標題: | Novel Reddish-Orange-Emitting BaLa2Si2S8:Eu2+ Thiosilicate Phosphor for LED Lighting |
作者: | Lee, Szu-Ping Chan, Ting-Shan Chen, Teng-Ming 應用化學系 應用化學系分子科學碩博班 Department of Applied Chemistry Institute of Molecular science |
關鍵字: | photoluminescence;thiosilicate phosphor;LED lighting |
公開日期: | 14-一月-2015 |
摘要: | A novel reddish-orange-emitting BaLa2Si2S8:Eu2+ thiosilicate was prepared in a sealed fused silica ampule and its crystal structure was refined using Rietveld methods. The BaLa2Si2S8:Eu2+ phosphor is excitable over a broad range from UV to blue (350-450 nm) and generated a reddish-orange broadband emission peaking at 645 nm with a quantum efficiency of similar to 24%. The thermal luminescence quenching of BaLa2Si2S8:Eu2+ was investigated over the range 25 to 150 degrees C. This phosphor was utilized to incorporate with two commercially available phosphors, blue BaMgAl10O17:Eu2+ and green (Ba,Sr)(2)SiO4:Eu2+, and a near-UV LED chip (405 nm), a white light with Ra of similar to 94 was obtained. |
URI: | http://dx.doi.org/10.1021/am505613s http://hdl.handle.net/11536/124379 |
ISSN: | 1944-8244 |
DOI: | 10.1021/am505613s |
期刊: | ACS APPLIED MATERIALS & INTERFACES |
起始頁: | 40 |
結束頁: | 44 |
顯示於類別: | 期刊論文 |