Source:http://linkedlifedata.com/resource/pubmed/id/12368851
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6906
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| pubmed:dateCreated |
2002-10-7
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| pubmed:abstractText |
Materials that are good electrical conductors are not in general optically transparent, yet a combination of high conductivity and transparency is desirable for many emerging opto-electronic applications. To this end, various transparent oxides composed of transition or post-transition metals (such as indium tin oxide) are rendered electrically conducting by ion doping. But such an approach does not work for the abundant transparent oxides of the main-group metals. Here we demonstrate a process by which the transparent insulating oxide 12CaO x 7Al(2)O(3) (refs 7-13) can be converted into an electrical conductor. H(-) ions are incorporated into the subnanometre-sized cages of the oxide by a thermal treatment in a hydrogen atmosphere; subsequent irradiation of the material with ultraviolet light results in a conductive state that persists after irradiation ceases. The photo-activated material exhibits moderate electrical conductivity (approximately 0.3 S cm(-1)) at room temperature, with visible light absorption losses of only one per cent for 200-nm-thick films. We suggest that this concept can be applied to other main-group metal oxides, for the direct optical writing of conducting wires in insulating transparent media and the formation of a high-density optical memory.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Oct
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| pubmed:issn |
0028-0836
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
3
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| pubmed:volume |
419
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
462-5
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| pubmed:dateRevised |
2003-11-3
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| pubmed:year |
2002
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| pubmed:articleTitle |
Light-induced conversion of an insulating refractory oxide into a persistent electronic conductor.
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| pubmed:affiliation |
Transparent Electro-Active Materials Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation, KSP C-1232, 3-2-1 Sakado, Tatatsu-ku, Kawasaki 213-0012, Japan. k-hayashi@net.ksp.or.jp
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| pubmed:publicationType |
Journal Article
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