標題: | General method to solution-process multilayer polymer light-emitting diodes |
作者: | Tseng, SR Lin, SC Meng, HF Liao, HH Yeh, CH Lai, HC Horng, SF Hsu, CS 應用化學系 物理研究所 Department of Applied Chemistry Institute of Physics |
公開日期: | 17-Apr-2006 |
摘要: | An intermediate liquid buffer layer is introduced to overcome the dissolution problem of solution-processed multilayer conjugated polymer light-emitting diodes. This method can be applied to arbitrary combinations of polymers with no restriction on solvents. As an example, a hole-blocking layer is successfully spin coated on the common p-type emissive polymer layers. One green- and two blue-emitting polymers are chosen as the emissive layers. The electron-hole balance and efficiency are significantly improved by the addition of hole-blocking layer. The electroluminescence efficiency can be increased up to nine times, while the luminance up to seven times. In particular, 1.5 cd/A is obtained for deep blue emission from poly(9,9-dioctyl-fluorene) with 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene spin coated as the hole-blocking material. (c) 2006 American Institute of Physics. |
URI: | http://dx.doi.org/10.1063/1.2192574 http://hdl.handle.net/11536/12360 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.2192574 |
期刊: | APPLIED PHYSICS LETTERS |
Volume: | 88 |
Issue: | 16 |
結束頁: | |
Appears in Collections: | Articles |
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