Abstract
In this work, the luminescent properties of blue-emission (Ca/Sr)2P2O7: Eu2+ phosphors prepared by hydrothermal synthesis method are extensively investigated. The Rietveld refinement verified that Eu2+ was successfully doped into the phosphors. The SEM results showed that the samples of Ca2P2O7 and Sr2P2O7 were composed of tetragonal particles and short nanorods particles, respectively. Under ultraviolet excitation, the blue emission peak of the sample had a small full width half maximum (FWHM), with Ca2P2O7 (λem = 417 nm, FWHM = 24 nm), Sr2P2O7 (λem = 420 nm, FWHM = 28 nm). The quantum efficiencies of Ca2P2O7: Eu2+ and Sr2P2O7: Eu2+ were 70.13 % and 69.26 %, respectively. Under the temperature of 480 K, the luminescence intensity of Ca2P2O7: 0.03Eu2+ and Sr2P2O7: 0.03Eu2+ phosphors decreased to 30.02 % and 82.47 % of the initial intensity. Therefore, (Ca/Sr)2P2O7: Eu2+ phosphors with narrow-band blue emission have potential applications in Light emitting diodes and transparent display.
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