使用ZnO量子点敏化的SnO多孔纳米线的紫外增强型NO传感器

UV-enhanced NOsensor using ZnO quantum dots sensitized SnOporous nanowires.

作者信息

Jiang Tianchen, Liu Xin, Sun Jianbo

机构信息

The Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, People's Republic of China.

College of Science, Harbin University of Science and Technology, Harbin 150080, People's Republic of China.

出版信息

Nanotechnology. 2022 Feb 7;33(18). doi: 10.1088/1361-6528/ac49c1.

DOI:10.1088/1361-6528/ac49c1

PMID:35008071

Abstract

ZnO quantum dots sensitized SnOporous nanowires were fabricated and designed for UV excitation gas sensor. The ZnO/SnOcomposite (SZQ1%) with the molar proportion of 1:100 exhibits excellent sensing properties to NOgas under UV irradiation at 40 °C. The limits of detection of the SZQ1% sensor is 100 ppb. The humidity stability of SZQ1% was also measured and discussed by DC reversed circuit and complex impedance curves. The gas sensing mechanism is well discussed and illustrated to the ZnO quantum dots sensitized and the increased photo-generated carriers under UV irradiation.

摘要

制备了氧化锌量子点敏化的多孔氧化锡纳米线，并将其设计用于紫外激发气体传感器。摩尔比例为1:100的氧化锌/氧化锡复合材料（SZQ1%）在40℃紫外照射下对一氧化氮气体表现出优异的传感性能。SZQ1%传感器的检测限为100 ppb。还通过直流反向电路和复阻抗曲线测量并讨论了SZQ1%的湿度稳定性。对氧化锌量子点敏化以及紫外照射下光生载流子增加的气敏机理进行了充分讨论和阐述。