Photoluminescent properties of yellow emitting ca1-xeuxsi2o2-delta n2+2 delta/3 phosphors for white light-emitting diodes
文献类型：期刊论文
| 作者 | Wang, Meiyuan1,2; Zhang, Jiahua1; Zhang, Xia1; Luo, Yongshi1; Ren, Xinguang1; Lu, Shaozhe1; Liu, Xingren1; Wang, Xiaojun3 |
| 刊名 | Journal of physics d-applied physics
 |
| 出版日期 | 2008-10-21 |
| 卷号 | 41期号:20页码:5 |
| ISSN号 | 0022-3727 |
| DOI | 10.1088/0022-3727/41/20/205103 |
| 通讯作者 | Zhang, jiahua(zhangjh@ciomp.ac.cn) |
| 英文摘要 | Ca1-xeuxsi2o2-delta n2+2 delta/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 4f(6)5d(1) state of eu2+. 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 ca0.85eu0.15si2o2-delta n2+2 delta/3 phosphor with a blue gan chip. under 20ma forward-bias current, a cie chromaticity coordinate of (0.3396, 0.3474), the corresponding colour temperature (t-c) of 5223 k, the colour rendering index of 74 and luminous efficiency of 20 lm w-1 are obtained. |
| WOS关键词 | LED CONVERSION PHOSPHORS ; CA-ALPHA-SIALON ; LUMINESCENCE PROPERTIES ; EMISSION ; SR ; BA |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000260131700021 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2388625 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Jiahua |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA |
| 推荐引用方式 GB/T 7714 | Wang, Meiyuan,Zhang, Jiahua,Zhang, Xia,et al. Photoluminescent properties of yellow emitting ca1-xeuxsi2o2-delta n2+2 delta/3 phosphors for white light-emitting diodes[J]. Journal of physics d-applied physics,2008,41(20):5. |
| APA | Wang, Meiyuan.,Zhang, Jiahua.,Zhang, Xia.,Luo, Yongshi.,Ren, Xinguang.,...&Wang, Xiaojun.(2008).Photoluminescent properties of yellow emitting ca1-xeuxsi2o2-delta n2+2 delta/3 phosphors for white light-emitting diodes.Journal of physics d-applied physics,41(20),5. |
| MLA | Wang, Meiyuan,et al."Photoluminescent properties of yellow emitting ca1-xeuxsi2o2-delta n2+2 delta/3 phosphors for white light-emitting diodes".Journal of physics d-applied physics 41.20(2008):5. |
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来源：中国科学院大学
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