Rohizat, Nurul Syazwani and Mohamad Ismail, Muhammad Nur Syafiq and Ahmad Fahri, Muhammad Aiman Saufi and Tan, Chee Leong and Zakaria, Rozalina (2023) Feasibility of integrating bimetallic au-ag non-alloys nanoparticles embedded in reduced graphene oxide photodetector. Photonic Sensors, 13 (3). ISSN 1674-9251, DOI https://doi.org/10.1007/s13320-023-0679-8.
Full text not available from this repository.Abstract
To coordinate the resonant wavelength of the plasmonic nanoparticles (NPs), the emission band of the reduced graphene oxide (rGO) photodetector at the NIR-region is crucial for the optimal plasmon-enhanced luminescence in the device. In contrast to monometallic NPs, where limits the dimensions and extended resonant wavelength, we integrated an Au-Ag bimetallic NPs (BMNPs) to enable resonance tuning at the longer wavelength at the excitation source of 785 nm. These features showed an increase in radiative recombination rates as well as the quantum yield efficiency of the device. The BMNPs were produced from the dewetting process of 600 degrees C and 500 degrees C, both at 1 min after the deposition thickness layer of Au (8 nm) and Ag (10 nm) on the Si substrate using the electron-beam evaporation process. Our BMNPs-rGO photodetector exhibited the responsivity of 2.25 center dot A W-1, Jones of specific detectivity of 2.45x10(11)Jones, and external quantum efficiency (EQE) of 356%. The rise time and fall time f
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Au-Ag bimetallic nanoparticles; rGO; Photodetector |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 04 Nov 2024 03:59 |
| Last Modified: | 04 Nov 2024 03:59 |
| URI: | http://eprints.um.edu.my/id/eprint/38547 |
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