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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18444
Title: Optical investigations on sputtered CuCl thin films
Authors: Natarajan G.
Mitra, Anirban
O'Reilly L.
Daniels S.
Cameron D.C.
McNally P.J.
Lucas O.F.
Bradley L.
Published in: Proceedings of Materials Research Society Symposium
Abstract: Copper (I) chloride (CuCl) is a potential candidate for ultra violet optoelectronics due to the fact that it is closely lattice matched with silicon, which makes it readily integrable with silicon device technology. The structural and optoelectronic properties of CuCl thin films deposited by RF magnetron sputtering are investigated. The crystallinity is studied using X-ray diffraction which confirms the growth of CuCl thin films with cubic zinc blende structure predominantly orientated in 〈111〉 direction. Excitonic transitions in the thin films were thoroughly investigated using optical absorbance and luminescence spectroscopies. Room temperature absorption spectroscopic analysis confirms the existence of two exciton peaks namely Z 12 and Z3 at 372 and 380 nm respectively. A strong UV emission is observed at room temperature in cathodoluminescence and photoluminescence spectra due to the recombination of Z3 exciton at approximately 384 nm. In the low temperature photoluminescence spectrum, a free exciton (Z3) and a bound exciton (I1) are observed. A variation of 1.3 nm to 10 nm was observed in the Z3 exciton line width from 10 K to 300 K. © 2006 Materials Research Society.
Citation: Proceedings of Materials Research Society Symposium, (2006), 151- 156. Boston, MA
URI: http://repository.iitr.ac.in/handle/123456789/18444
Issue Date: 2006
Keywords: Cathodoluminescence
Copper compounds
Magnetron sputtering
Optoelectronic devices
Photoluminescence
Silicon
X ray diffraction
Cubic zinc blende structure
Lattice matched
Silicon device
Ultra violet optoelectronics
Thin films
ISBN: 1558998454; 9781558998452
ISSN: 2729172
Author Scopus IDs: 7004035980
57209787039
15056648200
8842395600
26643140300
7102317773
9044337800
35756512900
Author Affiliations: Natarajan, G., Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland
Mitra, A., Optoelectronics Laboratory, Trinity College, Dublin-2, Ireland
O'Reilly, L., Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland
Daniels, S., Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland
Cameron, D.C., Advanced Surface Technology Research Laboratory (ASTRaL), Mikkeli Research Centre, Lappeenranta University of Technology, PL181, 50101 Mikkeli, Finland
McNally, P.J., Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland
Lucas, O.F., Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland
Bradley, L., Optoelectronics Laboratory, Trinity College, Dublin-2, Ireland
Corresponding Author: Natarajan, G.; Nanomaterials Processing Laboratory (NPL), School of Electronic Engineering, Dublin City University, Dublin-9, Ireland; email: gomathi.natarajan2@mail.dcu.ie
Appears in Collections:Conference Publications [PH]

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