Wurtzite CuGaO: A New Direct and Narrow Band Gap Oxide Semiconductor Applicable as a Solar Cell Absorber.
An oxide semiconductor β-CuGaO with a wurtzite-derived β-NaFeO structure has been synthesized. Structural characterization has been carried out by Rietveld analysis using XRD and SAED, and it was shown that the lattice size is very close to that of zinc oxide. The optical absorption spectrum indicat...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 9; pp. 3378 - 3382 |
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| Autores principales: | , , , , , |
| Formato: | Artículo |
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American Chemical Society
3/5/2014
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=95084472&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 95084472 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 3/5/2014 vid: 136 iid: 9 pid: 997 pub: American Chemical Society artinfo: ui: 95084472 10.1021/ja501614n ppf: 3378 ppct: 4 formats: tig: atl: Wurtzite CuGaO: A New Direct and Narrow Band Gap Oxide Semiconductor Applicable as a Solar Cell Absorber. aug: au: Takahisa Omata Hiraku Nagatani Issei Suzuki Masao Kita Hiroshi Yanagi Naoki Ohashi affil: Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan Department of Mechanical Engineering, Toyama National College of Technology, Toyama 939-8630, Japan Interdisciplinary Graduate School of Medical & Engineering Material Science & Technology,University of Yamanashi, Kofu, Yamanashi 400-8510, Japan National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan su: Semiconductor synthesis Wurtzite Structural analysis (Science) Rietveld refinement Thermal electromotive force Density functional theory Electronic structure Optical properties of semiconductors sug: subj: Semiconductor synthesis Wurtzite Structural analysis (Science) Rietveld refinement Thermal electromotive force Density functional theory Electronic structure Optical properties of semiconductors ab: An oxide semiconductor β-CuGaO with a wurtzite-derived β-NaFeO structure has been synthesized. Structural characterization has been carried out by Rietveld analysis using XRD and SAED, and it was shown that the lattice size is very close to that of zinc oxide. The optical absorption spectrum indicated that the band gap is 1.47 eV, which matches the band gap required to achieve the theoretical maximum conversion efficiency for a single-junction solar cell. The thermoelectromotive force indicated p-type conduction in its intrinsic state. Density functional theory calculations were performed to understand the electronic structure and optical properties of the semiconductor. These calculations indicated that β-CuGaO is a direct semiconductor and intense absorption of light occurs near the band edge. These properties render this new material promising as an absorber in solar cells. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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