ELECTRICAL PROPERTIES OF NANOROD-BASED ZNO/SIC HYBRID HETEROJUNCTIONS

1 TIAGULSKYI Stanislav
Co-authors:
1 YATSKIV Roman 1 FAITOVÁ Hana 1 KUČEROVÁ Šárka 1 VANIŠ Jan 1 GRYM Jan
Institution:
1 Institute of Photonics and Electronics of the Czech Academy of Sciences, Prague, Czech Republic, EU, tiagulskyi@ufe.cz
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
60-66
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
251 views / 121 downloads
Abstract

ZnO nanorods have attracted increasing interest in recent years due to their potential in optoelectronic applications. The lack of p-type ZnO emphasizes the importance of rectifying junctions realized on other p-type materials. SiC is a good candidate to create hybrid heterojunctions with ZnO due to its wurtzite crystal structure and a small lattice and thermal mismatch. The ZnO/SiC heterojunctions have a potential to show intense UV electroluminescence. We investigate morphology and electrical properties of a single vertically-oriented ZnO nanorod on a SiC substrate. The current-voltage measurements are performed directly in the vacuum chamber of a scanning electron microscope. The contact to a single nanorod is obtained by a nanoprobe, which allows for the measurement of the current-voltage characteristic of a single nanorod heterojunction of choice. The influence of ZnO growth parameters and post-growth treatment of ZnO/SiC structures are studied with the aim to minimize the density of structural/interfacial defects and to create low-dimensional hybrid heterojunctions with the potential to show intense UV electroluminescence.

Keywords: Chemical bath deposition, current-voltage characteristics, SEM, ZnO nanorods, ZnO/SiC heterojunctions

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