Blue polarized luminescence from organic material aligned by ion-beam-processed poly(3,4-ethylenedioxythiophene)

Wei Yang Chou, Shih Ting Lin, Horng Long Cheng, Fu Ching Tang, Kai Yun Chang, S. K. Hsu, Yu Shen Mai, Chia Wei Kuo, Chia Rong Sheu, Chi Chang Liao, Ten Chin Wen

研究成果: Conference article

摘要

We first demonstrated that an organic electroluminescence (EL) device based on conjugated polymers, which emitted polarized light, aligned by ion beam processed films of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). Such devices would be particularly useful as backlights for conventional LCDs. Homogenous alignment of 4,4′-Bis[2-9(-ethyl-3- carbazoyl)vinylenyl]-1,1′-biphenyl (BECVB) films on thin layers of ion-beam-processed or rubbed PEDOT:PSS allows the construction of light-emitting diodes that emit polarized blue light (λem = 455 nm). The ion-beam-processed or rubbed PEDOT:PSS acts as an effective hole-injecting alignment layer. Polarized photoluminescence spectra demonstrated that the long axis of BECVB molecule was oriented along the ion-beam or rubbing direction. Owing to the orientation of BECVB molecules, polarized EL in the rubbing or ion-beam direction was observed in the device. The maximum photoluminescence polarization ratios of 5.6:1 and 3.2:1 were achieved for the devices aligned by rubbing and ion-beam methods, respectively.

原文English
文章編號58881C
頁(從 - 到)1-9
頁數9
期刊Proceedings of SPIE - The International Society for Optical Engineering
5888
DOIs
出版狀態Published - 2005 十二月 29
事件Polarization Science and Remote Sensing II - San Diego, CA, United States
持續時間: 2005 八月 22005 八月 4

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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