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Proceedings Paper

Linear, macrocyclic, and hyperbranched polymers for electroluminescent applications
Author(s): Xu Tang Tao; Yadong Zhang; Shinichiro Maruyama; Tatsuo Wada; Hiroyuki Sasabe; H. Suzuki; Tetsuya Watanabe; Seizo Miyata
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Paper Abstract

We report a series of polymers with linear, macrocyclic and hyperbranched structures for electroluminescent (EL) applications. The polymers are polycarbazoles (PC) containing different substituents. The polymers are amorphous and are soluble in common organic solvents such as chloroform, and tetrahydrofuran (THF). High optical quality films were obtained by spin-coating from the polymer solutions of chloroform or THF. All these polymers show strong photoluminescence under a UV-lamp illumination. Single and bilayer EL devices consisting of anode/hole transfer layer/electron transfer layer/cathode have been fabricated and characterized. The effects of polymer structures on the energy levels and EL properties are discussed. The results indicated that macrocyclic oligomers and hyperbranched polymers are new candidates for EL devices.

Paper Details

Date Published: 16 December 1998
PDF: 9 pages
Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998); doi: 10.1117/12.332622
Show Author Affiliations
Xu Tang Tao, RIKEN--The Institute of Physical and Chemical Research (Japan)
Yadong Zhang, RIKEN--The Institute of Physical and Chemical Research (United States)
Shinichiro Maruyama, RIKEN--The Institute of Physical and Chemical Research (Japan)
Tatsuo Wada, RIKEN--The Institute of Physical and Chemical Research (Japan)
Hiroyuki Sasabe, RIKEN--The Institute of Physical and Chemical Research (Japan)
H. Suzuki, Tokyo Univ. of Agriculture and Technology (Japan)
Tetsuya Watanabe, Tokyo Univ. of Agriculture and Technology (Japan)
Seizo Miyata, Tokyo Univ. of Agriculture and Technology (Japan)


Published in SPIE Proceedings Vol. 3476:
Organic Light-Emitting Materials and Devices II
Zakya H. Kafafi, Editor(s)

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