Synthesis of fluorene-based polyelectrolytes tethering different counterions for single-component white light-emitting electrochemical cells

Sheng-Hsiung Yang*, Chia Sheng Tsai, Bo Cun Liu, Hai-Ching Su

*此作品的通信作者

研究成果: Conference article同行評審

1 引文 斯高帕斯(Scopus)

摘要

A series of polyfluorene (PF) electrolytes bearing Br-, BF 4-, or PF6- counterions were synthesized and characterized. 2,1,3-benzoselenadiazole moieties were incorporated into polymer main chains to produce single-component white lightemitting 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.

原文English
文章編號88291U
期刊Proceedings of SPIE - The International Society for Optical Engineering
8829
DOIs
出版狀態Published - 2013
事件Organic Light Emitting Materials and Devices XVII - San Diego, CA, United States
持續時間: 25 8月 201328 8月 2013

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