P-type electrical, photoconductive, and anomalous ferromagnetic properties of Cu2O nanowires

Liao, L.; Yan, B.; Hao, Y. F.; Xing, G. Z.; Liu, J. P.; Zhao, B. C.; Shen, Z. X.; Wu, T.; Wang, L.; Thong, J. T. L.; Li, C. M.; Huang, W.; Yu, T.
March 2009
Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p113106
Academic Journal
Cu2O 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 Cu2O 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 Cu2O nanowires, which may originate from the defects in Cu2O nanowires. This work shows the application potentials of the Cu2O nanowires, especially in an electrical and photonic device.


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