P -type electrical, photoconductive, and anomalous ferromagnetic properties of Cu2 O nanowires

L. Liao, B. Yan, Y. F. Hao, G. Z. Xing, J. P. Liu, B. C. Zhao, Z. X. Shen, T. Wu, L. Wang, J. T.L. Thong, C. M. Li, W. Huang, T. Yu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

106 Scopus citations

Abstract

Cu2 O nanowires are synthesized by reduction of CuO nanowires with hydrogen gas. Strong green photoluminescence dominated by band-edge emission is observed. Field effect transistors fabricated from individual Cu2 O nanowires present high on-off ratio (> 106) and high mobility (>95 cm2 /V s). Furthermore, the device demonstrates a fast photoelectric response to blue illumination in air at room temperature. In addition, anomalous ferromagnetism appears in Cu2 O nanowires, which may originate from the defects in Cu2 O nanowires. This work shows the application potentials of the Cu2 O nanowires, especially in an electrical and photonic device.

Original languageEnglish (US)
Article number113106
JournalApplied Physics Letters
Volume94
Issue number11
DOIs
StatePublished - 2009
Externally publishedYes

Bibliographical note

Funding Information:
L. Liao acknowledges the support in this work by the Singapore Millennium Foundation 2008 fellowship.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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