Observation of single-electron transport in a Zn0.8Mg0.2O/ZnO coaxial heterostructure nanorod
- Title
- Observation of single-electron transport in a Zn0.8Mg0.2O/ZnO coaxial heterostructure nanorod
- Authors
- Jeong, D; Ki, DK; Bae, MH; Lee, HJ; Lee, CH; Yoo, J; Yi, GC; 이규철
- Date Issued
- 2008-01
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- Coaxial Zn0.8Mg0.2O/ZnO hetrostructure semiconducting nanorods with different band gaps were fabricated on oxide-layer-covered Si substrates by using catalyst-free metal-organic vapor-phase epitaxy. The electrical conduction of nanorods with Ti/Au Schottky-contact electrodes, taken at various temperatures down to 50 mK, revealed a Coulomb-blockade behavior, pointing a multiple quantum-dot structure existing in the ZnO nanorod core or in the Zn0.8Mg0.2O cylindrical shell over a wide range of gate voltages. These characteristics, transformed into single-dot ones at high positive gate voltages. This study confirms, by electrical conduction measurements, the formation of a coaxial heterojunction structure between materials of two different band gaps and provides a possibility for utilizing the structure for three-terminal device applications.
- Keywords
- coaxial heterojunction nanorod; quantum dot; Coulomb diamond; WALLED CARBON NANOTUBES; PHOTOLUMINESCENT PROPERTIES; NANOWIRE HETEROSTRUCTURES; DEPENDENT TRANSPORT; TRANSISTORS; ZNO
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22571
- ISSN
- 0374-4884
- Article Type
- Conference
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- There are no files associated with this item.
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