標題: Synthesis of fluorene-based polyelectrolytes tethering different counterions for single-component white light-emitting electrochemical cells
作者: Yang, Sheng-Hsiung
Tsai, Chia-Sheng
Liu, Bo-Cun
Su, Hai-Ching
照明與能源光電研究所
Institute of Lighting and Energy Photonics
關鍵字: polyelectrolytes;counterions;light-emitting electrochemical cells;solid-state lighting
公開日期: 2013
摘要: A series of polyfluorene (PF) electrolytes bearing Br-, BF4-, or PF6- counterions were synthesized and characterized. 2,1,3-benzoselenadiazole moieties were incorporated into polymer main chains to produce single-component white light-emitting polymers. The thermal stability of Br-containing ionic PF was decreased because of the Hofmann elimination occurred at higher temperature. By replacing Br- with BF4- or PF6- counterions, the thermal stability of polymers was significantly improved. The emission intensity around 550 nm was decreased for ionic polyelectrolytes. The optimized spin-coated light-emitting electrochemical cell (LEC) with the configuration of ITO/PEDOT/polymer/Ag showed a maximum luminescence efficiency of 1.56 lm/W at a low operation bias of 3 V. The single-component LEC device exhibited pure white light emission with CIE\'1931 coordinates approaching (0.33, 0.33) and high color rendering index (CRI > 85), referring to its potential use in solid-state-lighting application.
URI: http://hdl.handle.net/11536/24560
http://dx.doi.org/10.1117/12.2022853
ISBN: 978-0-8194-9679-9
ISSN: 0277-786X
DOI: 10.1117/12.2022853
期刊: ORGANIC LIGHT EMITTING MATERIALS AND DEVICES XVII
Volume: 8829
顯示於類別:會議論文


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