Invention Grant
- Patent Title: Multilayer polymer electroluminescent device comprising water-soluble polymer layer containing cations and method for fabricating the same
- Patent Title (中): 包含含有阳离子的水溶性聚合物层的多层聚合物电致发光器件及其制造方法
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Application No.: US12668528Application Date: 2008-02-12
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Publication No.: US08350254B2Publication Date: 2013-01-08
- Inventor: Dong Kyu Park , Hyung Suk Woo , Tae-Woo Kwon , Seong-Jin Cho
- Applicant: Dong Kyu Park , Hyung Suk Woo , Tae-Woo Kwon , Seong-Jin Cho
- Applicant Address: KR Busan
- Assignee: Kyungsung University Industry Cooperation Foundation
- Current Assignee: Kyungsung University Industry Cooperation Foundation
- Current Assignee Address: KR Busan
- Agency: Alston & Bird LLP
- Priority: KR10-2007-0070300 20070712
- International Application: PCT/KR2008/000815 WO 20080212
- International Announcement: WO2009/008576 WO 20090115
- Main IPC: H01L29/08
- IPC: H01L29/08 ; H01L35/24 ; H01L51/00 ; H01L29/06 ; H01L29/12 ; H01L31/0328 ; H01L31/0336 ; H01L31/072 ; H01L31/109 ; H01L27/15 ; H01L29/26 ; H01L31/12 ; H01L33/00 ; H01L29/22 ; H01L21/66 ; G01R31/26
Abstract:
A polymer electroluminescent device is provided. The device includes an anode, a light-emitting layer, a cation-containing water-soluble polymer layer and a cathode formed in this order on a substrate wherein the cation-containing water-soluble polymer layer is formed by wet coating. The cation-containing water-soluble polymer layer as a secondary thin film layer is not dissolved in a solvent for the formation of the underlying light-emitting layer to prevent intermixing between the two layers, thereby enabling the formation of a multilayer structure by wet coating. In addition, the cation-containing water-soluble polymer layer attracts electrons injection from the cathode by an attractive Coulomb force to effectively increase the mobility of the electrons while blocking high-mobility holes from the anode at an interface between the light-emitting layer and the water-soluble layer. Further provided is a method for fabricating the electroluminescent device.
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