Xu Qi, Cheng Li, Meng Leixin, Wang Zhe, Bai Suo, Tian Xiaoqiang, Jia Xiaofeng, Qin Yong
Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology , Lanzhou University , Lanzhou 730000 , China.
School of Advanced Materials and Nanotechnology , Xidian University , Xi'an 710071 , China.
ACS Appl Mater Interfaces. 2019 Jul 24;11(29):26127-26133. doi: 10.1021/acsami.9b09264. Epub 2019 Jul 8.
Response (on/off ratio) is one of the key parameters of ultraviolet (UV) sensors. In this paper, a kind of highly sensitive ZnO UV sensor with highly increased on/off current ratio was designed and developed. Under a weak UV intensity of 0.1 mW/cm, this ultrathin ZnO film-based UV sensor has an on/off current ratio of 1.3 × 10 which is 3 times higher than the record value for ZnO-based UV sensors. In addition, it shows good flexibility and stable UV detection property during the bending process. When bending the sensor to a radius of curvature of about 18.5 mm, the sensor also shows high UV detection performance.
响应（开/关比）是紫外线（UV）传感器的关键参数之一。本文设计并开发了一种具有大幅提高的开/关电流比的高灵敏度ZnO紫外线传感器。在0.1 mW/cm的弱紫外线强度下，这种基于超薄ZnO薄膜的紫外线传感器的开/关电流比为1.3×10，比基于ZnO的紫外线传感器的记录值高出3倍。此外，它在弯曲过程中表现出良好的柔韧性和稳定的紫外线检测性能。当将传感器弯曲到约18.5 mm的曲率半径时，该传感器仍显示出高紫外线检测性能。
