High Luminescence Polarized Polymer Light-Emitting Diodes Fabricated Using Aligned Polyfluorene

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概要

• 論文の詳細を見る

• We have successfully constructed a polarized polymer light-emitting diodes (PLEDs) by employing poly($N$-vinylcarbazole) (PVK) as an extra hole-transporting alignment layer that prevents the damage of the hole-injected layer of poly(3,4 ethylenedioxythiophene)–poly(styrene sulfonate) (PEDOT–PSS) by mechanical rubbing. The maximum luminance efficiency 0.31 cd A-1 of blue polarized PLED fabricated with the aligned polufluorene (PF) layer is obtained. The brightness approaches 1000 cd m-2 at a relatively low biased voltage. By using a PVK alignment layer, a dichroic ratio of 25.7 (at a 451 nm emission wavelength) was observed by finding the optimum thickness of PF that was sufficiently highly polarized to be used as an efficient light source in liquid crystal displays. The spectrum of photon emission is narrow, characterized by its full width at half maximum value.

• INSTITUTE OF PURE AND APPLIED PHYSICSの論文
• 2006-01-25

著者

• Chou Wei-yang

  Institute Of Electro-optical Science And Engineering National Cheng Kung University

• Chung Sheng-feng

  Department Of Chemical Engineering National Cheng Kung University

• Guo Tzung-fang

  Institute Of Electro-optical Science And Engineering Advanced Optoelectronic Technology Center Natio

• Wen Ten-chin

  Department Of Chemical Engineering National Cheng Kung University

• Guo Tzung-Fang

  Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan

• Wen Ten-Chin

  Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan

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