Work function tuning of tin-doped indium oxide electrodes with solution-processed lithium fluoride

C. W. Ow-Yang, J. Jia, T. Aytun, M. Zamboni, A. Turak, K. Saritas, Y. Shigesato

研究成果: Article査読

19 被引用数 (Scopus)

抄録

Solution-processed lithium fluoride (sol-LiF) nanoparticles synthesized in polymeric micelle nanoreactors enabled tuning of the surface work function of tin-doped indium oxide (ITO) films. The micelle reactors provided the means for controlling surface coverage by progressively building up the interlayer through alternating deposition and plasma etch removal of the polymer. In order to determine the surface coverage and average interparticle distance, spatial point pattern analysis was applied to scanning electron microscope images of the nanoparticle dispersions. The work function of the sol-LiF modified ITO, obtained from photoelectron emission yield spectroscopy analysis, was shown to increase with surface coverage of the sol-LiF particles, suggesting a lateral depolarization effect. Analysis of the photoelectron emission energy distribution in the near threshold region revealed the contribution of surface states for surface coverage in excess of 14.1%. Optimization of the interfacial barrier was achieved through contributions from both work function modification and surface states.

本文言語English
ページ(範囲)58-63
ページ数6
ジャーナルThin Solid Films
559
DOI
出版ステータスPublished - 2014 5 30
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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