標題: Electro-optical properties of poly(1-(difluorophenyl)-2(4-alkylcyclohexyl phenyl)acetylene) organic light-emitting diodes
作者: Huang, Chun-Hao
Lee, Chih-Wen
Hsu, Chain-Shu
Renaud, Cedric
Nguyen, Thien-Phap
應用化學系
Department of Applied Chemistry
關鍵字: OLEDs;polyacetylene;traps;DLTS
公開日期: 16-Jul-2007
摘要: For organic light-emitting diodes (OLEDs) applications, we have investigated novel polymers, using substituted polyacetylenes (PA), poly(I (fluorophenyl)-2-(alkylcyclohexylphenyl)acetylene) (PDPA-nF) (n =1 or n = 2) which exhibit air stability, better solubility in common organic solvent and higher luminescence than polyacetylene. In this study, we have used poly[(1-(3,4-difluorophenyl)-2-(4-pentylcyclohexylphenyl) acetylene)] (PDPA-2F) as an emitter in OLEDs and their performance was determined by measuring the cuffent-voltage-luminance characteristic. The devices have a maximum brightness of 827 candela (cd)/M-2 at 12 V and a maximum current efficiency of 0. 7 8 cd/A at 9 V with a maximum luminescence at 536 nm. Influence of the metal electrode on the charge injection was studied using several cathode configurations (Ca, Al and Au) for the devices. Furthermore, the charge injection and transport processes were correlated to the presence of traps inside the polymer, determined by deep level transient spectroscopy (DLTS). (c) 2007 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.tsf.2006.11.095
http://hdl.handle.net/11536/4363
ISSN: 0040-6090
DOI: 10.1016/j.tsf.2006.11.095
期刊: THIN SOLID FILMS
Volume: 515
Issue: 19
起始頁: 7671
結束頁: 7674
Appears in Collections:Conferences Paper


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