ZnO nanorods for electronic and photonic device applications

Gyu-Chul Yi; Jinkyoung Yoo; Won Il Park; Sug Woo Jung; Sung Jin An; H. J. Kim; D. W. Kim

doi:10.1117/12.637952

12 November 2005 ZnO nanorods for electronic and photonic device applications

Gyu-Chul Yi, Jinkyoung Yoo, Won Il Park, Sug Woo Jung, Sung Jin An, H. J. Kim, D. W. Kim

Proceedings Volume 6003, Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosystems; 600301 (2005) https://doi.org/10.1117/12.637952
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

We report on catalyst-free growth of ZnO nanorods and their nano-scale electrical and optical device applications. Catalyst-free metalorganic vapor-phase epitaxy (MOVPE) enables fabrication of size-controlled high purity ZnO single crystal nanorods. Various high quality nanorod heterostructures and quantum structures based on ZnO nanorods were also prepared using the MOVPE method and characterized using scanning electron microscopy, transmission electron microscopy, and optical spectroscopy. From the photoluminescence spectra of ZnO/Zn_0.8Mg_0.2O nanorod multi-quantum-well structures, in particular, we observed a systematic blue-shift in their PL peak position due to quantum confinement effect of carriers in nanorod quantum structures. For ZnO/ZnMgO coaxial nanorod heterostructures, photoluminescence intensity was significantly increased presumably due to surface passivation and carrier confinement. In addition to the growth and characterizations of ZnO nanorods and their quantum structures, we fabricated nanoscale electronic devices based on ZnO nanorods. We report on fabrication and device characteristics of metal-oxidesemiconductor field effect transistors (MOSFETs), Schottky diodes, and metal-semiconductor field effect transistors (MESFETs) as examples of the nanodevices. In addition, electroluminescent devices were fabricated using vertically aligned ZnO nanorods grown p-type GaN substrates, exhibiting strong visible electroluminescence.

Citation Download Citation

Gyu-Chul Yi, Jinkyoung Yoo, Won Il Park, Sug Woo Jung, Sung Jin An, H. J. Kim, and D. W. Kim "ZnO nanorods for electronic and photonic device applications", Proc. SPIE 6003, Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosystems, 600301 (12 November 2005); https://doi.org/10.1117/12.637952

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