کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1459565 | 989595 | 2016 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation on luminescence properties of emission-tunable Ba9Y2Si6O24:Tb3+, Mn2+ phosphors Investigation on luminescence properties of emission-tunable Ba9Y2Si6O24:Tb3+, Mn2+ phosphors](/preview/png/1459565.png)
A series of emission-tunable Ba9Y2Si6O24:Tb3+, Mn2+ (BYS:Tb3+, Mn2+) phosphors were prepared by a solid-state reaction method, and their luminescence properties upon ultraviolet light excitation were studied. The characteristic 5D4–7FJ emissions of Tb3+ are observed in BYS:0.6Tb3+ upon 300 nm excitation. By codoping Tb3+–Mn2+ into the BYS host, tunable emission is realized in BYS:0.6Tb3+, yMn2+ (0≤y≤0.5), ranging from yellowish green to orange. The energy transfer (ET) from Tb3+ to Mn2+ is verified by the decay curves and the ET efficiencies are valuated from the changing decay lifetimes. By further adjusting the relative concentrations of Tb3+ and Mn2+, nearly white light is obtained finally in the BYS:0.05Tb3+, 0.1Mn2+ sample. The above investigations indicate the as-prepared BYS:Tb3+, Mn2+ phosphors could have potential applications in UV-LEDs.
Journal: Ceramics International - Volume 42, Issue 2, Part B, 1 February 2016, Pages 3437–3441