Abed, Shireen Mohammed (2025) Synthesis And Characterization Of Plasmonic-Assisted Photodetection Performance Based On Porous Silicon. PhD thesis, Perpustakaan Hamzah Sendut.
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Abstract
This thesis investigates the synthesis and characterization of metal-semiconductor-metal (msm) and p-n heterojunction organic-inorganic hybrid photodetectors based on the noble metal nanoparticles (nps) plasmonic-assisted and utilizing porous silicon (psi) substrates using a simple and low-cost method to enhance photodetection performance across the ultraviolet-visible-near infrared (uv-vis-nir) spectrum. First, psi were fabricated on bare silicon using photoelectrochemical etching. The resulting psi substrate demonstrated high porosity, with pore diameters ranging from 199 to 750 nm, an average pore length of 3.6 μm, and a root mean square (rms) roughness value of 70 nm. Field electron scanning electron microscopy (fesem) images revealed that zinc oxide (zno) seeds deposited using the low-cost vibration-assisted drop-casting method (vadcm) on psi effectively infiltrated the pores and adhered to the inner walls, which led to the growth of the zno nanorods (nrs) by modified hydrothermal method inside the pores in different directions and a more significant number of contact point connections between rods, whereas those deposited by radio frequency (rf) sputtering accumulated on the surface, which led to the hydrothermal growth of the zno nrs as a layer on the psi substrate.
| Item Type: | Thesis (PhD) |
|---|---|
| Subjects: | Q Science > QC Physics > QC1 Physics (General) |
| Divisions: | Institut Penyelidikan dan Teknologi Nano Optoelektronik (Institute of Nano Optoelectronics Research and Technology (INOR)) > Thesis |
| Depositing User: | Mr Hasmizar Mansor |
| Date Deposited: | 06 May 2026 02:13 |
| Last Modified: | 06 May 2026 02:13 |
| URI: | http://eprints.usm.my/id/eprint/64084 |
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