基于PbS胶体量子点的化学电阻气体传感器

2018 IEEE SENSORS Pub Date : 2018-10-01 DOI:10.1109/ICSENS.2018.8589724

L. Maiolo, S. Bruno, I. Lucarini, A. Pecora, A. D. Iacovo, L. Colace

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引用次数: 0

摘要

本文研究了硫化铅胶体量子点(CQDs)气体传感器的灵敏度和选择性。与商用散装传感器气体相比，CQDs的优点是表面积/体积比大，工作温度较低，沉积过程简单，尺寸控制精确，可提高传感器灵敏度。该传感器基于化学电阻器件，其有源层由PbS CQDs组成，经配体交换处理沉积在互指金属触点上。在不同的气体污染物(NO2, NO, co2和CO)上验证了传感器的性能，以增加气体浓度和次数。在室温下，该传感器对NO和no2具有较高的选择性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Chemo-Resistive Gas Sensors Based on PbS Colloidal Quantum Dots

In this paper, we investigate the sensitivity and selectivity of lead sulphide colloidal quantum dots (CQDs) gas sensor. The benefits of CQDs, compared to commercial bulk sensor gas, are a large surface/volume ratio, a lower operating temperature, an easy deposition process and a precise control of dimensions to increase sensor sensitivity. The sensor is based on a chemo-resistive device with an active layer composed by PbS CQDs deposited on interdigitated metal contacts with a ligand exchange treatment. The sensor performance are validated on different gas pollutants (NO2, NO, CO2and CO) for increasing gas concentrations and times. The sensor shows high selectivity towards NO and NO2against CO and CO2at room temperature.

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2018 IEEE SENSORS

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