Synthesis and Photoluminescence Studies of an Orange Red Color Emitting novel CaAl2O4: Sm3+ nanophosphor for LED Applications. (2017) - Shashikala, B.S.
Abstract: A novel CaAl2 O4 : Sm 3+ (1 – 9 mol%) was synthesized by solution combustion method by using ODH as a fuel. The final product was well characterized by PXRD, DRS, SEM, TEM and PL. The PXRD profile of CaAl2 O4 :Sm 3+ well matched with JCPDS NO.172155. The average crystallite sizes are found to be in the range 20 - 40 nm. From Diffuse Reflectance Spectra, the energy gap of the samples were calculated and found to be∼ 2.6 - 3.1 eV. The PL emission peaks centered at∼ 564, 601 and 647