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同行評審


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.

頁(從 - 到)1-9
期刊Proceedings of SPIE - The International Society for Optical Engineering
出版狀態Published - 2005
事件Polarization Science and Remote Sensing II - San Diego, CA, United States
持續時間: 2005 8月 22005 8月 4

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程


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