Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 127, Issue 5, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-021-04548-z
Keywords
ZnO nanofibers; Thin films; Porous silicon; Spray pyrolysis; UV Photodetection
Funding
- Thematic Research in Science and Technology Agency (ATRST)
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The study explored the deposition of ZnO thin films using spray pyrolysis technique on various substrates, with a focus on mesoporous silicon. The ZnO films deposited on mesoporous silicon exhibited a larger surface area and higher photocurrent compared to other structures.
ZnO thin films were successfully deposited via spray pyrolysis technique over various substrates, including glass, silicon, and mesoporous silicon (PSi). The effect of substrate type on the surface morphological, structural, and electrical properties of ZnO thin film was investigated. Scanning Electron Microscopy confirms the morphology of the meso-PSi substrate and displays the morphologies of the deposited ZnO. The (ZnO/PSi) heterojunction shows a porous ZnO layer with a large surface area by comparison to other structures. The patterns of X-ray Diffraction exposed that the deposited ZnO films have a hexagonal wurtzite polycrystalline structure. Ultraviolet (UV) metal-semiconductor-metal photodetectors have been investigated. The fabricated (ZnO/PSi) UV photodetector showed much higher photocurrent than other structures.
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