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Photodetector fabrication based on heterojunction of CuO/SnO2/Si nanostructures

Photodetector fabrication based on heterojunction of CuO/SnO2/Si nanostructures Photodetector (PD) was successfully fabricated based on p-CuO NPs/n-SnO2 NWs/Si heterojunction. SnO2 nanowires (SnO2 NWs) on a silicon substrate were first synthesized via chemical vapour deposition (CVD) followed by the deposition of copper oxide nanoparticles (CuO NPs) using the drop-casting technique. The films were characterized by X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray spectrometer. Subsequently, two steps of PD fabrications were conducted for SnO2 NWs/Si and CuO/SnO2/Si films. The dark I–V characteristics of SnO2/Si and CuO/SnO2/Si heterojunction exhibit a rectification property. The PD response of SnO2/Si has a sharp cutoff at a wavelength around 390 nm, while the CuO/SnO2/Si nanostructures displayed response at wavelengths in the red UV region (~400 nm). The responsivity and quantum efficiency of SnO2/Si and CuO/SnO2/Si heterojunction are about 0.057–0.33 A/W and 17–94%, respectively. The results of p-n heterojunctions based on CuO NPs/SnO2 NWs/Si revealed an efficiency enhancement of the visible-blind SnO2 photodiodes representing a feasible route for building UV optoelectronic devices based on cost-effective materials. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of Materials Science Springer Journals

Photodetector fabrication based on heterojunction of CuO/SnO2/Si nanostructures

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References (46)

Publisher
Springer Journals
Copyright
Copyright © Indian Academy of Sciences 2022
ISSN
0250-4707
eISSN
0973-7669
DOI
10.1007/s12034-022-02672-x
Publisher site
See Article on Publisher Site

Abstract

Photodetector (PD) was successfully fabricated based on p-CuO NPs/n-SnO2 NWs/Si heterojunction. SnO2 nanowires (SnO2 NWs) on a silicon substrate were first synthesized via chemical vapour deposition (CVD) followed by the deposition of copper oxide nanoparticles (CuO NPs) using the drop-casting technique. The films were characterized by X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray spectrometer. Subsequently, two steps of PD fabrications were conducted for SnO2 NWs/Si and CuO/SnO2/Si films. The dark I–V characteristics of SnO2/Si and CuO/SnO2/Si heterojunction exhibit a rectification property. The PD response of SnO2/Si has a sharp cutoff at a wavelength around 390 nm, while the CuO/SnO2/Si nanostructures displayed response at wavelengths in the red UV region (~400 nm). The responsivity and quantum efficiency of SnO2/Si and CuO/SnO2/Si heterojunction are about 0.057–0.33 A/W and 17–94%, respectively. The results of p-n heterojunctions based on CuO NPs/SnO2 NWs/Si revealed an efficiency enhancement of the visible-blind SnO2 photodiodes representing a feasible route for building UV optoelectronic devices based on cost-effective materials.

Journal

Bulletin of Materials ScienceSpringer Journals

Published: May 16, 2022

Keywords: Photodetector; heterojunction; chemical vapour deposition; copper oxide nanoparticle

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