Structural and optical properties of Mn-doped CdS thin films prepared by ion implantation

被引：69
|
作者：
Chandramohan, S. [1 ]
Kanjilal, A. [2 ]
Tripathi, J. K. [1 ]
Sarangi, S. N. [1 ]
Sathyamoorthy, R. [3 ]
Som, T. [1 ]
机构：
[1] Inst Phys, Bhubaneswar 751005, Orissa, India
[2] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01328 Dresden, Germany
[3] Kongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, India
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 12期
关键词：
PHOTOLUMINESCENCE; NANOWIRES;
D O I：
10.1063/1.3151712
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on structural and optical properties of Mn-doped CdS thin films prepared by 190 keV Mn-ion implantation at different temperatures. Mn-ion implantation in the fluence range of 1 x 10(13)-1 x 10(16) ions cm(-2) does not lead to the formation of any secondary phase. However, it induces structural disorder, causing a decrease in the optical band gap. This is addressed on the basis of band tailing due to creation of localized energy states and Urbach energy calculations. Mn-doped samples exhibit a new band in their photoluminescence spectra at 2.22 eV, which originates from the d-d ((4)T(1) -> (6)A(1)) transition of tetrahedrally coordinated Mn(2+) ions. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3151712]
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页数：4
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