High Sensitivity Tuning of Work Function of Self-Assembled Monolayers Modified Electrodes Using Vacuum Ultraviolet Treatment

Porraphon Tantitarntong, Peter Zalar, Naoji Matsuhisa, Kyohei Nakano, Sunghoon Lee, Tomoyuki Yokota, Keisuke Tajima, Takao Someya

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We demonstrate systematic work function tuning of thiol-based SAM-modified gold electrodes with high controllability and sensitivity as high as 0.05 eV using vacuum ultraviolet technique (VUV). Under different irradiation times, both work function and wettability of the metal surface is modified. Fine tuning of the electrode work function is demonstrated by observable changes in the reverse current of a polymer Schottky diode. Additionally, the change in SAM chemical functionality validates the work function changes of VUV-irradiated electrodes. Our selective work function patterning on a single Au electrode via VUV could also reduce the required fabrication steps for more complex circuits.

Original languageEnglish
Pages (from-to)28151-28156
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number34
DOIs
Publication statusPublished - 2017 Aug 30
Externally publishedYes

Keywords

  • organic semiconductors
  • self-assembled monolayers
  • UPS
  • vacuum ultraviolet
  • work function tuning

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Dive into the research topics of 'High Sensitivity Tuning of Work Function of Self-Assembled Monolayers Modified Electrodes Using Vacuum Ultraviolet Treatment'. Together they form a unique fingerprint.

  • Cite this