An efficient green-emitting alpha-Ca1.65Sr0.35SiO4: Eu2+ phosphor for UV/n-UV w-LEDs: synthesis, luminescence and thermal properties
文献类型：期刊论文
| 作者 | Li,Kai; Xu,Ju; Cai,Xuechao; Fan,Jian; Zhang,Yang; Shang,Mengmeng; Lian,Hongzhou; Lin,Jun |
| 刊名 | journal of materials chemistry c
 |
| 出版日期 | 2015 |
| 卷号 | 3期号:24页码:6341-6349 |
| 关键词 | FULL-COLOR BA3MGSI2O8-EU2+ STATE REACTION METHOD ENERGY-TRANSFER SINGLE-PHASE PHOTOLUMINESCENT PROPERTIES CRYSTAL-STRUCTURE MN2+ PHOSPHORS WHITE LEDS DIODES EMISSION |
| 通讯作者 | lin,j |
| 英文摘要 | a series of eu2+ singly doped alpha-ca1.65sr0.35sio4: eu2+ phosphors have been synthesized via the high-temperature solid-state reaction method. x-ray diffraction (xrd), fourier transform infrared (ft-ir) spectroscopy, scanning electron microscopy (sem), diffuse reflectance spectroscopy and photoluminescence (pl) including temperature-dependent pl were used to characterize the as-prepared samples. the xrd patterns and rietveld refinement of the presented sample show the pure phase of the as-prepared samples. all of the phosphors exhibit intense and broad absorption bands in the ultraviolet and near ultraviolet (n-uv) range, and produce bright green emission upon 365 nm uv radiation. the critical concentration of eu2+ for the maximum intensity was determined to be about 1 mol% in alpha-ca1.65sr0.35sio4: eu2+ after optimizing the composition. the energy transfer mechanism between eu2+ was demonstrated to be dipole-dipole interaction. besides, the fluorescence decay curves, the temperature dependent pl and cie value of alpha-ca1.65sr0.35sio4: eu2+ phosphors were investigated. it is reasonable that the decay times of samples decrease with increasing eu2+ content. the cie chromaticity coordinates shift from green (0.197, 0.395) to the border between the green and yellow (0.242, 0.547) region, which agree with the corresponding emission spectra. the maximum quantum yield is 69% for alpha-ca1.65sr0.345sio4:0.005eu(2+). the thermal stability of luminescence of selected alpha-ca1.65sr0.34sio4:0.01eu(2+) was also investigated and compared with that of the commercial green phosphor, which shows its good performance. the above results suggest that it is a good candidate for green-emitting phosphors applied in uv/n-uv pumped w-leds. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000356307800029 |
| 公开日期 | 2016-05-31 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/65103]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li,Kai,Xu,Ju,Cai,Xuechao,et al. An efficient green-emitting alpha-Ca1.65Sr0.35SiO4: Eu2+ phosphor for UV/n-UV w-LEDs: synthesis, luminescence and thermal properties[J]. journal of materials chemistry c,2015,3(24):6341-6349. |
| APA | Li,Kai.,Xu,Ju.,Cai,Xuechao.,Fan,Jian.,Zhang,Yang.,...&Lin,Jun.(2015).An efficient green-emitting alpha-Ca1.65Sr0.35SiO4: Eu2+ phosphor for UV/n-UV w-LEDs: synthesis, luminescence and thermal properties.journal of materials chemistry c,3(24),6341-6349. |
| MLA | Li,Kai,et al."An efficient green-emitting alpha-Ca1.65Sr0.35SiO4: Eu2+ phosphor for UV/n-UV w-LEDs: synthesis, luminescence and thermal properties".journal of materials chemistry c 3.24(2015):6341-6349. |
入库方式： OAI收割
来源：长春应用化学研究所
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