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Properties of Highly Efficient Charge Generation and Transport of Multialternating Organic Heterojunctions and Its Application in Organic Light‐Emitting Diodes
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2018-06-28 , DOI: 10.1002/aelm.201800177 Qingxun Guo 1 , Yanfeng Dai 1 , Qian Sun 1 , Xianfeng Qiao 1 , Jiangshan Chen 1 , Tengfei Zhu 2 , Dongge Ma 1
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2018-06-28 , DOI: 10.1002/aelm.201800177 Qingxun Guo 1 , Yanfeng Dai 1 , Qian Sun 1 , Xianfeng Qiao 1 , Jiangshan Chen 1 , Tengfei Zhu 2 , Dongge Ma 1
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The highly efficient charge generation and transport is realized by simply stacking several 1,4,5,8,9,11‐hexa‐azatriphenylene hexacarbonitrile (HAT‐CN)/4,4′,4″‐tris(N‐3‐methylphenyl‐N‐phenylamino) triph‐enylamine (m‐MTDATA) organic heterojunctions in series. Mechanism analysis confirms that the highly effective charge transport property benefits from the efficient charge generation and recombination processes at the HAT‐CN/m‐MTDATA interfaces. It is found that the efficient multialternating organic heterojunctions can be used not only as hole and electron transporters to supply large charge injection, but also as excellent charge generation layer (CGL) to fabricate high‐performance tandem organic light‐emitting diodes (OLEDs). The resulting red phosphorescent OLEDs by simultaneously using the multialternating organic heterojunctions as hole and electron transporters realize the power efficiency (PE) of 36.7 lm W−1, current efficiency (CE) of 28.0 cd A−1, and external quantum efficiency (EQE) of 15.4%, whereas the PE, CE, and EQE, respectively, reach 37.1 lm W−1, 56.0 cd A−1, and 31.8% when simultaneously using the multialternating organic heterojunctions as hole and electron transporters and CGL to fabricate tandem red phosphorescent OLEDs, indicating the validity of the multialternating organic heterojunctions as the charge generator and transporters. The results provide us a totally new way of fabricating high‐performance OLEDs.
中文翻译：
多种交替有机异质结的高效电荷产生和传输特性及其在有机发光二极管中的应用
通过简单地堆叠几个1,4,5,8,9,11-六氮杂三苯并六甲腈（HAT-CN）/ 4,4'，4''-tris（N -3-甲基苯基）即可实现高效的电荷产生和传输‐ N-苯基氨基）三烯基胺（m-MTDATA）有机异质结串联。机理分析证实，高效的电荷传输特性得益于HAT-CN / m-MTDATA接口上高效的电荷生成和重组过程。发现有效的多交替有机异质结不仅可以用作空穴和电子输运体来提供大量的电荷注入，而且还可以作为优异的电荷产生层（CGL）来制造高性能串联有机发光二极管（OLED）。通过同时使用多种交替有机异质结作为空穴和电子传输体，得到的红色磷光OLED实现了36.7 lm W -1的功率效率（PE ），28.0 cd A -1的电流效率（CE），和外部量子效率为15.4％（EQE），而PE，CE，和EQE分别达到37.1流明w ^ -1，56.0光盘-1，并且当同时使用有机multialternating异质结作为空穴和电子31.8％载流子和CGL来制造串联的红色磷光OLED，这表明多交替有机异质结作为电荷产生器和载流子的有效性。结果为我们提供了一种制造高性能OLED的全新方法。
更新日期：2018-06-28
中文翻译：
多种交替有机异质结的高效电荷产生和传输特性及其在有机发光二极管中的应用
通过简单地堆叠几个1,4,5,8,9,11-六氮杂三苯并六甲腈（HAT-CN）/ 4,4'，4''-tris（N -3-甲基苯基）即可实现高效的电荷产生和传输‐ N-苯基氨基）三烯基胺（m-MTDATA）有机异质结串联。机理分析证实，高效的电荷传输特性得益于HAT-CN / m-MTDATA接口上高效的电荷生成和重组过程。发现有效的多交替有机异质结不仅可以用作空穴和电子输运体来提供大量的电荷注入，而且还可以作为优异的电荷产生层（CGL）来制造高性能串联有机发光二极管（OLED）。通过同时使用多种交替有机异质结作为空穴和电子传输体，得到的红色磷光OLED实现了36.7 lm W -1的功率效率（PE ），28.0 cd A -1的电流效率（CE），和外部量子效率为15.4％（EQE），而PE，CE，和EQE分别达到37.1流明w ^ -1，56.0光盘-1，并且当同时使用有机multialternating异质结作为空穴和电子31.8％载流子和CGL来制造串联的红色磷光OLED，这表明多交替有机异质结作为电荷产生器和载流子的有效性。结果为我们提供了一种制造高性能OLED的全新方法。
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