高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (5): 869-875.doi: 10.7503/cjcu20170608

• 研究论文: 无机化学 • 上一篇    下一篇

六氟磷酸二(2-苯基吡啶)(2,2'-联噻唑)合铱(Ⅲ)的合成及在中性/暖白光二极管中的应用

孙日勇, 陈泽宇, 叶艳春, 陈明先, 唐怀军, 王凯民, 汪正良   

  1. 云南省高校民族地区资源清洁转化重点实验室, 云南民族大学化学与环境学院, 昆明 650500
  • 收稿日期:2017-09-06 出版日期:2018-04-21 发布日期:2018-04-21
  • 作者简介:

    联系人简介: 唐怀军, 男, 博士, 教授, 主要从事有机金属配合物发光材料研究. E-mail: tanghuaijun@sohu.com

  • 基金资助:
    国家自然科学基金(批准号: 21262046, 21261027, 21762049)资助.

Bis(2-phenylpyridine)(2,2'-bithiazole)iridium(Ⅲ) Hexafluorophosphate: Synthesis and Application in Neutral/Warm White Light-emitting Diodes

SUN Riyong, CHEN Zeyu, YE Yanchun, CHEN Mingxian, TANG Huaijun*, WANG Kaimin, WANG Zhengliang   

  1. Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan Province, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, China
  • Received:2017-09-06 Online:2018-04-21 Published:2018-04-21
  • Contact: TANG Huaijun
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21262046, 21261027, 21762049).

摘要:

以IrCl3·3H2O为铱(Ⅲ)源, 2-苯基吡啶(ppy)为主配体, 2,2'-联噻唑(btz)为辅助配体在乙二醇中回流反应后, 再与NH4PF6水溶液进行离子交换反应, 制得新颖橙光阳离子型有机铱(Ⅲ)配合物[(ppy)2Ir·(btz)]PF6. 将其掺杂到硅树脂中用于GaN蓝光(455 nm)芯片激发Y3Al5O12∶Ce3+(YAG∶Ce, 以6.0%质量比掺杂于硅树脂中)构成的白光二极管时, 白光色温明显降低. 未掺杂[(ppy)2Ir(btz)]PF6时, 白光色温为7133 K(冷白光), 效率为137.1 lm/W, 显色指数为79.9, 色坐标为(0.31, 0.31). 当分别掺入1.0%, 1.5%和2.0%的[(ppy)2Ir(btz)]PF6时, 色温依次降为5645 K(冷白光)、 4072 K(中性白光)和3161 K(暖白光), 效率则分别为102.1, 79.1和66.6 lm/W, 显色指数分别为81.9, 77.3和70.0, 色坐标分别为(0.33, 0.31), (0.36, 0.33)和(0.42, 0.38). 实验结果表明, [(ppy)2Ir(btz)]PF6是一种可用于中性/暖白光LEDs的高效橙光材料.

关键词: 阳离子型有机铱(Ⅲ)配合物;, 白光二极管, 光致发光, GaN, YAG∶Ce;

Abstract:

A novel orange cationic organic iridium(Ⅲ) complex, [(ppy)2Ir(btz)]PF6, was synthesized using IrCl3·3H2O as iridium(Ⅲ) source, 2-phenylpyridine(ppy) as main ligand and 2,2'-bithiazole(btz) as auxiliary ligand. After the mixture of aforementioned three compounds was refluxed in glycol for 24 h, an ion exchange reaction was made with an aqueous solution of NH4PF6 for providing target complex. The correlated color temperature(CCT) of white light-emitting diodes(WLEDs) fabricated by 455 nm-emitting blue GaN chip and Y3Al5O12∶Ce3+(YAG∶Ce, 6.0% mass ratio to silicone) obviously declined when the complex was blended in silicone and also used in these WLEDs. Before the complex was used, CCT of the YAG∶Ce-based WLED was 7133 K, the luminous efficiency(ηL) was 137.1 lm/W, the color rendering index(CRI) was 79.9, and the CIE(Commission International de I'Eclairage) value was (0.31, 0.31). When [(ppy)2Ir(btz)]PF6 was used in aforementioned WLEDs at 1.0%, 1.5% and 2.0% blending concentrations, CCT successively decreased to 5645 K(cold white light), 4072 K(neutral white light) and 3161 K(warm white light), the corresponding ηL values were 102.1, 79.1 and 66.6 lm/W, CRI were 81.9, 77.3 and 70.0, CIE values were (0.33, 0.31), (0.36, 0.33) and(0.42, 0.38), respectively. The results show that [(ppy)2Ir(btz)]PF6 is a promising orange phosphor candidate for fabricating efficient neutral/warm WLEDs.

Key words: Cationic organic iridium(Ⅲ) complex;, White light-emitting diode, Photoluminescence, GaN, YAG∶Ce;

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