Articles - Sol-gel derived blue-emitting Sr3MgSi2O8:Eu2+ oxide phosphor for ultraviolet emitting diodes
- Seung Hwangboa, Young-Sun Jeonb, Bo-An Kangb, Yu-Sang Kimc, Kyu-Seog Hwangb and Jin-Tae Kimd,*
- a Department of Electronic & Photonic Engineering, Honam University, 59-1 Seobong-dong, Gwangsan-gu, Gwangju 506-714, Korea b Department of Biomedical Engineering and Institute of Photoelectronic Technology, Nambu University, 864-1 wolgye-dong, Gwangsan-gu, Gwangju 506-824, Korea c Korea Institute of Science and Technology Information, 66 Hoegiro, Dongdaemun-gu, Seoul 130-741, Korea d Department of Photonic Engineering, College of Engineering, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Korea
Abstract
Blue-emitting divalent europium-activated strontium magnesium orthosilicate (Sr3MgSi2O8 : Eu2+) oxide phosphor was synthesized through a low-temperature chemical solution process using tetraethyl orthosilicate and inorganic salts as starting materials. The transparent sol was preheated at 300 degrees C for 120 minutes and then the precursor was finally annealed at 900 degrees C for 240 minutes. Crystallinity, surface morphology and luminescent properties have been investigated. The phosphor emits blue luminescence with a peak wavelength at 457 nm under near-ultraviolet excitation at 365 nm.
Keywords: Sr3MgSi2O8 : Eu2+; phosphor; blue
This Article
Copyright 2019 International Orgranization for Ceramic Processing. All rights reserved.Clean-Energy Research Institute(CRI), Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
E-mail: jcpr@hanyang.ac.kr