基于ZnS:Eu^(2+)气敏薄膜的荧光猝灭型硫化氢气体传感器研究  

Study on H_2S Gas Sensor Based on Fluorescence Quenching of ZnS: Eu^(2+) Gas-Sensitive Film

作　　者：赵芬[1] 江中伟 冯文林[1,2] 王柯[1] 冯序 

机构地区：[1]重庆理工大学光电信息学院,重庆400054 [2]现代光电检测技术与仪器重庆市重点实验室,重庆400054

出　　处：《光学学报》2015年第9期184-190,共7页Acta Optica Sinica

基　　金：国家自然科学基金(51304260);教育部重点科技项目(212139);重庆市科委自然科学基金(cstc2012jj A40057)

摘　　要：采用超声辅助水热/溶剂热生长法制备了高质量ZnS:Eu2+光学气敏材料,搭建了一套由ZnS:Eu2+气敏薄膜、简易气室、微型光纤光谱仪及配套软件构成的气体传感器用以检测H2S气体浓度,该传感器稳定性好,抗干扰能力强。采用荧光猝灭原理Stern-Volmer方程发现,被测H2S气体浓度与敏感元件荧光猝灭信号呈线性对应关系,传感器响应快,可实现对低浓度H2S气体的高灵敏度检测。High quality ZnS： Eu2. gas-sensitive materials have been synthesized by the ultrasound assisted hydrothermal/solvothermal method, and a gas sensor which contains ZnS： Eu2＋ gas-sensitive film, simple chamber, miniature fiber optic spectrometer as well as the supporting software has been put forward. The gas sensor has good stability and strong anti-jamming capability. It is found that the H2S gas concentration and the sensitive component＇ s fluorescence quenching signal correspond to linear relationship via fluorescence quenching Stern-Volmer equation, which indicates that the gas sensor responds quickly and can be used for high sensitivity real-time online monitoring of H2S gas concentration.

关 键 词：探测器 荧光猝灭 气体传感器 气敏薄膜 ZnS:Eu2+ 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]