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Enhanced thermoelectric performance of twisted bilayer graphene nanoribbons junction
| Content Provider | Semantic Scholar |
|---|---|
| Author | Deng, Shuo Cai, Xiang Zhang, Yan Li, Lijie |
| Copyright Year | 2019 |
| Abstract | Abstract We investigate the electron transport and thermoelectric property of twisted bilayer graphene nanoribbon junction (TBGNRJ) in 0°, 21.8°, 38.2° and 60° rotation angles by first principles calculation with Landauer-Buttiker and Boltzmann theories. It is found that TBGNRJs exhibit a strong reduction of thermal conductance compared with the single graphene nanoribbon (GNR) and negative differential resistance (NDR) in 21.8° and 38.2° rotation angles under ± 0.2 V bias voltage. More importantly, three peak ZT values of 2.0, 2.7 and 6.1 can be achieved in the 21.8° rotation angle at 300 K. The outstanding ZT values of TBGNRJs are interpreted as the combination of the reduced thermal conductivity and enhanced electrical conductivity at optimized angles. |
| Starting Page | 622 |
| Ending Page | 628 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.carbon.2019.01.089 |
| Volume Number | 145 |
| Alternate Webpage(s) | https://arxiv.org/pdf/1811.01435v1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.carbon.2019.01.089 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
