• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Photoluminescence properties of a ScBO3:Cr3+ phosphor and its applications for broadband near-infrared LEDs
【24h】

Photoluminescence properties of a ScBO3:Cr3+ phosphor and its applications for broadband near-infrared LEDs

机译：SCBO3：CR3 +磷光体的光致发光性能及其对宽带近红外LED的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The rapid extension of solid state lighting technologies offers the possibility to develop broadband near-infrared (NIR) phosphor-converted LEDs (pc-LEDs) as novel NIR light sources. In this paper, a new NIR-emitting phosphor ScBO3:Cr3+ was synthesized by a high temperature solid state reaction method. Phase structure, spectroscopic properties, luminescent lifetime, quantum yield, emitter concentration influences and thermal quenching behavior of ScBO3: Cr3+, as well as its applications for NIR pc-LEDs, were systematically investigated. ScBO3: Cr3+ phosphors exhibit a broad absorption band ranging from 400 to 530 nm, which matches well with the characteristic emission of the blue LED chip. Moreover, Cr3+ ions occupy the Sc3+ sites with relatively low crystal field strength in the ScBO3 host, and therefore ScBO3: Cr3+ phosphors show intense broadband emission peaking at similar to 800 nm upon excitation at 460 nm, originating from spin-allowed T-4(2) -> (4)A(2) transition of Cr3+ ions. The optimum Cr3+ concentration was determined to be similar to 2 mol% with a quantum yield of similar to 65%. A broadband NIR pc-LED prototype device was fabricated by the combination of ScBO3: Cr3+ phosphors and a blue LED chip, which showed a maximum NIR light output power of similar to 26 mW and a corresponding energy conversion efficiency of similar to 7%. The results indicate the great potential of ScBO3: Cr3+ phosphors for applications in broadband NIR pc-LEDs.
机译：固态照明技术的快速延伸提供了开发宽带近红外（NIR）磷光体转换的LED（PC-LED）作为新型NIR光源的可能性。本文通过高温固态反应方法合成了新的NIR发光磷光体SCO3：Cr3 +。 SCO3：Cr3 +的相结构，光谱性能，发光寿命，量子产率，发射极浓度影响和热猝灭行为，以及其对NIR PC-LED的应用。 SCBO3：CR3 +磷光体表现出从400到530nm的宽吸收带，其与蓝色LED芯片的特征发射相匹配。此外，CR3 +离子占据SC3 +位点，在SCO3宿主中具有相对低的晶场强度，因此SCBO 3：Cr3 +磷光体在460nm的激发时显示出相似的宽带发射峰值，源于800nm，源自旋转允许的T-4（ 2） - >（4）A（2）Cr3 +离子的转变。确定最佳Cr3 +浓度与2mol％相似，其量与65％相似。通过SCBO3：CR3 +磷光体和蓝色LED芯片的组合制造了宽带NIR PC-LED原型设备，该模板显示出最大的NIR光输出功率，类似于26 MW，相应的能量转换效率类似于7％。结果表明了SCBO3：CR3 +荧光粉的巨大潜力，用于宽带NIR PC-LED中的应用。

著录项

  • 来源
    《RSC Advances》 |2018年第22期|共8页
  • 作者

    Shao Qiyue; Ding Hao; Yao Leqi; Xu Junfeng; Liang Chao; Jiang Jianqing;

  • 作者单位

    Southeast Univ Jiangsu Key Lab Adv Metall Mat Sch Mat Sci &

    Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Jiangsu Key Lab Adv Metall Mat Sch Mat Sci &

    Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Jiangsu Key Lab Adv Metall Mat Sch Mat Sci &

    Engn Nanjing 211189 Jiangsu Peoples R China;

    Jiangsu Bree Optron Co Ltd Nanjing 211103 Jiangsu Peoples R China;

    Jiangsu Bree Optron Co Ltd Nanjing 211103 Jiangsu Peoples R China;

    Nanjing Forestry Univ Sch Mat Sci &

    Engn Nanjing 210037 Jiangsu Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号