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Synthesis and electrical characteristics of Ag2S nanocrystals

Authors
Jang, JaewonCho, KyoungahLee, Sang HeonKim, Sangsig
Issue Date
31-3월-2008
Publisher
ELSEVIER SCIENCE BV
Keywords
silver sulfide; electrical properties; semiconductors
Citation
MATERIALS LETTERS, v.62, no.8-9, pp.1438 - 1440
Indexed
SCIE
SCOPUS
Journal Title
MATERIALS LETTERS
Volume
62
Number
8-9
Start Page
1438
End Page
1440
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123864
DOI
10.1016/j.matlet.2007.08.080
ISSN
0167-577X
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 alpha-phase by then-no-gravimetric analysis, differential thermal analysis, and X-ray diffraction. (C) 2007 Elsevier B.V. All rights reserved.
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