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CdO/PSi/Si photo detector
Azarian, A.
- Main Entry: Azarian, A.
- Title:CdO/PSi/Si photo detector.
- Publisher:2009.
- Abstract:In spite of various works which were carried out on CdO and porous Si (PSi) separately, the interesting properties of CdO/PSi/Si system are not known well. In this work, we study the photoconductivity of deposited CdO layer on PSi/Si system. PS and CdO layers were prepared by electrochemical anodisation of p-type crystalline silicon and pulsed laser deposition (PLD) of cadmium oxide target. Then samples were annealed in air at 500°C to increase their optical transmissions to a value as large as 90% for wavelengths above 700 nm. The XRD study reveals that the annealed films are polycrystalline with grain size of about 25 nm. SEM micrograph of the CdO/PSi/Si system indicates that CdO layer has sub micron granular structure on nano-porous silicon structure. The spectral responsivity of the photodiodes was measured in Vis.-near IR region. The light sensitivity showed linear behaviour vs. reversebias voltage from 0.1 V to 3 V. The dark and photocurrent characteristics of CdO/PSi/Si structure showed ms response time. Experimental data shows that samples have good response to near infrared wavelengths
- Notes:Sharif Repository
- Subject:CDO Layer.
- Subject:Photo detector.
- Subject:Porous silicon.
- Subject:Annealed films.
- Subject:Anodisation.
- Subject:Cadmium oxide.
- Subject:Crystalline silicons.
- Subject:Experimental data.
- Subject:Grain size.
- Subject:Granular structuress.
- Subject:Nano-porous silicon.
- Subject:Near-infrared wavelength.
- Subject:Near-IR.
- Subject:Optical transmissions.
- Subject:P-type.
- Subject:Photocurrent characteristics.
- Subject:PLD.
- Subject:Polycrystalline.
- Subject:Porous si.
- Subject:Response time.
- Subject:Reverse-bias.
- Subject:SEM micrographs.
- Subject:Spectral responsivity.
- Subject:Sub micron.
- Subject:XRD studies.
- Subject:Cadmium.
- Subject:Cadmium compounds.
- Subject:Detectors.
- Subject:Electric potential.
- Subject:Electrochemical etching.
- Subject:Light transmission.
- Subject:Programmable logic controllers.
- Subject:Pulsed laser deposition.
- Subject:Porous silicon.
- Added Entry:Iraji zad, A.
- Added Entry:Mahdavi, S. M.
- Added Entry:Samadpoor, M.
- Added Entry:Sharif University of Technology.
- Source: International Journal of Nanotechnology ; Volume 6, Issue 10-11 , 2009 , Pages 997-1005 ; 14757435 (ISSN)
- Web Site:https://www.inderscience.com/info/inarticle.php?artid=27562