TITLE

ZnO–ZnTe nanocone heterojunctions

AUTHOR(S)
Sang Hyun Lee; Zhang, X.-G.; Smith, Barton; Seo, Sung Seok A.; Bell, Zane W.; Jun Xu
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p193116
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report heterojunctions made of vertically aligned ZnO–ZnTe nanocones synthesized using a combination of thermal vapor deposition and pulsed-laser deposition. ZnO nanocones and nanorods were controlled by utilizing the growth rate difference between central and boundary sites of precursor domains. The p–n heterojunctions were subsequently formed by growing ZnTe as shells on the nanocone surface. Structural and electric characteristics indicate that nanocones are more feasible than nanorods for forming heterojunction. Furthermore, theoretical modeling demonstrates that the nanocone-based junction exhibits an electrostatic potential profile that is much more effective for carrier transport than the electrostatic potential for the nanorod-based junction.
ACCESSION #
50510738

 

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