1. Ferroelectric and photovoltaic properties of (Ba, Ca)(Ti, Sn, Zr)O3 perovskite ceramics.
- Author
-
Pan, Wen-Yuan, Tang, Yu-Cheng, Yin, Yang, Song, Ai-Zhen, Yu, Jing-Ru, Ye, Sheng, Zhang, Bo-Ping, and Li, Jing-Feng
- Subjects
- *
PEROVSKITE , *PHOTOVOLTAIC effect , *SHORT-circuit currents , *CERAMICS , *BAND gaps , *LEAD titanate - Abstract
Ferroelectric perovskite oxides exhibit the bulk photovoltaic effect, which enables an above-bandgap photovoltage, controllable photocurrent response, and higher efficiencies. Herein, the phase structure, ferroelectric, dielectric, light absorption, and photovoltaic properties in (Ba 0.95 Ca 0.05)(Ti 0.92 Sn 0.08- x Zr x)O 3 (BCTSZ x) ceramics were investigated. All BCTSZ x samples had good ferroelectric properties along with a narrow band gap (E g = 2.53–2.60 eV). A large photovoltaic response under AM 1.5 G simulated sunlight was observed in the poled BCTSZ 0.06 ceramics, in which the maximum short-circuit current (J SC = 3.66 nA cm−2) as well as the highest transient current (J TC = 32.56 nA cm−2) and photocurrent (J PC = 12.63 nA cm−2) were obtained in 500 μm-thick sample negatively poled at 30 kV cm−1. Our results deepen an understanding of the ferroelectric photovoltaic mechanism of perovskite materials and provide a new material for photovoltaic and multifunctional applications. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF