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首页> 外文期刊>Advanced Functional Materials >Os(II) Based Green to Red Phosphors: A Great Prospect for Solution-Processed, Highly Efficient Organic Light-Emitting Diodes
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Os(II) Based Green to Red Phosphors: A Great Prospect for Solution-Processed, Highly Efficient Organic Light-Emitting Diodes

机译：基于Os（II）的绿色至红色荧光粉：溶液处理，高效有机发光二极管的广阔前景

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摘要

Preparation and characterization of a new class of emissive Os(II) complexes (1-5) have been achieved using 3-(thiazol-2-yl), 3-(benzothiazol-2-yl), 3-(imidazol-2-yl) and 3-(benzimidazol-2-yl) azole chelates, together with the incorporation of one diphosphine ancillary for satisfying the octahedral coordination arrangement. The resulting Os(II) complexes, except for 5, all show bright emission spanning visible region from green to saturated red, and their structural versus spectroscopic properties have been comprehended by absorption/emission together with computational approaches. Subsequently, a series of solution-processed OLEDs using 1-4 as the dopant were successfully fabricated, demonstrating excellent device performances with external quantum efficiency (EQE) of 15%, current efficiency exceeding 48 cd/A, and power conversion efficiency up to 50 Im/W. Complex 4 is the only Os(II) based phosphor so far suitable for the fabrication of highly efficient green-emitting OLEDs.
机译：使用3-（噻唑-2-基），3-（苯并噻唑-2-基），3-（咪唑-2-基）已经完成了新型发光Os（II）配合物（1-5）的制备和表征。 ）和3-（苯并咪唑-2-基）唑螯合物，并加入一种二膦辅助化合物，以满足八面体配位方案。除5外，所得的Os（II）配合物均显示出从绿色到饱和红色的可见光范围，并且吸收/发射及计算方法可理解其结构与光谱性质。随后，成功制造了一系列使用1-4作为掺杂剂的溶液处理的OLED，展示了出色的器件性能，外部量子效率（EQE）为15％，电流效率超过48 cd / A，功率转换效率高达50即时通讯迄今为止，配合物4是唯一适用于制造高效绿色发射OLED的基于Os（II）的荧光粉。

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  • 来源
    《Advanced Functional Materials》 |2012年第16期|p.3491-3499|共9页
  • 作者

    Bo-Sian Du; jia-Ling Liao; Ming-Hong Huang; Cheng-Huei Lin; Hao-Wu Lin; Yun Chi; Hsiao-An Pan; Gang-Lun Fan; Ken-Tsung Wong; Cene-Hsiang Lee; Pi-Tai Chou;

  • 作者单位

    Department of Chemistry National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Chemistry National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Chemistry National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Chemistry National Tsing Hua University Hsinchu 30013, Taiwan;

    Department of Chemistry National Taiwan University Taipei 10617, Taiwan;

    Department of Chemistry National Taiwan University Taipei 10617, Taiwan;

    Department of Chemistry National Taiwan University Taipei 10617, Taiwan;

    Department of Chemistry National Taiwan University Taipei 10617, Taiwan;

    Department of Chemistry National Taiwan University Taipei 10617, Taiwan;

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