| Autor: |
Zhong, Weiheng, Liu, Yuqing, Huang, Hong, Sun, Zhaojie, Xin, Wei, Liu, Weizhen, Zhao, Xiaolong, Long, Shibing, Xu, Haiyang |
| Zdroj: |
Nano Letters; October 2024, Vol. 24 Issue: 43 p13769-13774, 6p |
| Abstrakt: |
Low-dimensional Ga2O3demonstrates a unique ultraviolet photoresponse and could be used in various electronic and optical systems. However, the low-dimensional Ga2O3photodetector is faced with the challenges of a complex preparation process and poor device performance. In this work, ultrathin Ga2O3layers with ∼7 nm thickness are prepared on quartz rods by UV exposure to liquid gallium. Benefiting from low-density oxygen vacancy defects cured by UV exposure, the low-dimensional Ga2O3photodetector exhibits a high response speed (rise: 64.7 μs; fall: 51.4 μs) and an exceptional linear dynamic range of 120 dB. Furthermore, the photodetector array based on these ultrathin Ga2O3shows an effective trajectory tracking capability by monitoring UV source motion. This work develops a simple preparation method to construct a low-dimensional UV photodetector array with fast response and useful trajectory tracking capability, exhibiting the significance of ultrathin Ga2O3in UV optoelectronics. |
| Databáze: |
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