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Structural and photoluminescence properties of thermally evaporated $Cd_{1-x}Mn_xS$ nano-crystalline films

Reddy, Sreekantha D and Reddy, Raja D and Reddy, Koteeswara N and Gunasekhar, KR and Vijayalakshmi, RP and Reddy, BK and Reddy, Sreedhara P (2007) Structural and photoluminescence properties of thermally evaporated $Cd_{1-x}Mn_xS$ nano-crystalline films. In: Solid State Communications, 142 (8). pp. 466-471.

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Abstract

Thin films of $Cd_{1-x}Mn_xS (0\leq x \leq 0.5)$ were formed on glass substrates by resistive vacuum thermal evaporation. All the films were deposited at 300 K and the films were annealed at 373, 473 and 573 K for 1 h in a vacuum of $10^{-6}$ mbar. Atomic force microscopy (AFM) studies showed that all the films investigated were in nano-crystalline form with a grain size in the range 36–82 nm. All the films exhibited a wurtzite structure of the host material. The lattice parameters varied linearly with composition following Vegard’s law in the entire composition range. Photoluminescence studies showed that two distinct emission bands were observed for each $Cd_{1-x}Mn_xS$ compound. One corresponds to internal transition and the other one is due to the transition of $Mn^{2+}$ ions in interstitial sites or in small ‘Mn’ chalcogenic clusters.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: A. Diluted magnetic semiconductors;A. Cd1−xMnxS nano-crystalline films;D. Resistive thermal evaporation;E. Photoluminescence
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Aug 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/11662

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