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18 February 2009 Thermal diffusivity of light-emitting material determination by photoacoustic piezoelectric technique
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Abstract
The theory of Photoacoustic Piezoelectric (PAPE) technique has been developed for two-layered model. An analytical expression for the phase of output voltage versus modulation frequency has been obtained. The thermal diffusivity of Phosphor/PVA light-emitting composite material has been studied. PAPE technique has been employed successfully for investigating the thermal diffusivity of two-layered materials.
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Qiming Sun, Chunming Gao, Binxing Zhao, and Haibo Rao "Thermal diffusivity of light-emitting material determination by photoacoustic piezoelectric technique", Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72761N (18 February 2009); https://doi.org/10.1117/12.823910
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