Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications

Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications

Nanostructured zinc oxide (ZnO) was successfully synthesized using an electric field-assisted aqueous solution (EFAS) technique. ZnO nanostructures were grown with different growth parameters and characterized for the structural, optical and electrical properties. The study employed ZnO-seeded porou...

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Main Author: Dalvand, Ramazanali
Format: Thesis
Language:English
Published: 2019
Subjects:
QC1 Physics (General)
Online Access:http://eprints.usm.my/48247/1/RAMAZANALI%20DALVAND%20cut.pdf
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spelling my-usm-ep.482472021-02-05T02:40:50Z Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications 2019-06 Dalvand, Ramazanali QC1 Physics (General) Nanostructured zinc oxide (ZnO) was successfully synthesized using an electric field-assisted aqueous solution (EFAS) technique. ZnO nanostructures were grown with different growth parameters and characterized for the structural, optical and electrical properties. The study employed ZnO-seeded porous silicon (PSi) to grow one-dimensional (1-D) ZnO nanostructures. ZnO nanorod arrays were synthesized via the optimization of current density by using EFAS method and the ZnO nanorods were grown on PSi substrates that were prepared via a photo electrochemical etching (PECE) technique. Vertically aligned needle-shaped ZnO sample prepared at a current density of 0.5 mA/cm2, growth temperature of 105 °C, precursor concentration of 50 mM, and growth duration of 60 minutes produced the optimal structural, morphological, and optical properties with the highest (002) XRD peak intensity. Moreover, photoluminescence (PL) data of the optimized sample revealed the highest near-band-edge emission to deep-level emission intensity ratio while Raman data showed the most intense E2 (high) phonon mode compared with that of other samples. Using the optimized precursor concentration in the EFAS method, 1-D ZnO nanostructure arrays were grown on PSi subtrates. 1-D ZnO nanorods with cone heads were produced using the EFAS technique when the growth parameters were tuned at 50 mM precursor concentration, 0.65 mA/cm2 current density, 105 °C growth temperature and 60 minutes growth duration. 2019-06 Thesis http://eprints.usm.my/48247/ http://eprints.usm.my/48247/1/RAMAZANALI%20DALVAND%20cut.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Fizik
institution Universiti Sains Malaysia
collection USM Institutional Repository
language English
topic QC1 Physics (General)
spellingShingle QC1 Physics (General)
Dalvand, Ramazanali
Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
description Nanostructured zinc oxide (ZnO) was successfully synthesized using an electric field-assisted aqueous solution (EFAS) technique. ZnO nanostructures were grown with different growth parameters and characterized for the structural, optical and electrical properties. The study employed ZnO-seeded porous silicon (PSi) to grow one-dimensional (1-D) ZnO nanostructures. ZnO nanorod arrays were synthesized via the optimization of current density by using EFAS method and the ZnO nanorods were grown on PSi substrates that were prepared via a photo electrochemical etching (PECE) technique. Vertically aligned needle-shaped ZnO sample prepared at a current density of 0.5 mA/cm2, growth temperature of 105 °C, precursor concentration of 50 mM, and growth duration of 60 minutes produced the optimal structural, morphological, and optical properties with the highest (002) XRD peak intensity. Moreover, photoluminescence (PL) data of the optimized sample revealed the highest near-band-edge emission to deep-level emission intensity ratio while Raman data showed the most intense E2 (high) phonon mode compared with that of other samples. Using the optimized precursor concentration in the EFAS method, 1-D ZnO nanostructure arrays were grown on PSi subtrates. 1-D ZnO nanorods with cone heads were produced using the EFAS technique when the growth parameters were tuned at 50 mM precursor concentration, 0.65 mA/cm2 current density, 105 °C growth temperature and 60 minutes growth duration.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Dalvand, Ramazanali
author_facet Dalvand, Ramazanali
author_sort Dalvand, Ramazanali
title Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
title_short Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
title_full Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
title_fullStr Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
title_full_unstemmed Zinc Oxide Nanostructures Grown Using Electric Field-Assisted Aqueous Solution Method For Uv Photodetector Applications
title_sort zinc oxide nanostructures grown using electric field-assisted aqueous solution method for uv photodetector applications
granting_institution Universiti Sains Malaysia
granting_department Pusat Pengajian Sains Fizik
publishDate 2019
url http://eprints.usm.my/48247/1/RAMAZANALI%20DALVAND%20cut.pdf
_version_ 1747821908692303872

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