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Title: Peripheral Modification of 1,3,5-Triazine Based Electron-Transporting Host Materials for Sky Blue, Green, Yellow, Red, and White Electrophosphorescent Devices
Authors: Hsiao-Fan Chen;Ting-Chih Wang;Shih-Wei Lin;Wen-Yi Hung;Hung-Chi Dai;Hao-Chih Chiu;Ken-Tsung Wong;Meng-Huan Ho;Ting-Yi Cho;Chieh-Wei Chen;Chung-Chun Lee
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2012
Issue Date: 2017-02-15T07:14:14Z
Publisher: Journal of Materials Chemistry
Abstract: Abstract: A systematic comparison of the physical properties and the dual-role (host and electron transport) applications of star-shaped 1,3,5-triazine-based ET-type hosts (T2T, 3N-T2T, 3P-T2T, and oCF3-T2T) with differential peripheral groups was reported. The introduction of N-heterocyclic polar peripheries onto a 1,3,5-triazine core gave evident benefits to the electron injection/transport properties, rendering efficient PhOLEDs with a simpler device configuration feasible. Among these hosts, 3P-T2T can serve both as a promising host and electron-transport material for various Ir-based electrophosphorescence devices. These PhOLEDs configured with the same device structure exhibited low operation voltages with a maximum ηext of 8%, 15.7%, 16.9%, 16.4% and 10.8% for sky blue (FIrpic), green [(PPy)2Ir(acac)], yellow [(Bt)2Ir(acac)], red [(Mpq)2Ir(acac)] and white [FIrpic + 0.5 wt%(Mpq)2Ir(acac)], respectively.
Relation: 22
Appears in Collections:[Institute of Optoelectronic Sciences] Periodical Articles

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