Small polymeric nano-dot enhanced pure-white organic light-emitting diode
Small polymeric nano-dot enhanced pure-white organic light-emitting diode
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DOI：
10.1016/j.orgel.2007.11.005
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发表时间：
2008-06
影响因子：
3.2
通讯作者：
J. Jou;Mao-Feng Hsu;Wei-Ben Wang;Chi-Ping Liu;Zhao-Chin Wong;J. Shyue;Chung-Che Chiang
中科院分区：
文献类型：
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作者：
J. Jou;Mao-Feng Hsu;Wei-Ben Wang;Chi-Ping Liu;Zhao-Chin Wong;J. Shyue;Chung-Che Chiang
通过在空穴传输层中引入一种新型的小聚合物纳米点（PND），可以显著提高旋涂磷光纯白光有机发光二极管的发光效率。所得到的器件效率强烈地依赖于所使用的PND的浓度和尺寸。例如，当采用14wt%的8 nm尺寸的PND时，在100cd/m2下得到的功率效率从6.8增加到23.7lm/W，增加了350%。这种改善可能是由于PND上的空穴捕获导致的更好的载流子注入平衡。
Marked efficiency improvement of a spin-coated phosphorescent pure-white organic light-emitting diode was obtained by incorporating a novel small polymeric nano-dot (PND) in the hole-transporting layer. The resultant device efficiency strongly depended on the concentration and size of the PND used. The resultant power efficiency at 100cd/m2, for example, was increased from 6.8 to 23.7lm/W, an increase of 350%, as 14wt% PND of 8nm in size was employed. The improvement may be attributed to a better carrier-injection balance resulted from hole trapping on the PND.