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Generation of extremely photo-luminescent CuBr crystallites in the CuCl/KBr system (CuCl film on KBr crystal)

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Title: Generation of extremely photo-luminescent CuBr crystallites in the CuCl/KBr system (CuCl film on KBr crystal)
Authors: Kondo, S. d930963@icpc00.icpc.fukui-u.ac.jp, Mikami, K.1, Saito, T.1
Source: Optical Materials. Jun2008, Vol. 30 Issue 10, p1473-1477. 5p.
Subjects: Spectrum analysis, Solid state electronics, Light sources, Product quality
Abstract: Abstract: The behavior of thermally-induced generation of extremely photo-luminescent CuBr crystallites in the previously reported CuCl/KBr system has been investigated by in situ optical absorption and photoluminescence (PL) spectroscopy. Upon suitable annealing of the system, CuCl can be fully changed into CuBr characterized by extremely-high-intensity PL. The PL spectrum is generally composed of three emission bands due to free-exciton, bound-exciton and defect-related emissions, with their intensity ratio depending on the annealing history. For a suitably-annealed system, in which the bound-exciton emission is maximized and the defect-related one is minimized at 77K, extremely-high-intensity free-exciton PL is observed at room temperature. The integrated intensity of the room temperature free-exciton PL is ∼103 times larger than that of CuCl, despite the general recognition that PL from CuBr is much weaker than that from CuCl. [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: 32074446
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Generation of extremely photo-luminescent CuBr crystallites in the CuCl/KBr system (CuCl film on KBr crystal)
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  Data: <searchLink fieldCode="AR" term="%22Kondo%2C+S%2E%22">Kondo, S.</searchLink><i> d930963@icpc00.icpc.fukui-u.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Mikami%2C+K%2E%22">Mikami, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Saito%2C+T%2E%22">Saito, T.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Optical+Materials%22">Optical Materials</searchLink>. Jun2008, Vol. 30 Issue 10, p1473-1477. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+state+electronics%22">Solid state electronics</searchLink><br /><searchLink fieldCode="DE" term="%22Light+sources%22">Light sources</searchLink><br /><searchLink fieldCode="DE" term="%22Product+quality%22">Product quality</searchLink>
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  Label: Abstract
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  Data: Abstract: The behavior of thermally-induced generation of extremely photo-luminescent CuBr crystallites in the previously reported CuCl/KBr system has been investigated by in situ optical absorption and photoluminescence (PL) spectroscopy. Upon suitable annealing of the system, CuCl can be fully changed into CuBr characterized by extremely-high-intensity PL. The PL spectrum is generally composed of three emission bands due to free-exciton, bound-exciton and defect-related emissions, with their intensity ratio depending on the annealing history. For a suitably-annealed system, in which the bound-exciton emission is maximized and the defect-related one is minimized at 77K, extremely-high-intensity free-exciton PL is observed at room temperature. The integrated intensity of the room temperature free-exciton PL is ∼103 times larger than that of CuCl, despite the general recognition that PL from CuBr is much weaker than that from CuCl. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
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  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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        Value: 10.1016/j.optmat.2007.11.021
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      – Code: eng
        Text: English
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    Subjects:
      – SubjectFull: Spectrum analysis
        Type: general
      – SubjectFull: Solid state electronics
        Type: general
      – SubjectFull: Light sources
        Type: general
      – SubjectFull: Product quality
        Type: general
    Titles:
      – TitleFull: Generation of extremely photo-luminescent CuBr crystallites in the CuCl/KBr system (CuCl film on KBr crystal)
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              Text: Jun2008
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