Photoluminescent properties of yellow emitting Ca1-xEu xSi2O2-N2+2/3 phosphors for white light-emitting diodes

	Photoluminescent properties of yellow emitting Ca1-xEu xSi2O2-N2+2/3 phosphors for white light-emitting diodes
其他题名	论文其他题名
	Wang M.; Zhang J.; Zhang X.; Luo Y.; Ren X.; Lu S.; Liu X.; Wang X.
	2008
发表期刊	Journal of Physics D: Applied Physics
ISSN	223727
卷号	41 期号:20
摘要	Ca1-xEuxSi2O2-N 2+2/3 phosphors with Eu2+ concentration (x) in the range of 0-0.25 are synthesized by solid-state reaction. With increasing x, the energy dispersive spectra show that the O/N ratio increases from 0.54 to 1.43 and the emission and excitation spectra show a redshift due to increased splitting of the low-lying 4f65d1 state of Eu 2+. An additional excitation band appears at around 460 nm for high doping concentrations of Eu2+, perfectly matching the emission wavelength of blue light-emitting diodes (LEDs). The phosphors can be excited in the near-UV to blue region to emit a broad yellow band in the range 543-562 nm, which depends on x. A white LED is fabricated by combining the Ca 0.85Eu0.15Si2O2-N 2+2/3 phosphor with a blue GaN chip. Under 20 mA forward-bias current, a CIE chromaticity coordinate of (0.3396, 0.3474), the corresponding colour temperature (Tc) of 5223 K, the colour rendering index of 74 and luminous efficiency of 20 lm W-1 are obtained. 2008 IOP Publishing Ltd.
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24505
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang M.,Zhang J.,Zhang X.,et al. Photoluminescent properties of yellow emitting Ca1-xEu xSi2O2-N2+2/3 phosphors for white light-emitting diodes[J]. Journal of Physics D: Applied Physics,2008,41(20).
APA	Wang M..,Zhang J..,Zhang X..,Luo Y..,Ren X..,...&Wang X..(2008).Photoluminescent properties of yellow emitting Ca1-xEu xSi2O2-N2+2/3 phosphors for white light-emitting diodes.Journal of Physics D: Applied Physics,41(20).
MLA	Wang M.,et al."Photoluminescent properties of yellow emitting Ca1-xEu xSi2O2-N2+2/3 phosphors for white light-emitting diodes".Journal of Physics D: Applied Physics 41.20(2008).

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