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Title: Compositional effect on optical characteristic of solution grown Cd1-xMnxSe thin films
Authors: Sharma, R P
Patil, S V
Bhavsar, S V
Patil, A R
Dori, L
Issue Date: Dec-1999
Publisher: NISCAIR-CSIR, India
Abstract: The Cd1-xMn xSe thin films were grown from elemental selenium, sodium sulphite, cadmium chloride and MnCl2, onto glass substrates by a solution growth technique. As-deposited films were annealed at 600 K. The optical absorption of annealed Cd1-xMn xSe thin films with different values or composition parameter x was then studied in the energy range from 1.10 to 4.0 eV. The Cd0.5Mn0.5Se film showed allowed direct optical band gap with a room temperature gap or 1.58 ± 0.01 eV. Another direct transition observed in these films with x = 0.2, 0.3, 0.7 and 0.9 is ascribed to an optical transition from the crystal field spilt, valence band to the conduction band minimum. A third direct allowed transition from the spin-orbit valence band to the Conduction band is also observed in x = 0.2, 0.3, 0.7 and 0.9 films.
Page(s): 876-880
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.37(12) [December 1999]

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