Achieving nearly barrier free transport in high mobility ReS2 phototransistors with van der Waals contacts
Focusing on Rhenium disulfide (ReS2), a group VII transition metal di-chalcogenides (TMDC), being a promising contender system for future nanoelectronics and optoelectronics, here, we present an innovative pathway to experimentally achieve an almost barrier-free contact for the ReS2 field effect transistors (FETs) by using few layered graphene as contact electrodes, further supported by comparative first-principles analysis. Such barrier-free contacts enable the observation of metal-to-insulator transition with enhanced room temperature carrier mobility up to 25 cm2/Vs, linear Ids-Vds characteristic down to 80 K, along with the reduction of 1/f noise by more than two orders of magnitude. We further demonstrate a highly responsive gate- tunable phototransistor (R > 106 A/W) at an illumination wavelength of 633 nm. This work demonstrates a straightforward strategy to unlock the full potential of ReS2 for CMOS compatible future electronic and optoelectronic devices.
Authors
- Shubhrasish Mukherjee (ORCID: https://orcid.org/0000-0001-9380-4822)
- Md. Nur Hasan (ORCID: https://orcid.org/0000-0001-7826-5613)
- A. Thamizhavel (ORCID: https://orcid.org/0000-0003-1679-4370)
- Ruta Kulkarni (ORCID: https://orcid.org/0000-0001-8059-1063)
- Gautam Samanta (ORCID: https://orcid.org/0009-0000-6181-7960)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Shubhadip Moulick (ORCID: https://orcid.org/0000-0003-2870-6251)
- Debjani Karmakar (ORCID: https://orcid.org/0000-0002-9619-9493)
- Atindra Nath Pal (ORCID: https://orcid.org/0000-0001-9584-2283)
Institutions
- Tata Institute of Fundamental Research (IN)
- Uppsala University (SE)
- Bhabha Atomic Research Centre (IN)
- Homi Bhabha National Institute (IN)
- National Institute for Materials Science (JP)
- S.N. Bose National Centre for Basic Sciences (IN)
Publication Details
- Journal
- npj 2D Materials and Applications
- Published
- 2024-11-05
- DOI
- https://doi.org/10.1038/s41699-024-00507-3
- Citations
- 14
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.64
Funders
- Department of Science and Technology, Ministry of Science and Technology, India
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science
- Bhabha Atomic Research Centre
- Mission on Nano Science and Technology