| Title |
Optical Properties of Undoped and DopedZn_4SnSe_6Single Crystals |
| Authors |
이기형 ; 김덕태 ; 박광호 ; 현승철 ; 김형곤 ; 김남오 |
| Keywords |
chemical transport reaction method ; Zn_4SnSe_6 ; Zn_4SnSe_6:Co^{2+} ; optical absorption ; electron transition |
| Abstract |
Zn_4SnSe_{6} and Zn_4SnSe_{6} :Co^{2+} single crystals were by the chemical transport reaction method. They crystallized in the monoclinic structure. The direct energy band gaps of the Zn_4SnSe_{6} and Zn_4SnSe_{6} :Co^{2+}single crystals at 289k were found to be 2.146eV and 2.042eV. Optical absorption due to impurity in the Zn_4SnSe_{6} :Co^{2+}single crystal was observed and described as originating from the electron transition between energy levels of Co^{2+}ion sited at T_{d} symmetry point.y point. |