Enhancement of Surface Potential Buildup and Decay of Tris(8-quinolinato)aluminum Film Deposited on Ultraviolet/Ozone-Treated Gold Electrodes

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概要

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• The enhancement of the surface potential of tris(8-quinolinato)aluminum (Alq3) film deposited on ultraviolet (UV)/ozone-treated gold electrodes was confirmed by surface potential measurement, and the ordering of molecular dipoles was suggested. The enhanced surface potential of the order of 10 V decayed rapidly by photoirradiation, due to molecular dipole disordering, but a surface potential of 100–400 mV remained. Interestingly, this remaining surface potential of Alq3 on the UV/ozone-treated gold electrode was always smaller than that of Alq3 film on an untreated gold electrode. It was concluded that the UV/ozone treatment is effective in decreasing the density of surface states at the Alq3-metal interface as well as for the enhancement of molecular dipole ordering.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-02-15

著者

• Kajimoto Norifumi

  Department Of Physical Electronics Tokyo Institute Of Technology

• Manaka Takaaki

  Department Of Physical Electronics Graduate School Of Science And Engineering Tokyo Institute Of Tec

• Iwamoto Mitsumasa

  Department Of Electrical And Electronic Engineering

• Muhamad Muhamad

  Physics Department, University of Malaya, Kuala Lumpur 50603, Malaysia

• Rahman Saadah

  Physics Department, University of Malaya, Kuala Lumpur 50603, Malaysia

• Rahman Saadah

  Physics Department University Of Malaya

• Muhamad Muhamad

  Physics Department University Of Malaya

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