This article focuses on the effect of monovalent cation doping on the optical properties of rare earth (RE = Eu3+, Tb3+) co‐doped Ca14Zn6Al10O35 which has been synthesized by a low temperature combustion method. Crystalline phase of the Ca14Zn6Al10O35 phosphor was examined and confirmed by X‐ray diffraction measurement. Under near‐ultraviolet light excitation Eu3+‐doped Ca14Zn6Al10O35 phosphor exhibit characterization of Eu3+ emission bands that are located at a maximum wavelength (λmax) of approximately 470 nm and other peaks centred at 593 nm and 615 nm, respectively. With Tb3+‐doped Ca14Zn6Al10O35 phosphor showing a green emission band centred at 544 nm under near‐ultraviolet range. Furthermore, we studied the energy transfer process in Eu3+/Tb3+pair and enhancement in photoluminescence (PL) intensity with doping different charge compensation. Here we obtained the optimum PL emission intensity of the phosphor in broad and intense visible spectral range which may be significant for the fabrication of white light emitting diodes (WLEDs).
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