Ultrasonically Assisted Fabrication of Graphene/ZnO Nanocomposites with Accelerated Ultraviolet Photoresponse
| Authors | A. Nadtochiy1 , A. Podolian1 , O. Korotchenkov1 , O. Oberemok2 , O. Kosulya2 , B. Romanyuk2 |
| Affiliations |
1Faculty of Physics, Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine 2V. Lashkarev Institute of Semiconductor Physics NAS of Ukraine, 03028 Kyiv, Ukraine |
| Е-mail | artem1976@knu.ua |
| Issue | Volume 17, Year 2025, Number 1 |
| Dates | Received 10 January 2025; revised manuscript received 18 February 2025; published online 27 February 2025 |
| Citation | A. Nadtochiy, A. Podolian, et al., J. Nano- Electron. Phys. 17 No 1, 01028 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(1).01028 |
| PACS Number(s) | 73.50.Pz, 72.20.Jv |
| Keywords | Surface Photovoltage, Zinc Oxide (10) , Photocurrent Decay. |
| Annotation |
This study focuses on ultrasonically assisted fabrication of the graphene/ZnO interface by placing ZnO nanorods into a graphene-tetrahydrofuran solution. This technique increases the magnitude of the photocurrent in ZnO illuminated by a 275 nm light and accelerates the photocurrent transient. A simplified model based on the charge transfer at the graphene/ZnO interface is proposed to describe the observed phenomenon. It is interpreted as a result of an enhanced injection of photogenerated electrons into graphene nanosheets accompanied by a significantly reduced concentration of oxygen atoms adsorbed on the surface of ZnO nanorods. This approach can be used to manufacture fast ultraviolet ZnO-based photodetectors. |
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List of References |
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