journal article·2023-05

Carrier Relaxation and Multiplication in Bi Doped Graphene

Qi Liu, Xianyang Lu, Yuxiang Liu, Zhihao Li, Pengfei Yan, Wang Chen, Qinghao Meng, Yongheng Zhang, ChiYung Yam, Liang He, Yu Yan, Yi Zhang, Jing Wu, Thomas Frauenheim, Rong Zhang, Yongbing Xu

Small· Volume 19· Issue 18
Publisher page

Abstract

Abstract By introducing different contents of Bi adatoms to the surface of monolayer graphene, the carrier concentration and their dynamics have been effectively modulated as probed directly by the time‐ and angle‐resolved photoemission spectroscopy technique. The Bi adatoms are found to assist acoustic phonon scattering events mediated by supercollisions as the disorder effectively relaxes the momentum conservation constraint. A reduced carrier multiplication has been observed, which is related to the shrinking Fermi sea for scattering, as confirmed by time‐dependent density functional theory simulation. This work gives insight into hot carrier dynamics in graphene, which is crucial for promoting the application of photoelectric devices.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Graphene research and applications · 2D Materials and Applications · Thermal properties of materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing 210093 China

Bremen Center for Computational Materials Science University of Bremen Am Fallturm 1 28359 Bremen Germany

National Laboratory of Solid State Microstructure School of Physics and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen 518000 China

Hong Kong Quantum AI Lab Limited Hong Kong 00000 China

York‐Nanjing Joint Center (YNJC) for Spintronics and Nano‐engineering Department of Electronics and Physics University of York York YO10 5DD UK

Beijing Computational Science Research Center Haidian District Beijing 100193 China

Shenzhen JL Computational Science and Applied Research Institute Shenzhen 518109 China

Funding

National Basic Research Program of China · National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · Deutsche Forschungsgemeinschaft

References (33)

Show source-provided references
1. 10.1103/PhysRevB.85.24140410.1103/PhysRevB.85.241404 ↗
2. 10.1038/nnano.2012.19310.1038/nnano.2012.193 ↗
3. 10.1021/nl503614v10.1021/nl503614v ↗
4. 10.1038/nmat375710.1038/nmat3757 ↗
5. 10.1103/PhysRevLett.111.02740310.1103/PhysRevLett.111.027403 ↗
6. 10.1103/PhysRevB.87.15542910.1103/PhysRevB.87.155429 ↗
7. 10.1038/srep1684110.1038/srep16841 ↗
8. 10.1038/nphys47710.1038/nphys477 ↗
9. 10.1126/science.113068110.1126/science.1130681 ↗
10. 10.1021/nl802996s10.1021/nl802996s ↗
11. 10.1021/nl504155f10.1021/nl504155f ↗
12. 10.1073/pnas.151043511210.1073/pnas.1510435112 ↗
13. 10.1103/PhysRevLett.102.20641010.1103/PhysRevLett.102.206410 ↗
14. 10.1103/PhysRevB.79.11544710.1103/PhysRevB.79.115447 ↗
15. 10.1103/PhysRevB.77.19541210.1103/PhysRevB.77.195412 ↗
16. 10.1038/ncomms1161710.1038/ncomms11617 ↗
17. 10.1103/PhysRevLett.108.24610410.1103/PhysRevLett.108.246104 ↗
18. 10.1103/PhysRevB.77.15530310.1103/PhysRevB.77.155303 ↗
19. 10.1103/PhysRevB.51.1361410.1103/PhysRevB.51.13614 ↗
20. 10.1103/PhysRevB.83.12140810.1103/PhysRevB.83.121408 ↗
21. 10.1103/PhysRevLett.107.16680310.1103/PhysRevLett.107.166803 ↗
22. 10.1038/nphys249410.1038/nphys2494 ↗
23. 10.1021/nl502163d10.1021/nl502163d ↗
24. Li Z. · 2020
25. 10.1103/PhysRevB.77.11541610.1103/PhysRevB.77.115416 ↗
26. 10.1021/nl802156w10.1021/nl802156w ↗
27. 10.1088/1361-648X/ab5e5710.1088/1361-648X/ab5e57 ↗
28. 10.1016/j.ijmecsci.2021.10657610.1016/j.ijmecsci.2021.106576 ↗
29. 10.1088/0953-8984/27/8/08300210.1088/0953-8984/27/8/083002 ↗
30. 10.1103/PhysRevLett.109.10660210.1103/PhysRevLett.109.106602 ↗
31. 10.1021/acs.nanolett.1c0271410.1021/acs.nanolett.1c02714 ↗
32. 10.1063/5.003944010.1063/5.0039440 ↗
33. 10.3390/app903037010.3390/app9030370 ↗