標題: Novel Eu2+-activated thiogallate phosphors for white LED applications: structural and spectroscopic analysis
作者: Lee, Szu-Ping
Chan, Ting-Shan
Dutta, Somrita
Chen, Teng-Ming
應用化學系
Department of Applied Chemistry
公開日期: 1-Jan-2018
摘要: Novel Eu2+-activated BaGa2SiS6 and Ba2Ga8SiS16 thiogallate phosphors were prepared by solid-state reaction route. The BaGa2SiS6:Eu2+ phosphor generated a green emission upon excitation at 405 nm, whereas the Ba2Ga8SiS16:xEu(2+) phosphor could be tuned from cyan to green range with increasing Eu2+ concentration upon excitation at 365 nm. Additionally, the thermal luminescence properties of the thiogallate phosphors were investigated in the temperature range of 25 to 250 degrees C. A warm-white LED is fabricated using the combination of a 405 nm blue InGaN-based LED chip with the green-emitting BaGa2SiS6:0.01Eu(2+) phosphor, and red-emitting Sr2Si5N8:Eu2+ commercial phosphor with the CRI value of approximate to 88 and the CCT of 4213 K.
URI: http://dx.doi.org/10.1039/c8ra01113c
http://hdl.handle.net/11536/144756
ISSN: 2046-2069
DOI: 10.1039/c8ra01113c
期刊: RSC ADVANCES
Volume: 8
起始頁: 11725
結束頁: 11730
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