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Title | Investigation of Electrical and Thermoelectric Properties of ZnO/rGO Composites Prepared by Conventional Solid-state Reaction Method |
Authors |
Mangavati, Suraj
Rao, Ashok Devadiga, Dheeraj Selvakumar, M. Saxena, Monika Okram, G.S. |
ORCID | |
Keywords |
electrical resistivity mobility activation energy thermopower low temperature |
Type | Article |
Date of Issue | 2021 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/82596 |
Publisher | Sumy State University |
License | In Copyright |
Citation | Suraj Mangavati, Ashok Rao, et al., J. Nano- Electron. Phys. 13 No 1, 01026 (2021). DOI: https://doi.org/10.21272/jnep.13(1).01026 |
Abstract |
ZnO/rGO composites are prepared by the conventional solid-state reaction method. Structural
properties of prepared compounds were studied using XRD technique and it is observed that all the
samples are crystallized in wurtzite structure. Electrical resistivity measurements were carried out using
four probe method employing a closed cycle refrigerator. With addition of rGO, colossal reduction in the
resistivity is observed which is about three orders of magnitude smaller than that of the pure sample of
ZnO. Room temperature Hall measurements were performed to estimate the bulk concentration and
results show that addition of rGO into ZnO matrix enhances the number of charge carriers. Thermopower
measurements were carried out using differential dc method and a large reduction in Seebeck coefficient is
observed. |
Appears in Collections: |
Журнал нано- та електронної фізики (Journal of nano- and electronic physics) |
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File | Size | Format | Downloads |
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Suraj_Mangavati_jnep_1_2021.pdf | 482.47 kB | Adobe PDF | 1865144108 |
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