期刊
INORGANIC CHEMISTRY FRONTIERS
卷 9, 期 24, 页码 6448-6456出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qi01774a
关键词
-
资金
- Natural Science Foundation of China [51702169, 12264036]
- Natural Science Foundation of Inner Mongolia [2021JQ06]
- Scientific and Technological Development Foundation of the Central Guidance Local [2021ZY0008]
- Youth Science and Technology Talents Project of Inner Mongolia [NJYT22061]
- Light of the West talent training program of Chinese Academy of Sciences
By optimizing the macroscopic polarization, ultrahigh photo-detection performances are achieved in hexagonal YbMnO3-based self-powered photodetectors, with high short-circuit current density and enhanced polarization being the key factors contributing to their excellent performance in photo-detection applications.
The use of ferroelectric materials is believed to be a viable way to construct self-powered photodetectors based on the ferroelectric photovoltaic effect. However, the low photocurrent density of ferroelectric materials is a serious drawback that restricts their photo-detection applications. Herein, ultrahigh photo-detection performances are achieved in hexagonal YbMnO3-based self-powered photodetectors by optimizing the macroscopic polarization. The responsivity (R) and detectivity (D*) can reach 0.18/0.15 A W-1 and 6.73 x 10(11)/5.76 x 10(11) Jones under monochromatic light with a wavelength of 365/700 nm when the YbMnO3 thin film [YbMnO3(1040)] is sintered at 1040 degrees C. These excellent photo-detection performances are attributed to the high short-circuit current density which reaches 10.9 mA cm(-2) under 1 sun illumination. A systematic structure and photo-electric characteristic analysis suggests that the formation of a strong domain and the distortion of the crystal structure lead to an enhanced macroscopic polarization in YbMnO3(1040) without changing the bandgap. The enhanced polarization causes a ripple positive effect, which increases the driving force of photo-generated carrier separation and restrains recombination, leading to a high dissociation efficiency. This work demonstrates that the ferroelectric YbMnO3 thin film has great potential in the photo-detection field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据