journal article·2023-04-25Open access

Rydberg Excitons and Trions in Monolayer MoTe2

Souvik Biswas, Aurélie Champagne, Jonah B. Haber, Supavit Pokawanvit, Joeson Wong, Hamidreza Akbari, Sergiy Krylyuk, Kenji Watanabe, Takashi Taniguchi, Albert V. Davydov, Zakaria Y. Al Balushi, Diana Y. Qiu, Felipe H. da Jornada, Jeffrey B. Neaton, Harry A. Atwater

ACS Nano· Volume 17· Issue 8

Abstract

Monolayer transition metal dichalcogenide (TMDC) semiconductors exhibit strong excitonic optical resonances, which serve as a microscopic, noninvasive probe into their fundamental properties. Like the hydrogen atom, such excitons can exhibit an entire Rydberg series of resonances. Excitons have been extensively studied in most TMDCs (MoS 2, MoSe 2, WS 2, and WSe 2 ), but detailed exploration of excitonic phenomena has been lacking in the important TMDC material molybdenum ditelluride (MoTe 2 ). Here, we report an experimental investigation of excitonic luminescence properties of monolayer MoTe 2 to understand the excitonic Rydberg series, up to 3s. We report a significant modification of emission energies with temperature (4 to 300 K), thereby quantifying the exciton–phonon coupling. Furthermore, we observe a strongly gate-tunable exciton–trion interplay for all the Rydberg states governed mainly by free-carrier screening, Pauli blocking, and band gap renormalization in agreement with the results of first-principles GW plus Bethe–Salpeter equation approach calculations. Our results help bring monolayer MoTe 2 closer to its potential applications in near-infrared optoelectronics and photonic devices.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · Quantum Dots Synthesis And Properties

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

Affiliations

Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, California 91125, United States

Kavli Nanoscience Institute, Pasadena, California 91125, United States

Materials and Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Department of Physics, University of California Berkeley, Berkeley, California 94720, United States

Department of Applied Physics, Stanford University, Stanford, California 94305, United States

Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States

Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States

Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan

International Center for Materials, Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan

Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06520, United States

Kavli Energy Nanosciences Institute at Berkeley, Berkeley, California 94720, United States

Funding

Ministry of Education, Culture, Sports, Science and Technology · National Institute of Standards and Technology · Core Research for Evolutional Science and Technology · Wallonie-Bruxelles International · David and Lucile Packard Foundation · Japan Society for the Promotion of Science

References (53)

Show source-provided references
1. 10.1103/RevModPhys.90.02100110.1103/RevModPhys.90.021001 ↗
2. 10.1038/s41586-020-2868-610.1038/s41586-020-2868-6 ↗
3. 10.1038/s41567-022-01702-z10.1038/s41567-022-01702-z ↗
4. 10.1038/s41586-021-03590-410.1038/s41586-021-03590-4 ↗
5. 10.1038/s41586-022-04472-z10.1038/s41586-022-04472-z ↗
6. 10.1038/srep0921810.1038/srep09218 ↗
7. 10.1103/PhysRevLett.111.21680510.1103/PhysRevLett.111.216805 ↗
8. 10.1038/srep0660810.1038/srep06608 ↗
9. 10.1038/nmat406110.1038/nmat4061 ↗
10. 10.1103/PhysRevLett.113.07680210.1103/PhysRevLett.113.076802 ↗
11. 10.1038/ncomms1525110.1038/ncomms15251 ↗
12. 10.1038/nphys294210.1038/nphys2942 ↗
13. 10.1103/PhysRevLett.108.19680210.1103/PhysRevLett.108.196802 ↗
14. 10.1038/ncomms188210.1038/ncomms1882 ↗
15. 10.1088/1361-648X/aac18710.1088/1361-648X/aac187 ↗
16. 10.1021/acs.nanolett.9b0002910.1021/acs.nanolett.9b00029 ↗
17. 10.1103/PhysRevLett.113.07680210.1103/PhysRevLett.113.076802 ↗
18. 10.1103/PhysRevB.93.23543510.1103/PhysRevB.93.235435 ↗
19. 10.1021/acs.nanolett.2c0200010.1021/acs.nanolett.2c02000 ↗
20. 10.1038/s41563-020-00888-y10.1038/s41563-020-00888-y ↗
21. 10.1038/s41586-020-2868-610.1038/s41586-020-2868-6 ↗
22. 10.1038/s41467-018-03742-710.1038/s41467-018-03742-7 ↗
23. 10.1038/s41467-021-22537-x10.1038/s41467-021-22537-x ↗
24. 10.1103/PhysRevLett.113.07680210.1103/PhysRevLett.113.076802 ↗
25. 10.1021/nl504868p10.1021/nl504868p ↗
26. 10.1103/PhysRevLett.125.26740110.1103/PhysRevLett.125.267401 ↗
27. 10.1063/5.001309210.1063/5.0013092 ↗
28. 10.1038/s41467-021-26304-w10.1038/s41467-021-26304-w ↗
29. 10.1103/PhysRevLett.123.16740110.1103/PhysRevLett.123.167401 ↗
30. 10.1103/PhysRevX.8.03107310.1103/PhysRevX.8.031073 ↗
31. 10.1021/acsnano.5b0266510.1021/acsnano.5b02665 ↗
32. 10.1021/acsnano.5b0098510.1021/acsnano.5b00985 ↗
33. 10.1103/PhysRevB.94.08542910.1103/PhysRevB.94.085429 ↗
34. 10.1088/2053-1583/aacfb710.1088/2053-1583/aacfb7 ↗
35. 10.1021/nl502557g10.1021/nl502557g ↗
36. 10.1021/nl504500710.1021/nl5045007 ↗
37. 10.1021/acs.nanolett.6b0074810.1021/acs.nanolett.6b00748 ↗
38. 10.1103/PhysRevB.93.07541110.1103/PhysRevB.93.075411 ↗
39. 10.1038/nature2404310.1038/nature24043 ↗
40. 10.1038/ncomms521410.1038/ncomms5214 ↗
41. 10.1038/nphys394910.1038/nphys3949 ↗
42. 10.48550/arXiv.2303.1212210.48550/arXiv.2303.12122 ↗
43. 10.1109/8.863210.1109/8.8632 ↗
44. 10.1038/s41467-017-01870-010.1038/s41467-017-01870-0 ↗
45. 10.1103/PhysRevB.89.12530910.1103/PhysRevB.89.125309 ↗
46. 10.1021/acs.nanolett.7b0136510.1021/acs.nanolett.7b01365 ↗
47. 10.1038/nnano.2016.17110.1038/nnano.2016.171 ↗
48. 10.1021/acs.nanolett.5b0016010.1021/acs.nanolett.5b00160 ↗
49. 10.1103/PhysRevLett.114.06300110.1103/PhysRevLett.114.063001 ↗
50. 10.1021/acs.nanolett.6b0211810.1021/acs.nanolett.6b02118 ↗
51. 10.1103/PhysRevB.105.04530110.1103/PhysRevB.105.045301 ↗
52. 10.1039/C9NR04211C10.1039/C9NR04211C ↗
53. 10.1021/nl503799t10.1021/nl503799t ↗