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Anisotropy of the spectroscopy properties of the wurtz-stannite Cu2ZnGeS4 single crystals

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Title: Anisotropy of the spectroscopy properties of the wurtz-stannite Cu2ZnGeS4 single crystals
Authors: Levcenco, S.1, Dumcenco, D.1, Huang, Y.S.1 ysh@mail.ntust.edu.tw, Tiong, K.K.2, Du, C.H.3
Source: Optical Materials. Nov2011, Vol. 34 Issue 1, p183-188. 6p.
Subjects: Anisotropy, Stannite, Sulfides, Crystal optics, Electrolytes, Chemical vapor deposition, Phase transitions, Temperature effect
Abstract: Abstract: In this study, the near band edge anisotropic optical properties of wurtz-stannite (WS) Cu2ZnGeS4 single crystals were characterized using polarization-dependent transmittance and electrolyte electroreflectance (EER) techniques. Single crystals of Cu2ZnGeS4 were grown by chemical vapor transport method using iodine as a transport agent. Analysis of absorption spectra revealed indirect allowed transitions for Cu2ZnGeS4 with the band gaps of 2.02 (2.07) and 2.08 (2.14) eV for E‖b and Е‖a polarization configurations at 300 (10) K. The room-temperature EER spectra in the vicinity of the direct band edge showed anisotropic transitions at around 2.38, 2.44 and 2.45eV for E‖b, Е‖a and Е‖c polarizations, respectively. Based on the experimental observations and recent band-structure calculations a plausible band diagram near band edge of WS-Cu2ZnGeS4 was constructed. [Copyright &y& Elsevier]
Copyright of Optical Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 66662220
AccessLevel: 6
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PubTypeId: academicJournal
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  Data: Anisotropy of the spectroscopy properties of the wurtz-stannite Cu<subscript>2</subscript>ZnGeS<subscript>4</subscript> single crystals
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  Data: <searchLink fieldCode="AR" term="%22Levcenco%2C+S%2E%22">Levcenco, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dumcenco%2C+D%2E%22">Dumcenco, D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Huang%2C+Y%2ES%2E%22">Huang, Y.S.</searchLink><relatesTo>1</relatesTo><i> ysh@mail.ntust.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Tiong%2C+K%2EK%2E%22">Tiong, K.K.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Du%2C+C%2EH%2E%22">Du, C.H.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Optical+Materials%22">Optical Materials</searchLink>. Nov2011, Vol. 34 Issue 1, p183-188. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Anisotropy%22">Anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Stannite%22">Stannite</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfides%22">Sulfides</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+optics%22">Crystal optics</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytes%22">Electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+vapor+deposition%22">Chemical vapor deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink>
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  Data: Abstract: In this study, the near band edge anisotropic optical properties of wurtz-stannite (WS) Cu2ZnGeS4 single crystals were characterized using polarization-dependent transmittance and electrolyte electroreflectance (EER) techniques. Single crystals of Cu2ZnGeS4 were grown by chemical vapor transport method using iodine as a transport agent. Analysis of absorption spectra revealed indirect allowed transitions for Cu2ZnGeS4 with the band gaps of 2.02 (2.07) and 2.08 (2.14) eV for E‖b and Е‖a polarization configurations at 300 (10) K. The room-temperature EER spectra in the vicinity of the direct band edge showed anisotropic transitions at around 2.38, 2.44 and 2.45eV for E‖b, Е‖a and Е‖c polarizations, respectively. Based on the experimental observations and recent band-structure calculations a plausible band diagram near band edge of WS-Cu2ZnGeS4 was constructed. [Copyright &y& Elsevier]
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  Label:
  Group: Ab
  Data: <i>Copyright of Optical Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.optmat.2011.08.005
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 183
    Subjects:
      – SubjectFull: Anisotropy
        Type: general
      – SubjectFull: Stannite
        Type: general
      – SubjectFull: Sulfides
        Type: general
      – SubjectFull: Crystal optics
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      – SubjectFull: Electrolytes
        Type: general
      – SubjectFull: Chemical vapor deposition
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Temperature effect
        Type: general
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      – TitleFull: Anisotropy of the spectroscopy properties of the wurtz-stannite Cu2ZnGeS4 single crystals
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            NameFull: Levcenco, S.
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            NameFull: Dumcenco, D.
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            NameFull: Huang, Y.S.
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            NameFull: Tiong, K.K.
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              M: 11
              Text: Nov2011
              Type: published
              Y: 2011
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