White LED based on CaA2SiO8:Eu2+, Mn2+ phosphor and CdS/ZnS quantum dots
Core/shell CdS/ZnS quantum dots (QDs) with the emission wavelength of 610nm, was synthesized by thermal deposition using cadmium oxide and selenium as precursors in a hot lauric acid and hexadecylamine trioctylphosphine oxide hybrid. CaAl2Si2O8:Eu2+, Mn2+ phosphor was synthesized by high-temperature solid state reaction at 1290 °C for 2 hours under the H2 reducing atmosphere, and X-ray powder diffraction analysis confirmed the formation of it. It has two emission bands peaking at 420 nm and 580nm originated from the transition 5d to 4f of Eu2+ and 4T1-6A1 of Mn2+, respectively. Blends of CaAl2Si2O8:Eu2+,Mn2+ phosphor and CdS/ZnS QDs exhibited the prominent spectral evolution with an increasing content of QDs. A hybrid white LED, which combines a blue LED with the blend of CaAl2Si208:Eu2+, Mn2+ phosphor and QDs with a weight ratio of 2:1, with the CIE coordinate of (0.3183,0.3036) and CRI of 85 was obtained.
Changyu Shen Chuan Zhong Qianglong Hou Ke Li
Institute of Optoelectronic Technology, China Jiliang University, Hangzhou, China
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-4
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）