Synthesis and electrical characteristics of Ag2S nanocrystals

Jaewon Jang, Kyoungah Cho, Sang Heon Lee, Sangsig Kim

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

In this paper, Ag2S nanocrystals were synthesized by the colloidal method at room temperature. The synthesized Ag2S nanocrystals were spherical in shape with a diameter of about 10-20 nm and high crystallinity, which were confirmed by the high resolution transmission electron microscope images and selected-area electron diffraction patterns. In order to investigate the electrical properties of the Ag2S nanocrystals, a back-gate thin film transistor (TFT) device structure was fabricated on SiO2/Si substrates. The drain current of TFT composed of Ag2S was increased according to the increase in the voltages of drain-source and gate, revealing n-type semiconductor properties. The phase of the Ag2S nanocrystals, which is related to their electrical properties, was proved to be α-phase by thermo-gravimetric analysis, differential thermal analysis, and X-ray diffraction.

Original languageEnglish
Pages (from-to)1438-1440
Number of pages3
JournalMaterials Letters
Volume62
Issue number8-9
DOIs
Publication statusPublished - 2008 Mar 31

Keywords

  • Electrical properties
  • Semiconductors
  • Silver sulfide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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