Layered Polymer Light Emitting Diode Prepared by Evaporative Spray Deposition from Ultradilute Solution (ESDUS) Technique at Various Substrate Temperature
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- Shakutsui Masato
- Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University
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- Fujita Katsuhiko
- Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University Institute for Materials Chemistry and Engineering, Kyushu University
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- Tsutsui Tetsuo
- Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University Institute for Materials Chemistry and Engineering, Kyushu University
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The evaporative spray deposition from ultra-dilute solution (ESDUS) technique enables preparing a polymer layered structure. The bi-layer structure consisted of two π-conjugated polymers, where the top layer was deposited from tetrahydrofuran (THF) solution with the ESDUS technique onto the preceding bottom layer composed of the other THF-soluble polymer. It has been reported that the external quantum efficiency (EQE) of the polymer light emitting diode (PLED) having the bi-layer structure is significantly higher than a corresponding single-layer device. In the present study, the polymer bi-layer films are prepared at substrate temperatures of 65 °C and 80 °C. While the photoluminescence of the bi-layer film prepared at 80 °C indicated the separation of the two components in the film, that of the film at 65 °C suggested partially mixed structure. The PLED composed of the film at 80 °C exhibited significantly better performance than that at 65 °C and the PLED composed of the spin-coated mixed film. The mixture structure of the two component films can be controlled simply by the substrate temperature during ESDUS deposition.
収録刊行物
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- Journal of Photopolymer Science and Technology
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Journal of Photopolymer Science and Technology 20 (1), 53-56, 2007
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詳細情報 詳細情報について
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- CRID
- 1390282679300843392
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- NII論文ID
- 130004833161
- 40015602448
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- NII書誌ID
- AA11576862
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- COI
- 1:CAS:528:DC%2BD2sXot1Wnsbo%3D
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- ISSN
- 13496336
- 09149244
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- NDL書誌ID
- 8918074
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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