Enhancement and stability of luminescence in thin-film light-emitting devices based on heterostructure of ladder-type poly (p-phenylene)
Enhancement and stability of luminescence in thin-film light-emitting devices based on heterostructure of ladder-type poly (p-phenylene)
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DOI：
10.1016/s1369-8001(02)00053-7
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发表时间：
2002-02-01
影响因子：
4.1
通讯作者：
Cai, CZ
中科院分区：
文献类型：
--
作者：
Wang, SX;Wang, WL;Cai, CZ
制备了微腔薄膜发光器件，该器件使用两个有机材料层，即夹在两个注入电极之间的梯型聚对苯撑（LPPP）和（8-羟基喹啉）铝（Alq（3））。LPPP具有带状的大分子结构，比线性类似物具有更高的热稳定性和化学稳定性。宽的光致发光（PL）和电致发光（EL）发射意味着LPPP可以在整个可见光区进行调谐。LPPP。是发射层和空穴传输器。Alq（3）是电子传递体。对器件的电致发光和光致发光特性的研究表明，通过调节有机发光层的厚度可以实现微腔效应。实验结果表明，定向发射和净发射得到有效增强。用重掺杂金刚石电极代替金属电极铝也能大大提高器件的稳定性。(C)2002年由Elsevier Science Ltd.出版
The microcavity thin-film light-emitting devices were fabricated, which use two organic material layers, ladder-type poly(p-phenylene) (LPPP) and (8-hydroxyquimalin) aluminum (Alq(3)) sandwiched between two injecting electrodes. With the ribbon-type macromolecule structure, the LPPP exhibits higher thermal and chemical stability than its linear analog. The broad photo luminescence (PL) and electroluminescence (EL) emission means LPPP can be tuned over the full visible region. LPPP. was the emitting layer and the cavity transporter. Alq(3) was the electron transporter. The investigation on EL and PL properties of the devices indicated that the microcavity effect has been achieved by adjusting the thickness of organic light-emitting layers. The experimental results showed that directional emission and net emission were efficiently enhanced. The heavily born-doped diamond electrode in place of the metal electrode aluminum can also greatly improve the stability of the devices. (C) 2002 Published by Elsevier Science Ltd.