A Study on Emission Wavelength Control of Red Sr2Si5N8:Eu2+ Phosphor

Wunho Lee¹, Kwangwon Park², Wontae Jang², Taewook Kang³, Sangnam Lee⁴

¹Department of LED Convergence Engineering, Pukyong National University, Busan, 48547, Korea
²Department of Display Engineering, Pukyong National University, Busan, 48513, Korea
³Interdisciplinary Program of LED and Solid State Lighting Engineering, Pukyong National University, Busan, 48547, Korea
⁴Department of Graphic Arts Information Engineering, Pukyong National University, Busan, 48547, Korea

^*E-mail : snl530202@gmail.com

Abstract

Eu2+-doped nitride phosphor, Sr2Si5N8:Eu2+, was prepared by the carbothermal reduction and nitridation method. Lattice structure is observed by the X-Ray diffractometer. Absorption band peaking at 470 nm is observed by the photoluminescence exitation measurement. The Sr2Si5N8:Eu2+ phosphor is excited at blue lights in the range of 450 - 470 nm that matches with the InGaN-LEDs. The emission peak position of (Sr1-xEux)2Si5N8 phosphor obtained from 628 to 670 nm with increasing Eu2+ ion concentartion. (Sr1-xEux)2Si5N8 phosphor apply to the blue LED with Y3Al5O12:Ce3+ phosphor which obtained white light of high color rendreing index.

적색 Sr2Si5N8:Eu2+ 형광체의 발광 파장 제어에 대한 연구

A Study on Emission Wavelength Control of Red Sr2Si5N8:Eu2+ Phosphor

Abstract

적색 Sr2Si5N8:Eu2+ 형광체의 발광 파장 제어에 대한 연구

초록

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