate ceramics having various Pbl (Zr+Ti) molal ratios ranging from 0.90 to 1.01 and a fixed Zr/Ti molar ratio of 50/50 have been sintered at 950-1250 degrees C for 2 h to investigate the change in photovoltaic properties, as well as their grain size dependence on ultraviolet irradiation. The photovoltaic current increased abruptly when the molar ratio was less than 1.00, whereas the photovoltage gave scattered results and decreased between the molar ratio of 0.99 and 1.00, which was caused by grain growth. The maximum output power discernibly increased confirming a net increase in photovoltaic efficiency. The grain size dependence of the photovoltage revealed an opposite tendency in two samples with different molar ratios of 0.992 and 1.00. From these results, it is proposed that creating Pb vacancies on the perovskite lattice is essential for the photovoltaic properties of the samples. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：1143 / 1148

页数：6

共 16 条

[1] HIGH-VOLTAGE PHOTOVOLTAIC EFFECT IN BARIUM-TITANATE AND LEAD TITANATE LEAD ZIRCONATE CERAMICS [J].