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Synthesis and Luminescence Properties of Chalcopyrite-Type CuAlS2

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Abstract:

Copper aluminum disulfide (CuAlS2) powders were synthesized in an evacuated ampoule at elevated temperatures. X-ray diffraction analysis revealed that the powders heated at temperatures higher than 800oC were single-phase CuAlS2. In the cathodoluminescence (CL) spectra measured at room temperature, the powders heated at temperatures higher than 600oC exhibited a visible emission peak at approximately 1.8 eV and a distinct ultraviolet emission peak at 3.45 eV. The powder heated at 700oC showed the maximum intensity of ultraviolet emission which is considered to be associated with excitons.

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Periodical:

Key Engineering Materials (Volume 301)

Pages:

177-180

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.301.177

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Online since:

January 2006

Authors:

Yuichiro Kuroki, Tomoichiro Okamoto, Masasuke Takata

Keywords:

Cathodoluminescence, Chalcopyrite Semiconductor, Excitonic Emission, Ultraviolet Emission

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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