Tan, Chee Leong and Wei, Heming and Thandavan, Tamil Many K. and Ramli, Rizal and Park, Minsu and Ahmad, Harith (2019) Broadband high responsivity large-area plasmonic-enhanced multilayer MoS2 on p-type silicon photodetector using Au nanostructures. Materials Research Express, 6 (10). p. 105090. ISSN 2053-1591, DOI https://doi.org/10.1088/2053-1591/ab3d67.
Full text not available from this repository.Abstract
High responsivity, large-area plasmonic-enhanced nanostructure photodetector based on multilayer (ML) molybdenum disulfide (MoS2) deposited on p-type Silicon (Si) substrates is reported. A large area ML-MoS2 is deposited onto the Si photodetector (PD) using a modified membrane filtration method. This large area ML-MoS2 and Au NSs on the p-Si form a cavity-like structure that dramatically enhances the incident light path. The increase of incident light path due to light trapping effect enhances the electron-hole pair generation tremendously. The plasmonic-enhanced ML MoS2 on Si PD has achieved a stable and repeatable photoresponse up to 37 A W-1, whereas the detectivity is around 1012 Jones at the broad wavelengths (405-780 nm) with a modulation frequency of 1 kHz. The enhancement of photoresponsivity is 8, 5.3 and 11 times with 5 V bias at an incident wavelength of 405 nm, 650 nm and 780 nm respectively as compared to the bare p-Si PD. The experimental results also show that the plasmonic-enhanced ML-MoS2 on Si PD exhibited fast photoresponse (rise time of ∼1 μs and fall time of ∼18 μs), which is much higher compared to typical transition metal dichalcogenide PD or single layer MoS2 based PD. These excellent performances show that the plasmonic-enhanced MoS2 structure is highly potential to apply in Si photovoltaics, visible range photodetection, and visible bio/chemical sensing application. © 2019 IOP Publishing Ltd.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | light trapping; nanostructured materials; optical surface waves; Photodetectors |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Jan 2020 03:02 |
| Last Modified: | 06 Jan 2020 03:02 |
| URI: | http://eprints.um.edu.my/id/eprint/23316 |
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