The synthesis and electrical characterization of Cu2O/Al:ZnO radial p-n junction nanowire arrays

Chien Lin Kuo, Ruey Chi Wang, Jow Lay Huang, Chuan Pu Liu, Chun Kai Wang, Sheng Po Chang, Wen Huei Chu, Chao Hung Wang, Chia Hao Tu

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

Vertically aligned large-area p-Cu2O/n-AZO (Al-doped ZnO) radial heterojunction nanowire arrays were synthesized on silicon without using catalysts in thermal chemical vapor deposition followed by e-beam evaporation. Scanning electron microscopy and high-resolution transmission electron microscopy results show that poly-crystalline Cu2O nano-shells with thicknesses around 10nm conformably formed on the entire periphery of pre-grown Al:ZnO single-crystalline nanowires. The Al doping concentration in the Al:ZnO nanowires with diameters around 50nm were determined to be around 1.19at.% by electron energy loss spectroscopy. Room-temperature photoluminescence spectra show that the broad green bands of pristine ZnO nanowires were eliminated by capping with Cu2O nano-shells. The current-voltage (I-V) measurements show that the p-Cu2O/n-AZO nanodiodes have well-defined current rectifying behavior. This paper provides a simple method to fabricate superior p-n radial nanowire arrays for developing nano-pixel optoelectronic devices and solarcells.

原文English
文章編號365603
期刊Nanotechnology
20
發行號36
DOIs
出版狀態Published - 2009 9月 9

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 材料科學(全部)
  • 材料力學
  • 機械工業
  • 電氣與電子工程

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