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<strong>ZnO Nanoneedle Based Efficient UV-Photodetector</strong>

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Title Statement <strong>ZnO Nanoneedle Based Efficient UV-Photodetector</strong>
 
Added Entry - Uncontrolled Name MEMON, UZMA BANO; Indian Institute of Technology Bombay and Monash University Australia
Ibrahim, A ; Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai 400 001, India
Roy, S ; Centre for Research in Nanotechnology and Science, India Institute of Technology Bombay, Mumbai 400 076, India.
Duttaguptta, S P ; Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400 076, India
Kale, S ; Department of Applied Physics, Defence Institute of Advanced Technology, Pune 411 025, India
 
Uncontrolled Index Term Optpelectronics
ZnO, UV detector, ITO/ZnO ultraviolet photodetector
 
Summary, etc. This article reports the fabrication and characterization of nano-structured ITO/ZnO ultraviolet photodetector. A ZnO thin film was deposited by spray pyrolysis technique followed by interdigitated ITO as electrode deposition by RF sputter. Grazing angle x-ray diffraction (GIXRD) study indicates preferential growth along c-axis (002) of thin-film leading nanoneedle formation which was further confirmed by scanning electron microscopy (SEM) imaging. X-ray photoelectron spectroscopy (XPS) analysis of Oxygen 1s (O 1s) was carried out. A peak was observed at 531.8 eV indicating the presence of oxygen vacancy, 530 eV peak relates to the ZnO phase. The bandgap was determined by the Tauc plot; which was found to be 3.22eV. The donor carrier concentration is found to be 8.85x1018 cm-3 based on room temperature Hall measurement. A near ohmic behaviour was observed which can be interpreted by the existence of high carrier concentration in ZnO. This results in a very thin depletion width of the order of 5nm; therefore, charge transport through the junction is dominated by tunnelling of electrons through depletion width.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2022-01-17 13:37:25
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJPAP/article/view/53846
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 60, ##issue.no## 1 (2022): Indian Journal of Pure & Applied Physics
 
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