Synthesis and electrical characteristics of Ag2S nanocrystals

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

Research output: Contribution to journalArticle

24 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

Fingerprint

Nanocrystals
nanocrystals
Thin film transistors
synthesis
Electric properties
transistors
electrical properties
n-type semiconductors
Drain current
thin films
Electron diffraction
Differential thermal analysis
Diffraction patterns
Thermogravimetric analysis
crystallinity
thermal analysis
Electron microscopes
diffraction patterns
electron diffraction
electron microscopes

Keywords

  • Electrical properties
  • Semiconductors
  • Silver sulfide

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Synthesis and electrical characteristics of Ag2S nanocrystals. / Jang, Jaewon; Cho, Kyoungah; Lee, Sang Heon; Kim, Sangsig.

In: Materials Letters, Vol. 62, No. 8-9, 31.03.2008, p. 1438-1440.

Research output: Contribution to journalArticle

Jang, Jaewon ; Cho, Kyoungah ; Lee, Sang Heon ; Kim, Sangsig. / Synthesis and electrical characteristics of Ag2S nanocrystals. In: Materials Letters. 2008 ; Vol. 62, No. 8-9. pp. 1438-1440.
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