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

Sung Nine Hsieh, Shih Pin Chen, Chen Yan Li, Ten Chin Wen, Tzung Fang Guo, Yao Jane Hsu

研究成果: Article同行評審

24 引文 斯高帕斯(Scopus)


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/m2) 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.

頁(從 - 到)1626-1631
期刊Organic Electronics
出版狀態Published - 2009 十二月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 生物材料
  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學
  • 電氣與電子工程


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