The crystal structure of CdGa₂Se₄ single crystal belongs to the defect chalcopyrite (space group S₄??) family, and the lattice constants are a=5.756A, c=10.820A. Optical absorption studies showed that CdGa₂Se₄ and CdGa₂Se₄: Co single ...
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https://www.riss.kr/link?id=A2072660
1986
Korean
404
학술저널
47-505360(505314쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
The crystal structure of CdGa₂Se₄ single crystal belongs to the defect chalcopyrite (space group S₄??) family, and the lattice constants are a=5.756A, c=10.820A. Optical absorption studies showed that CdGa₂Se₄ and CdGa₂Se₄: Co single ...
The crystal structure of CdGa₂Se₄ single crystal belongs to the defect chalcopyrite (space group S₄??) family, and the lattice constants are a=5.756A, c=10.820A.
Optical absorption studies showed that CdGa₂Se₄ and CdGa₂Se₄: Co single crystals have indirect band gaps of 2.29 and 2.18eV at room temperature, respectively.
The absorption peaks due to the impurity cobalt in CdGa₂Se₄: Co single crystal doped cobalt as impurity are appeared at 775nm??, 1580nm?? 2420nm??. The three absorption peaks are attributed to ⁴A₂(⁴F) →⁴T₁(⁴P), ⁴A₂(⁴F) →⁴T₁(⁴F), ⁴A₂(⁴F) → ⁴T₂(⁴F) transition of ?? ion entered the substitutional tetrahedral sites. The crystal field parameter Dq and the Reach parameter B were found to be ??.
The temperature coefficients are ?? and ?? for CdGa₂Se₄ single crystals, ?? and ?? for CdGa₂Se₄: single crystals, respectively.
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