Temperature characterization of an optical-chemical tunable-peak sensor using CdSe/ZnS quantum-dots applied on anodized-aluminum for surface temperature measurement

Publication date: November 2017
Source:Sensors and Actuators B: Chemical, Volume 251
Author(s): Steven Claucherty, Hirotaka Sakaue
We have developed a CdSe/ZnS quantum-dot (QD) based anodized-aluminum temperature-sensitive paint (AA-TSP) as a global temperature sensor. Compared to a conventional TSP, which uses a polymer as a supporting matrix, the AA-TSP can provide a narrow full width half maximum (FWHM) that provides a potential to create a multi-color TSP. By using anodized-aluminum as a supporting matrix, the resultant AA-TSP extends the temperature detection range, which is limited by a conventional supporting matrix of a polymer. The temperature calibration shows that a resultant AA-TSP can detect the temperature from 100 to 315K. Six different QDs, whose luminescent peaks are at 481, 518, 543, 555, 587 and 615nm, were chosen for temperature characterization as AA-TSPs, dissolved in toluene. The temperature sensitivity of the resultant AA-TSP ranges from −0.7 to −1.5%/K. With increasing QD diameter, and therefore increasing peak luminescent wavelength, the temperature sensitivity of the AA-TSP increases.



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