| Application of nanoporous silicon for a metal-semiconductor-metal visible light photodetector. | |
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MedLine Citation:
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PMID: 21446431 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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In this paper we present a study on the application of nanoporous silicon to an optoelectronic device called a nanoporous silicon metal-semiconductor-metal (MSM) visible light photodetector. This device was fabricated on a nanoporous silicon layer which was formed by electrochemical etching of a silicon wafer in a hydrofluoric acid solution under various anodization conditions such as the resistivity of the silicon wafer, current density, concentration of the hydrofluoric acid solution and anodization time. The structure of this device has two square Al/nanoporous silicon Schottky-barrier junctions on the silicon substrate and the electrode spacing is 500 microm. The experiment will study photoresponse and the response time of a nanoporous silicon MSM photodetector which was fabricated on the various porosity of a nanoporous silicon layer. It is found that when devices are fabricated on a higher porosity nanoporous silicon layer, the photoresponse of the device will expand toward the short-wavelength and the bandwidth of the spectrum response will cover visible light. In addition, it is found that the response time of the device decreases. |
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Authors:
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Narin Atiwongsangthong; Surasak Niemcharoen; Wisut Titiroongruang |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of nanoscience and nanotechnology Volume: 11 ISSN: 1533-4880 ISO Abbreviation: J Nanosci Nanotechnol Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-03-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101088195 Medline TA: J Nanosci Nanotechnol Country: United States |
Other Details:
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Languages: eng Pagination: 228-32 Citation Subset: IM |
Affiliation:
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Department of Electronics, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Charongkrung Road, Ladkrabang, Bangkok 10520, Thailand. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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