Electrical properties of individual single-crystalline gallium phosphide nanowires with an outer oxide shell

Jae Ryoung Kim, Byoung K. Kim, Jeong O. Lee, Jinhee Kim, Han Jong Seo, Cheol Jin Lee, Ju J. Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

High-quality single-crystalline GaP nanowires were grown by a simple vapour deposition method and their electrical and opto-electric transport properties were studied. Structural studies showed that the GaP nanowires consisted of a core-shell structure with a single-crystalline GaP core and an outer gallium oxide (GaOx) layer of thickness ∼6 nm. The individual GaP nanowires exhibited n-type field effects with an on/off ratio as high as 10 5 and their carrier mobilities are in the range of about 10-22 cm2 V-1 s-1 at room temperature. When the devices were exposed to an ultraviolet (UV) light source, the current in the nanowires increased abruptly to more than 103 times, and this was possibly due to carrier generation in the nanowires and de-adsorption of adsorbed O2- ions on the GaOx surface shell. The nanowires also showed good reversible switching actions between the high- and low-resistance states.

Original languageEnglish
Pages (from-to)1397-1400
Number of pages4
JournalNanotechnology
Volume15
Issue number11
DOIs
Publication statusPublished - 2004 Nov 1
Externally publishedYes

Fingerprint

Gallium phosphide
Nanowires
gallium phosphides
Oxides
Electric properties
nanowires
electrical properties
Crystalline materials
oxides
gallium oxides
Gallium
Vapor deposition
Carrier mobility
low resistance
high resistance
Ultraviolet Rays
carrier mobility
ultraviolet radiation
Transport properties
Adsorption

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Electrical properties of individual single-crystalline gallium phosphide nanowires with an outer oxide shell. / Kim, Jae Ryoung; Kim, Byoung K.; Lee, Jeong O.; Kim, Jinhee; Seo, Han Jong; Lee, Cheol Jin; Kim, Ju J.

In: Nanotechnology, Vol. 15, No. 11, 01.11.2004, p. 1397-1400.

Research output: Contribution to journalArticle

Kim, Jae Ryoung ; Kim, Byoung K. ; Lee, Jeong O. ; Kim, Jinhee ; Seo, Han Jong ; Lee, Cheol Jin ; Kim, Ju J. / Electrical properties of individual single-crystalline gallium phosphide nanowires with an outer oxide shell. In: Nanotechnology. 2004 ; Vol. 15, No. 11. pp. 1397-1400.
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