Study of the optoelectronic properties of hybrid heterojunction

Sponsor: Czech Science Foundation

Principal investigator: Roman Yatskiv, Ph.D.

Members: Jan Grym, Ph.D.; Jan Vaniš, Ph.D.; Stanislav Tiagulskyi, Ph.D.; Marie Hamplová, MSc..

From: 2017-01-01

To: 2019-12-31

Unique properties of ZnO and the ease of the growth of its nanostructures make this material extremely attractive for a variety of  optoelectronic applications. To fully exploit the potential of ZnO, there is one essential problem which must be solved: the preparation of a high-quality rectifying junction. The lack of p-type electrical conductivity in ZnO emphasizes the importance of the study of hybrid  heterojunctions. One of the key issues in these heterojunctions is to understand the charge transport mechanism. Our goal is to  systematically analyze the charge transport mechanism in hybrid heterojunctions formed by a single ZnO nanorod or the array of  nanorods and p-type GaN(SiC) substrate. Project goals present a considerable challenge with a wide range of potential applications, particularly in light-emitting devices, photodetectors and solar cells.

Publications:

1. Yatskiv R, Tiagulskyi S, Grym J. Characterization of graphite/ZnO Schottky barriers formed on polar and nonpolar ZnO surfaces. Phys Status Solidi A. 2018. 
2. Yatskiv R, Grym J. Influence of the Interaction Between Graphite and Polar Surfaces of ZnO on the Formation of Schottky Contact. Journal of Electronic Materials. 2018;47:5002-6.
3. Yatskiv R, Tiagulskyi S, Grym J, Cernohorsky O. Electrical and Optical Properties of Rectifying ZnO Homojunctions Fabricated by Wet Chemistry Methods. Phys Status Solidi A. 2018;215.
4. Yatskiv R, Grym J. Graphite/SiC junctions and their electrical characteristics. Phys Status Solidi A. 2017;214.
5. Yatskiv R, Grym J, Schenk A, Vanis J, Roesel D, Chlupova S. Optoelectrical characterization of well oriented n-type ZnO nanorod arrays on p-type GaN templates.  NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application 2018. p. 787-91.
6. Tiagulskyi S, Yatskiv R, Grym J, Schenk A, Roesel D, Vaniš J, et al. Electrical properties of nanoscale heterojunctions formed between GaN and ZnO nanorods.  NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application2018. p. 146-51.
7. Yatskiv R, Basinova N, Grym, Vanis J. Effect of Eu doping on the optical properties of ZnO nanorods prepared by chemical bath deposition.  NANOCON 2018 - Conference Proceedings, 10th International Conference on Nanomaterials - Research and Application p. 1-6.