| Fabrication of a transparent ultraviolet detector by using n-type Ga(2)O(3) and p-type Ga-doped SnO(2) core-shell nanowires. | |
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MedLine Citation:
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PMID: 22885569 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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This study investigates the feasibility of synthesizing high-density transparent Ga(2)O(3)/SnO(2):Ga core-shell nanowires on a sapphire substrate at 1000 °C by VLS. The doping Ga concentrations are 0.46, 1.07, 2.30 and 17.53 atomic%. The XRD spectrum and HR-TEM reveal Ga(2)O(3) and SnO(2) as having monoclinic and tetragonal rutile structures, respectively. Experimental results indicate that the XRD peak shift of SnO(2) to a larger angle increases with the increasing amount of Ga doping. According to the CL spectrum, SnO(2) and Ga(2)O(3) peak at approximately 528-568 nm and 422-424 nm, respectively. The maximum quantum efficiency of Ga(2)O(3)/SnO(2):Ga core-shell nanowires is around 0.362%. The UV light on-off current contrast ratio of Ga(2)O(3)/SnO(2):Ga core-shell nanowires is around 1066.7 at a bias of 5 V. Moreover, the dynamic response of Ga(2)O(3)/SnO(2):Ga core-shell nanowires has an on-off current contrast ratio of around 16. Furthermore, the Ga(2)O(3) region functions similar to a capacitor and continues to accumulate SnO(2):Ga excited electrons under UV light exposure. |
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Authors:
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Cheng-Liang Hsu; Ying-Ching Lu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-8-13 |
Journal Detail:
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Title: Nanoscale Volume: - ISSN: 2040-3372 ISO Abbreviation: Nanoscale Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-8-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101525249 Medline TA: Nanoscale Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Electrical Engineering, National University of Tainan, Tainan 700, Taiwan, ROC. clhsu@mail.nutn.edu.tw. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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