Tunable green-yellow-red light properties of NaY(WO4)2:Mn2+, Dy3+, Eu3+ phosphors excited with 365 nm LED
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초록
By the solid-state reaction method, the NaY(WO4)2 : Mn2+, Dy3+, Eu3+ phosphors are synthesized successfully. The sample’sphase-structure and morphology have been characterized by XRD and EDS. The concentrations of Mn2+, Dy3+, Eu3+, Y3+ andW6+ are measured by ICP, The result implies that the doped process of Mn2+, Dy3+ and Eu3+ is very easy in host NaY(WO4)2. The absorption and excited spectra are presented, The absorption spectrum of Mn2+ is always broad, but the Dy3+, Eu3+hasrelatively sharp absorption peaks.Using the commercial LED of 365 nm wavelength as the excitation light, the emission spectrawith different doped concentrations ratios of Mn2+ are obtained. The Mn2 + doping reduces the emission intensity of Dy3+,alsoit has meaningful influence on the tunable green-yellow-red LED.The high doped concentration of Mn2+ can guarantee theemission intensity of 546 nm enough.
Abstract
By the solid-state reaction method, the NaY(WO4)2 : Mn2+, Dy3+, Eu3+ phosphors are synthesized successfully. The sample’sphase-structure and morphology have been characterized by XRD and EDS. The concentrations of Mn2+, Dy3+, Eu3+, Y3+ andW6+ are measured by ICP, The result implies that the doped process of Mn2+, Dy3+ and Eu3+ is very easy in host NaY(WO4)2. The absorption and excited spectra are presented, The absorption spectrum of Mn2+ is always broad, but the Dy3+, Eu3+hasrelatively sharp absorption peaks.Using the commercial LED of 365 nm wavelength as the excitation light, the emission spectrawith different doped concentrations ratios of Mn2+ are obtained. The Mn2 + doping reduces the emission intensity of Dy3+,alsoit has meaningful influence on the tunable green-yellow-red LED.The high doped concentration of Mn2+ can guarantee theemission intensity of 546 nm enough.
참고문헌 (26)
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