Ripain, A. H. Abdullah and Zulkifli, N. A. A. and Tan, C. L. and Abd Majid, Wan Haliza and Zakaria, Rozalina (2022) Contributions of symmetric metal contacts on liquid exfoliation 2D-MoS2 flakes based MSM photodetector by spray pyrolysis: A CVD-free technique. Optical and Quantum Electronics, 54 (12). ISSN 0306-8919, DOI https://doi.org/10.1007/s11082-022-04253-y.
Full text not available from this repository.Abstract
Molybdenum disulphide (MoS2), is a typical layered of transition metal dichalcogenides which has been considered as a strong candidate in many optoelectronic devices due to its layer dependent bandgap and tunability properties. We reported a high yield synthesis of MoS2 flakes prepared using mixed solvent exfoliation followed by feasible and cost-effective spray pyrolysis deposition, in other words; chemical vapor deposition (CVD) free technique. The photodetector based on MoS2 flakes is fabricated using electron beam evaporation (e-beam) with symmetrical metals of Au and Ag contacts. The measurements were carried out under 632 nm illumination at power intensity ranging from 0.792 to 2.537 mW/cm(2). The symmetrical of Au-MoS2/Si-based PD showed the highest photoresponsivity of 128.0 mA/W and specific detectivity of 1.32 x 10(10) Jones. This work demonstrates fecund synthesis of good quality MoS2 flakes and the significance of metal choice in the photodetector as well as Schottky barrier height tuning which a good indicator for enhancing the device performance.
| Item Type: | Article |
|---|---|
| Funders: | SATU grant under University Malaya (Grant No: STU048-2021) |
| Uncontrolled Keywords: | MoS2-TMDC; Spray-pyrolysis; Metal-semiconductor-metal (MSM); Photodetector |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 14 Nov 2023 07:23 |
| Last Modified: | 14 Nov 2023 07:23 |
| URI: | http://eprints.um.edu.my/id/eprint/40711 |
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