標題: Electron mobility and electroluminescence efficiency of blue conjugated polymers
作者: Yang, Chia-Ming
Liao, Hua-Hsien
Horng, Sheng-Fu
Meng, Hsin-Fei
Tseng, Shin-Rong
Hsu, Chain-Shu
應用化學系
物理研究所
Department of Applied Chemistry
Institute of Physics
關鍵字: polymer-LED;PFO(poly-fluorene);TR-EL;electron mobility
公開日期: 1-Jan-2008
摘要: We study systematically the underlying property which determines the electroluminescence efficiency of blue polymers based on polyfluorene and its copolymers. The photoluminescence efficiency is high (40-50%) for all the selected polymers, but the electroluminescence efficiency varies in a wide range. The hole mobility is measured by transient electroluminescence. The electron mobility is obtained from the current in electron-only device using space-charge-limited current equation. All polymers share roughly the same results, whereas electron mobility is the critical factor for electroluminescence. In general, low efficiency results from the low electron mobility. (C) 2007 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.synthmet.2007.11.006
http://hdl.handle.net/11536/9890
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2007.11.006
期刊: SYNTHETIC METALS
Volume: 158
Issue: 1-2
起始頁: 25
結束頁: 28
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