A self-powered flexible UV-visible photodetector with high photosensitivity based on BiFeO₃/XTiO₃ (Sr, Zn, Pb) multilayer films

Abstract

Ferroelectric-based photodetector has attracted much attention due to the suitable bandgap and unrestricted photovoltage. However, the low photocurrent, responsivity, and detectivity are still a big challenge. Herein, the BiFeO3/XTiO3 (X=Sr,...

Ultrahigh-performance self-powered photodetectors based on hexagonal YbMnO3 ferroelectric thin films by the polarization-induced ripple effect

“…Based on the holistic photo-detection performances, the YbMnO 3 (1040) photodetector is superior to other ferroelectric photodetectors. 20,[34][35][36][37][38][39][40][41][42][43][44][45][46][47] Therefore, the YbMnO 3 (1040) photodetector exhibits great potential as a high-efficiency selfpowered photo-detection material.…”

Recent Advances in Ferroelectric Materials-Based Photoelectrochemical Reaction

“…Except for normally semiconductor materials, BiFeO 3 constantly be combined with other type ferroelectrics, such as LaNiO 3 [ 71 ], XTiO 3 (X = Sr, Zn, Pb) [ 72 ], BiVO 3 [ 73 ] et al, which act as the buffer layer used to obtain high-quality BFO thin film to improve the related properties. Han et al [ 71 ] synthesized BFO photocathode by introducing a thin LaNiO 3 (LNO) film to improve the PEC H 2 O 2 production.…”

“…As a result, the researchers obtained excellent H 2 O 2 production of 278 µmol/L, with doubled faradic efficiency, due to rich carrier collections and kinetics. Zhao Yu et al [ 72 ] designed BiFeO 3 /XTiO 3 (X = Sr, Zn, Pb) multilayer films on the LaNiO 3 substrate and acquired ingenious photodetection of UV-visible light on account of the advantages of broaden UV absorption of XTiO 3 , enhanced electric field of the heterojunction and powerful built-in electric field of BiFeO 3 . The AEM images of BFO/ST film, BFO/ZT film, and BFO/PT film were present on Figure 5 a–c.…”

Narrow Bandgap Inorganic Ferroelectric Thin Film Materials

“…Photodetector (PD) has a wide range of applications (optical communication, sensing, military), and can be designed into various functional devices such as flame detection, missile warning, electronic logic gate operation, and remote control. [ 2,174–176 ] Functional broad‐spectrum detection range and self‐driven devices are currently popular research directions and have a significant application value. Traditional photodetectors are mainly made of GaN, ZnO, SiC, SnO 2 , and other materials.…”

“…designed a self‐powered flexible photodetector (SF‐PD) with high optical sensitivity on the basis of the BiFeO 3 /XTiO 3 (Sr, Zn, Pb) multilayer films, which has rapid response speed and high detectivity. [ 175 ] Swain et al. fabricated a polarization controlled photovoltaic and self‐powered photodetector based on BZT‐BCT (0.5Ba(Zr 0.2 Ti 0.8 )O 3 –0.5(Ba 0.7 Ca 0.3 )TiO 3 ) thin film materials.…”