| Deep-ultraviolet solar-blind photoconductivity of individual gallium oxide nanobelts. | |
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MedLine Citation:
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PMID: 21203645 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We designed solar-blind deep-ultraviolet semiconductor photodetectors using individual Ga2O3 nanobelts. The photoconductive behavior was systematically studied. The photodetectors demonstrate high selectivity towards 250 nm light, fast response times of less than 0.3 s, and a large photocurrent to dark current ratio of up to 4 orders of magnitude. The photoresponse parameters such as photocurrent, response time, and quantum efficiency depend strongly on the intensity of light, the detector environment, and the nanobelt size. The photoresponse mechanism was discussed, which was mainly attributed to the band bending, surface traps, and distribution of traps in the bandgap. Present Ga2O3 nanobelts can be exploited for future applications in photo sensing, light-emitting diodes, and optical switches. |
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Authors:
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Liang Li; Erwin Auer; Meiyong Liao; Xiaosheng Fang; Tianyou Zhai; Ujjal K Gautam; Alois Lugstein; Yasuo Koide; Yoshio Bando; Dmitri Golberg |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2011-01-04 |
Journal Detail:
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Title: Nanoscale Volume: 3 ISSN: 2040-3372 ISO Abbreviation: Nanoscale Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-03-11 Completed Date: 2011-07-19 Revised Date: 2011-08-25 |
Medline Journal Info:
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Nlm Unique ID: 101525249 Medline TA: Nanoscale Country: England |
Other Details:
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Languages: eng Pagination: 1120-6 Citation Subset: IM |
Affiliation:
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International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. Li.Liang@nims.go.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Conductometry
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instrumentation* Equipment Design Equipment Failure Analysis Gallium / chemistry*, radiation effects Light Nanostructures / chemistry*, radiation effects* Photometry / instrumentation* Solar Energy Ultraviolet Rays |
| Chemical | |
Reg. No./Substance:
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12024-21-4/gallium oxide; 7440-55-3/Gallium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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