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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2015. V. 18, N 3. P. 334-340.
Determination of the spectral dependence
for the absorption coefficient of phosphor inorganic microparticles
V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine Phone: +38 (044) 525-6168, e-mail: deniskhmil@ukr.net, kamuz_a_m@ukr.net Abstract. Developed in the work has been the mathematical model of the composite film, which enables to calculate the wavelength dependence of the absorption coefficient of microcrystals in the phosphor composition. Also, developed has been a new method for determining the spectrum of the absorption coefficient for microparticles of powder-like materials. Being based on this method, obtained has been the wavelength dependence for the absorption coefficient of microparticles of inorganic phosphor ФЛЖ-7-01. At the emission peak of a blue LED (456 nm) their absorption coefficient is close to 684 cm–1. Keywords: absorption coefficient, phosphor, photoluminophore, light scattering, white LED.
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