NDLI: Synthesis and optical properties of red / blue-emitting Sr 2 MgSi 2 O 7 : Eu 3 þ / Eu 2 þ phosphors for white LED

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Synthesis and optical properties of red / blue-emitting Sr 2 MgSi 2 O 7 : Eu 3 þ / Eu 2 þ phosphors for white LED

Content Provider	Semantic Scholar
Author	Tâm, Tống Thị Hảo Hung, Nguyen Duy Liên, Nguyễn Thị Kim Kien, Nguyen Duc Trung Huy, Phạm Thành
Copyright Year	2016
Abstract	Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly. In this work, we report the co-precipitation synthesis of red/blue Sr2MgSi2O7:Eu 3þ/Eu2þ phosphors with various Eu doping concentration. The results show that the obtained Sr2MgSi2O7:Eu3þ/Eu2þ phosphors have good crystallinity and emit strong red (Sr2MgSi2O7:Eu3þ) and blue (Sr2MgSi2O7:Eu2þ) emissions under near UV light excitation. The sharp emission peaks at 577, 590, 612, 653, and 701 nm corresponded to the typical D0 / Fj (j 1⁄4 0,1,2,3,4) transitions of Eu3þ, and the blue emission peaking at 460 nm is attributed to the typical 4f65d1-4f7 transition of Eu2þ in the same Sr2MgSi2O7 host lattice. Both phosphors can be well excited in the wavelength range of 260e400 nm where the near UV-LED is well matched. The above results suggest that the Sr2MgSi2O7:Eu3þ/Eu2þ phosphors are promising red/blue-emitting phosphors for the application in near UV pumped phosphorconverted white LEDs. © 2016 Publishing services by Elsevier B.V. on behalf of Vietnam National University, Hanoi. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://repository.vnu.edu.vn/bitstream/VNU_123/58331/1/Synthesis-and-optical-properties-of-red-blue-emitting-Sr2MgSi2O7-Eu3-Eu2-phosphors-for-white-LED_2016_Journal-of-Science-Advanced-Materials-and-Device.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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