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首页> 外文期刊>Journal of nanoscience and nanotechnology >Effect of Hole Injection Layer/Hole Transport Layer Polymer and Device Structure on the Properties of White OLED
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Effect of Hole Injection Layer/Hole Transport Layer Polymer and Device Structure on the Properties of White OLED

机译：空穴注入层/空穴传输层聚合物及器件结构对白色OLED性能的影响

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摘要

Copolymers containing carbazole and aromatic amine unit were synthesized by using Pd-catalyzed polycondensation reaction. The polymers were characterized in terms of their molecular weight and thermal stability and their UV and PL properties in solution and film state. The band gap energy of the polymers was also determined by the UV absorption and HOMO energy level data. The polymers had high HOMO energy level of 5.19～5.25 eV and work function close to that of ITO. The polymers were thus tested as hole injection/transport layer in the white organic light emitting diodes (OLED) by using 4,4'-bis(2,2-diphenyl-ethen-1-yl)diphenyl (DPVBi) as blue emitting material and 5,6,11,12-tetraphenylnaphthacene (Rubrene) as orange emitting dopant. The synthesized polymer, poly bis[6-bromo-N-(2-ethylhexyl)-carbazole-3-yl] was found to be useful as hole injection layer/hole transport layer (HIL/HTL) multifunctional material with high luminance efficiency and stable white color coordinate in the wide range of applied voltage.
机译：通过钯催化的缩聚反应合成了含有咔唑和芳香胺单元的共聚物。根据聚合物的分子量和热稳定性以及它们在溶液和薄膜状态下的UV和PL特性对其进行表征。聚合物的带隙能也由紫外线吸收和HOMO能级数据确定。该聚合物具有较高的HOMO能级，为5.19〜5.25 eV，其功函数接近ITO。因此，通过使用4,4'-双（2,2-二苯基-乙烯-1-基）二苯基（DPVBi）作为蓝色发光材料，测试了该聚合物在白色有机发光二极管（OLED）中的空穴注入/传输层的性能。和5,6,11,12-四苯基萘（Rubrene）作为橙色发光掺杂剂。发现合成的聚合物，聚双[6-溴-N-（2-乙基己基）-咔唑-3-基]可用作具有高发光效率和高发光效率的空穴注入层/空穴传输层（HIL / HTL）多功能材料。在广泛的施加电压范围内具有稳定的白色坐标。

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