Abstract

In this work, the (1−x)Bi0.5Na0.5TiO3-xBaNi0.5Nb0.5O3 (BNT-BNN; 0.00 ⩽ x ⩽ 0.20) ceramics were prepared via a high-temperature solid-state method. The crystalline structures, photovoltaic effect, and electrical properties of the ceramics were investigated. According to X-ray diffraction, the system shows a single perovskite structure. The samples show the normal ferroelectric loops. With the increase of BNN content, the remnant polarization (Pr) and coercive field (Ec) decrease gradually. The optical band gap of the samples narrows from 3.10 to 2.27 eV. The conductive species of grains and grain boundaries in the ceramics are ascribed to the double ionized oxygen vacancies. The open-circuit voltage (Voc) of ∼15.7 V and short-circuit current (Jsc) of ∼1450 nA/cm2 are obtained in the 0.95BNT-0.05BNN ceramic under 1 sun illumination (AM1.5G, 100 mW/cm2). A larger Voc of 23 V and a higher Jsc of 5500 nA/cm2 are achieved at the poling field of 60 kV/cm under the same light conditions. The study shows this system has great application prospects in the photovoltaic field.

Details

Title
Photocurrent density and electrical properties of Bi0.5Na0.5TiO3-BaNi0.5Nb0.5O3 ceramics
Author
Zhong Mingqiang 1 ; Qin, Feng 2 ; Yuan Changlai 1 ; Liu, Xiao 1 ; Zhu, Baohua 3 ; Meng Liufang 3 ; Zhou Changrong 1 ; Xu, Jiwen 1 ; Wang, Jiang 1 ; Rao, Guanghui 4 

 Guilin University of Electronic Technology, Guangxi Key Laboratory of Information Materials, Guilin, China (GRID:grid.440723.6) (ISNI:0000 0001 0807 124X); Guilin University of Electronic Technology, College of Material Science and Engineering, Guilin, China (GRID:grid.440723.6) (ISNI:0000 0001 0807 124X) 
 Guangxi University, School of Resources, Environment and Materials, Nanning, China (GRID:grid.256609.e) (ISNI:0000 0001 2254 5798) 
 Guilin University of Electronic Technology, College of Material Science and Engineering, Guilin, China (GRID:grid.440723.6) (ISNI:0000 0001 0807 124X) 
 Guilin University of Electronic Technology, Guangxi Key Laboratory of Information Materials, Guilin, China (GRID:grid.440723.6) (ISNI:0000 0001 0807 124X); Guilin University of Electronic Technology, College of Material Science and Engineering, Guilin, China (GRID:grid.440723.6) (ISNI:0000 0001 0807 124X); Chinese Academy of Sciences, Institute of Physics, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
Pages
1119-1128
Publication year
2021
Publication date
Oct 2021
Publisher
Tsinghua University Press
ISSN
22264108
e-ISSN
22278508
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2580808162
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.