|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4765726||1362360||2018||8 صفحه PDF||ندارد||دانلود رایگان|
â¢Gd2(MoO4)3:Yb3+, Ho3+, Tm3+ phosphors were synthesized by sol-gel method.â¢The emission color changes from green to blue and then to pink with the pulse width changing from 100 Î¼s to 2000Â Î¼s.â¢The emission color changes from green to yellow with the pulse frequency adjusting from 200Â Hz to 4000Â Hz.â¢Multi-color and white light were realized under appropriate excitation condition.
The methods of modulating emitting color are greatly important for up-conversion phosphors to broaden their applications, ranging from information storage to surface display. In this paper, the Ho3+/Tm3+/Yb3+ tri-doped Gd2(MoO4)3 phosphors are synthesized by typical sol-gel method. It is found that the phosphors can radiate intense blue (475Â nm), green (542Â nm) and red (660Â nm) up-conversion luminescence under 980Â nm or 915Â nm laser excitation. Especially, the emission color of the phosphors can be tuned from red to lavender by adjusting the excitation power of 980Â nm or 915Â nm continuous lasers. In addition, the up-conversion luminescence is also investigated under the excitation of 980Â nm pulse laser. The emission color varies from green to blue and green to yellow by altering the pulse width and frequency, respectively. Combining the above methods, multi-color and white light are realized, indicating the potential application in dynamic colorful display.
Journal: Dyes and Pigments - Volume 148, January 2018, Pages 298-305