Fluorescence Temperature Sensor Based on CdSe/ZnS Core-shell Quantum Dots Thin Film

CHEN Zhong-shi; WANG He-lin; SUI Cheng-hua; WEI Gao-yao; GENG Yan

doi:10.3788/fgxb20143510.1215

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Fluorescence Temperature Sensor Based on CdSe/ZnS Core-shell Quantum Dots Thin Film

更新时间：2020-08-12

- Fluorescence Temperature Sensor Based on CdSe/ZnS Core-shell Quantum Dots Thin Film
- Chinese Journal of Luminescence Vol. 35, Issue 10, Pages: 1215-1220(2014)
- 作者机构：
  
  浙江工业大学理学院应用物理系,浙江杭州,310023
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143510.1215
  CLC： O433.2;O482.31
- Received：07 June 2014，
  
  Revised：10 August 2014，
  
  Published：03 October 2014
- 稿件说明：
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陈中师, 王河林, 隋成华等. 基于CdSe/ZnS核壳量子点薄膜的荧光温度传感器[J]. 发光学报, 2014,35(10): 1215-1220

CHEN Zhong-shi, WANG He-lin, SUI Cheng-hua etc. Fluorescence Temperature Sensor Based on CdSe/ZnS Core-shell Quantum Dots Thin Film[J]. Chinese Journal of Luminescence, 2014,35(10): 1215-1220
陈中师, 王河林, 隋成华等. 基于CdSe/ZnS核壳量子点薄膜的荧光温度传感器[J]. 发光学报, 2014,35(10): 1215-1220 DOI： 10.3788/fgxb20143510.1215.

CHEN Zhong-shi, WANG He-lin, SUI Cheng-hua etc. Fluorescence Temperature Sensor Based on CdSe/ZnS Core-shell Quantum Dots Thin Film[J]. Chinese Journal of Luminescence, 2014,35(10): 1215-1220 DOI： 10.3788/fgxb20143510.1215.

摘要

设计了基于CdSe/ZnS核壳量子点薄膜发光谱温变特性的温度传感器。在30~160 ℃温度范围内，CdSe/ZnS核壳量子点的光致荧光（PL）谱随温度呈现规律性变化。温度升高时，PL谱自参考峰值强度减小、峰值波长增大、半峰全宽增大；而且PL谱自参考峰值强度、峰值波长和半峰全宽温变特性分别非常符合一次、一次和二次拟合函数关系，其对应的相关性指数

均达到96.6%以上；PL谱峰值波长温变灵敏度达到0.06 nm/℃，分辨率约为0.1 ℃。同时，采用PL谱自参考峰值强度比单纯的PL谱峰值强度更具有温度测量稳定性和精确性。

Abstract

A temperature sensor based on the temperature characteristics of photoluminescence (PL) of CdSe/ZnS core-shell quantum dots (QDs) thin film was designed and fabricated. The results show that PL of CdSe/ZnS QDs thin film changes regularly with the temperature increasing in the range of 30~160 ℃. The self-reference peak intensity of PL decreases with the temperature increasing

while their peak wavelength and full width at half maximum (FWHM) increase. Moreover

the temperature characteristics of self-reference peak intensity

peak wavelength

and FWHM are respectively obtained by fitting one

one and two times fitting function relations. The corresponding correlation indexes

are all above 96.6%. The temperature sensitivity of peak wavelength is 0.06 nm/℃

and the resolution is about 0.1 ℃. Besides

the temperature detecting by self-reference peak intensity is more stable and accuracy than that only by peak intensity.

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references

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