Luminescent high temperature sensor based on the CdSe/ZnS quantum dot thin film

作者：WANG He lin; YANG Ai jun; SUI Cheng hua; College of Science Zhejiang University of Technology

来源：Optoelectronics Letters, 2013, (06): 421-424.

• CdSe
• exponentially
• FWHM
• exciton
• phonon
• linearly
• hollow
• inhomogeneous
• CdTe
• semicon

A high temperature sensor based on the multi-parameter temperature dependent characteristic of photoluminescence(PL)of quantum dot(QD)thin film is demonstrated by depositing the CdSe/ZnS core/shell QDs on the SiO2 glass substrates.The variations of the intensity,the peak wavelength and the full width at half maximum(FWHM)of PL spectra with temperature are studied experimentally and theoretically.The results indicate that the peak wavelength of the PL spectra changes linearly with temperature,while the PL intensity and FWHM vary exponentially for the temperature range from 30℃ to 180℃.Using the obtained temperature dependent optical parameters,the resolution of the designed sensor can reach 0.1 nm/℃.

• 出版日期2013-11-1
• 单位浙江大学