Eu2+-activated blue-emitting glass phosphor derived from Eu3+ exchanged USY zeolites by thermal treatment in reducing atmosphere

doi:10.1016/j.ceramint.2018.07.198

	Eu2+-activated blue-emitting glass phosphor derived from Eu3+ exchanged USY zeolites by thermal treatment in reducing atmosphere
	Gao, Changda; Lin, Hui; Zhang, Dawei; Hong, Ruijin; Tao, Chunxian; Han, Zhaoxia
刊名	Ceramics International
	2018
卷号	44 期号:16 页码:19547-19553
ISSN号	02728842
DOI	10.1016/j.ceramint.2018.07.198
英文摘要	In this work, we report a facile method to prepare Eu2+ activated blue-emitting glass phosphor via loading Eu3+ into USY (Na28Si168Al28O384·240H2O, Si/Al ratio=6) zeolites’ cavities followed by thermal treatment in reducing atmosphere. The zeolites powders containing Eu3+ were treated at different temperatures from 800 °C to 1200 °C in flowing 5%H2 + 95%N2 ambient. The photoluminescence properties were investigated on aspects of the emission and excitation spectra, internal quantum efficiency (IQE), thermal stability and the fluorescence lifetime. The XRD patterns showed that the sample calcined at 950 °C was of pure glassy state. Under the broad 200–430 nm excitation, a strong blue emission band peaked at 451 nm with a full width of half maximum (FWHM) value of 74 nm was observed for this sample. Under the 365 nm excitation, the samples treated at different temperatures showed monotone red shift in the emission peak wavelengths with the thermal treatment temperature increasing. Transparent glass sheets were obtained from the glass phosphor powders by spark plasma sintering (SPS) at 1200 °C, 1250 °C and 1300 °C. The optical transmittance and thermal conductivity of transparent glass sheets were measured. The results indicated that this glass phosphor may be a potential candidate material for white LEDs. © 2018 Elsevier Ltd and Techna Group S.r.l.
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25164]
专题	中国科学院上海硅酸盐研究所
作者单位	Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No. 516 Jun Gong Road, Shanghai; 200093, China
推荐引用方式 GB/T 7714	Gao, Changda,Lin, Hui,Zhang, Dawei,et al. Eu2+-activated blue-emitting glass phosphor derived from Eu3+ exchanged USY zeolites by thermal treatment in reducing atmosphere[J]. Ceramics International,2018,44(16):19547-19553.
APA	Gao, Changda,Lin, Hui,Zhang, Dawei,Hong, Ruijin,Tao, Chunxian,&Han, Zhaoxia.(2018).Eu2+-activated blue-emitting glass phosphor derived from Eu3+ exchanged USY zeolites by thermal treatment in reducing atmosphere.Ceramics International,44(16),19547-19553.
MLA	Gao, Changda,et al."Eu2+-activated blue-emitting glass phosphor derived from Eu3+ exchanged USY zeolites by thermal treatment in reducing atmosphere".Ceramics International 44.16(2018):19547-19553.