Surface modification of TiO2 by a self-assembly monolayer in inverted-type polymer light-emitting devices

被引：25

作者：

Hsieh, Sung-Nine ^{[1
]}

Chen, Shih-Pin ^{[1
]}

Li, Chen-Yan ^{[1
]}

Wen, Ten-Chin ^{[1
]}

Guo, Tzung-Fang ^{[2
]}

Hsu, Yao-Jane ^{[3
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Adv Optoelect Technol Ctr, Tainan 701, Taiwan

[2] Natl Cheng Kung Univ, Inst Electroopt Sci & Engn, Adv Optoelect Technol Ctr, Tainan 701, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 08期

关键词：

Polymer light-emitting diode; TiO2; Self-assembly monolayer; INDIUM-TIN-OXIDE; INJECTION; DIODES;

D O I：

10.1016/j.orgel.2009.08.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A self-assembled monolayer. N-[3-(trimethoxysily)propyl]ethylenediamine (PEDA-TMS), is employed to modify a titanium dioxide (TiO2) surface for tuning its conduction band to match the energy level of high-yellow phenyl-substituted poly(para-phenylenevinylene) copolymer (HY-PPV) for fabricating inverted-type polymer light-emitting diodes (I-PLEDs). Ultraviolet photoemission spectroscopy (UPS) and electron-dominated devices were used to investigate changes of the electron-injection barrier. A PEDA-TMS-modified device achieved much higher brightness (3148 cd/m(2)) than that of the bare TiO2 device (no luminescence). The air stability of the proposed device is highly improved by the use of stable electrodes and injection layers. These significant improvements make TiO2 application to PPV-based PLEDs. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1626 / 1631

页数：6

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