3 October 1996 Bright blue electroluminescence from Poly(N-vinylcarbazole) doped with two dyes
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Abstract
Electroluminescent (EL) devices were fabricated using Poly(N-vinylcarbazole) (PVK) doped with two high fluorescence blue dyes, 1,1,4,4-Tetraphenyl-1,3-butadiene (TPB) and 2,5-Bis(5-tert-buty 1-2-benzoxazoly) thiophene (BBOT) as an emitting layer, a layer of tris(8-quinolinolato aluminum (III) (Alq3) as an electron-transporting layer, and aluminum as the electron-injecting top electrode contact. The cell structure of glass substrate/ITO/doped PVK/Alq3/Al was employed. In this cell structure, electron and hole are injected from the aluminum electrode and positive polarity, respectively. Then transport into emitting layer and recombinate concomitant electroluminescence from the doped PVK layer. The EL device has a relatively low turn-on voltage of 4 V dc bias, and a luminance of 1200 cd/m2 were achieved at a drive voltage of 10 V. The blue emission peaking at about 455 nm and 475 nm.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Baijun Chen, Baijun Chen, Jingying Hou, Jingying Hou, Haiyan An, Haiyan An, Shanhua Xue, Shanhua Xue, Jingsong Huang, Jingsong Huang, Shiyong Liu, Shiyong Liu, } "Bright blue electroluminescence from Poly(N-vinylcarbazole) doped with two dyes", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252981; https://doi.org/10.1117/12.252981
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