Temperature-dependent gate effect of sintered HgTe nanoparticles

Hyunsuk Kim, Kyoungah Cho, Dong Won Kim, Byung Moo Moon, Man Young Sung, Sangsig Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this study, the electronic properties of sintered HgTe nanoparticles are characterized to determine the type of charge carrier within them, and to investigate their gate effects as a function of temperature. HgTe nanoparticles synthesized by the colloidal method were first deposited on thermally oxidized Si substrates by spin-coating, and then sintered at 150°C. The sintered nanoparticles were determined to be p-type by analyzing the drain current and drain-source voltage (Id-Vds) relationship as a function of the gate voltage (Vg). The field-effect mobilities of the holes in the sintered HgTe nanoparticles are estimated to be 0.041, 0.036, and 0.022 cm2/(V·s) at 60, 180, and 300 K, respectively. The variation in the slope of the Id-Vds curve as a function of V g becomes more distinctive as temperature decreases. At temperatures lower than 140 K, an inversion mode was observed for the channel of the sintered nanoparticles.

Original languageEnglish
Pages (from-to)7213-7216
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number9 A
DOIs
Publication statusPublished - 2006 Sep 7

Keywords

  • Gate effect
  • HgTe
  • Mobility
  • Nanoparticle

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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