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3 October 1996 Blue light-emitting diodes from polymer blends
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Electroluminescence (EL) is reported from a novel polymer blend of poly(2,5-dibutoxyphenylene) (PPP) and polymer poly(N-vinylcarbazole) (PVK). Since PPP and PVK are soluble in common organic solvents, light-emitting diodes (LEDs) can be fabricated by spin-coating films of the polymer blends from solution without subsequent processing or heat treatment. Indium-tin-oxide (ITO) and aluminum (Al) are used as the hole-injection and electron-injection electrodes, respectively. Blue light emission is observed at about 8 V and have a peak emission wavelength at 448 nm at room temperature. The EL efficiency is about 0.82%, which is greater than.that of pure PPP by approximately one order of magnitude.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jingsong Huang, Haiyan An, Jingying Hou, Baijun Chen, Shiyong Liu, Haifeng Zhang, Wenjing Tian, and Jiachong Shen "Blue light-emitting diodes from polymer blends", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996);

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