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PbSe量子点近红外光源的CH4气体检测

邢笑雪 王宪伟 秦宏伍 商微微 马玉静

邢笑雪, 王宪伟, 秦宏伍, 商微微, 马玉静. PbSe量子点近红外光源的CH4气体检测[J]. 中国光学, 2018, 11(4): 662-668. doi: 10.3788/CO.20181104.0662
引用本文: 邢笑雪, 王宪伟, 秦宏伍, 商微微, 马玉静. PbSe量子点近红外光源的CH4气体检测[J]. 中国光学, 2018, 11(4): 662-668. doi: 10.3788/CO.20181104.0662
XING Xiao-xue, WANG Xian-wei, QIN Hong-wu, SHANG Wei-wei, MA Yu-jing. CH4 detection based on near-infrared luminescence of PbSe quantum dots[J]. Chinese Optics, 2018, 11(4): 662-668. doi: 10.3788/CO.20181104.0662
Citation: XING Xiao-xue, WANG Xian-wei, QIN Hong-wu, SHANG Wei-wei, MA Yu-jing. CH4 detection based on near-infrared luminescence of PbSe quantum dots[J]. Chinese Optics, 2018, 11(4): 662-668. doi: 10.3788/CO.20181104.0662

PbSe量子点近红外光源的CH4气体检测

doi: 10.3788/CO.20181104.0662
基金项目: 

国家自然科学基金项目 No.61675086

吉林省科技厅科技计划项目 No.2016LY402L01

详细信息
    作者简介:

    邢笑雪(1981-), 女, 山西霍州人, 博士, 讲师, 2006年于华侨大学获得硕士学位, 2014年于吉林大学获得博士学位, 现为长春大学电子信息工程学院讲师, 主要从事光电检测及智能系统方面的研究。E-mail:xiaoxue8184@126.com

    秦宏伍(1976-), 男, 吉林大安人, 副教授, 2011年于俄联邦太平洋国立技术大学获得工学博士学位。主要从事智能系统, 红外气体检测、系统状态监测与故障诊断、振动噪声与控制、声发射源定位与信息处理等方面的研究。E-mail:qinhongwu@ccu.edu.cn

  • 中图分类号: TN214

CH4 detection based on near-infrared luminescence of PbSe quantum dots

Funds: 

National Natural Science Foundation of China No.61675086

Science and Technology Plan Project of Jilin Provincial Science and Technology Department No.2016LY402L01

More Information
  • 摘要: 研制了一种新型的PbSe量子点近红外光源,其光致发光谱较窄,能有效匹配气体的红外吸收峰。采用配位溶剂法合成出5.1 nm的PbSe量子点,并将其沉积到GaN芯片上(沉积厚度为165.5 μm),经过紫外光照处理和固化后制成了光致发光的近红外光源。该光源第一激子吸收峰位于1 592 nm,光致发光峰位于1 665 nm,其发射光谱包含了1 625~1 840 nm之间的CH4气体的全部的吸收谱。利用其进行CH4气体浓度检测实验,结果表明,系统的检测下限可以达到100×10-6,检测误差为2%。这种由PbSe量子点近红外光源构成的新型检测系统具有低功耗、低成本和高效能等优点,将其应用在气体检测中时可以略去滤光片,其在红外气体检测领域中有着较广阔的应用前景。
  • 图  1  PbSe量子点光在透射电镜下的形貌

    Figure  1.  TEM image of PbSe QDs

    图  2  5.1 nm PbSe QDs的发光谱和CH4的吸收谱线对比图

    Figure  2.  Comparison diagram of PL spectra of 5.1 nm PbSe QDs and absorption spectra of CH4

    图  3  5.1 nm PbSe量子点吸收谱线

    Figure  3.  Normalized absorption spectrum of 5.1 nm PbSe QDs

    图  4  PbSe量子点近红外光源的制作过程

    Figure  4.  Fabrication process of NIR PbSe QDs light source

    图  5  PbSe量子点近红外光源发光强度随偏置电压变化曲线

    Figure  5.  Curves of light intensity of NIR PbSe QDs light source vesus working bias voltage

    图  6  CH4气体检测系统基本原理框图

    Figure  6.  Schematic illustration of CH4 detection system

    图  7  PbSe量子点近红外光源经过CH4吸收后的发光谱线

    Figure  7.  PL spectra of NIR PbSe QDs light source after absorbed by CH4 with different concentrations

    图  8  PbSe QDs的发光谱与H2O和CO2吸收谱线对比图

    Figure  8.  Comparison diagram of PL spectra of PbSe QDs and absorption lines of H2O and CO2

    图  9  输出电压相对值随CH4浓度变化拟合曲线

    Figure  9.  Fitted curve of relative value of output voltage at different CH4 concentrations

    图  10  测量CH4浓度与标准CH4浓度对比

    Figure  10.  Comparison between standard and measured concentration of CH4

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出版历程
  • 收稿日期:  2017-11-01
  • 修回日期:  2018-02-09
  • 刊出日期:  2018-08-01

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