J053011 Development of combined pressure and temperature sensor using PtTFPP and CdSe/ZnS

In pressure-sensitive paint (PSP) measurements, pressure is deduced from the luminescence intensity of PSP. Since the intensity depends not only on pressure but also on temperature, a PSP result has to be compensated by the temperature of a surface to which PSP is applied. In this paper, we propose a novel combined pressure and temperature sensor composed of PSP and TSP dot arrays. PtTFPP and CdSe/ZnS were adopted as PSP and TSP luminophores, respectively. PtTFPP is widely used as PSP luminophore, and CdSe/ZnS has several favorable features as TSP luminophore such as tunable luminescence peak wavelength, narrow full width at half maximum, high quantum yield and broad absorption band. The dot array sensor was fabricated by inkjet printing of the luminophores. We examined its photostability under an illumination light, pressure and temperature sensitivities. Each luminophore is separately arranged in dot array; thus the interaction between both luminophores is prevented. The dot array sensor has pressure sensitivity of 0.62 %/kPa as a pressure sensor, and temperature sensitivity of -0.61%/K as a temperature sensor