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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18446
Title: Optical properties of CuCl films on silicon substrates
Authors: Mitra, Anirban
O'Reilly L.
Lucas O.F.
Natarajan G.
Danieluk D.
Bradley A.L.
McNally P.J.
Daniels S.
Cameron D.C.
Reader A.
Martinez-Rosas M.
Published in: Proceedings of Physica Status Solidi (B) Basic Research
Abstract: Semiconductor photonic emitters operating in the UV range remain an elusive goal. Attention has focused mainly on III-Nitrides. However a large lattice constant difference between the III-Nitride layers and compatible substrates results in high densities of misfit dislocations and consequently the device performance is adversely affected. An alternative novel material system, γ-CuCl on silicon, is investigated. Properties of the exciton luminescence from vacuum deposited CuCl films on Si(100) and Si(111) are studied using temperature dependent photoluminescence (PL) spectroscopy. Four peaks attributed to the free exciton (Z3) (3.203 eV), bound exciton (I1) (3.181 eV), bi-excitan (M) (3.159 eV) and bound bi-exciton (N1) (3.134 eV) are identified from the PL spectrum at 10 K. A free exciton peak at 3.230 eV is observed at room temperature. The binding energies for the bound exciton, bi-exciton and bound bi-exciton are determined. Parameters, extracted from the temperature dependence of the Z3 PL peak intensity, energy and line-width, have been compared with CuCl films on different substrates and in single crystal form. The luminescence properties of the CuCl on Si material system are found to compare well with reports for single crystal CuCl. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.
Citation: Proceedings of Physica Status Solidi (B) Basic Research, (2008), 2808- 2814
URI: https://doi.org/10.1002/pssb.200844021
http://repository.iitr.ac.in/handle/123456789/18446
Issue Date: 2008
Publisher: Wiley-VCH Verlag
Keywords: Binding energy
Chlorine compounds
Excitons
Luminescence
Nitrides
Optical films
Optical properties
Photoluminescence spectroscopy
Silicon wafers
Single crystals
Substrates
Temperature distribution
Device performance
Different substrates
Exciton luminescence
Luminescence properties
Novel material system
Silicon substrates
Temperature dependence
Temperature dependent photoluminescences
Copper compounds
ISSN: 3701972
Author Scopus IDs: 57209787039
15056648200
9044337800
7004035980
25654619100
35756512900
7102317773
8842395600
26643140300
7005446774
10143530500
Author Affiliations: Mitra, A., Physics Department, Trinity College, Dublin 2, Ireland, Dept. of Physics, School of Technology, Campus 3, Bhubaneswar-751024, Orissa, India
O'Reilly, L., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
Lucas, O.F., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
Natarajan, G., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
Danieluk, D., Physics Department, Trinity College, Dublin 2, Ireland
Bradley, A.L., Physics Department, Trinity College, Dublin 2, Ireland
McNally, P.J., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
Daniels, S., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
Cameron, D.C., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland, Advanced Surface Technology Research Laboratory (ASTRaL), Lappeenranta University of Technology, P.O. Box 181, 50101 Mikkeli, Finland
Reader, A., Nanomaterials Processing Laboratory, School of Electronic Engineering, Dublin City University, Dublin 9, Ireland, Innos Ltd., Faculty of Electronics and Computing, University of Southampton, Highfield, Southampton, S017 1BJ, United Kingdom
Martinez-Rosas, M., Physics Department, Trinity College, Dublin 2, Ireland, Universidad Autónoma de Baja California, Ensenada, Mexico
Corresponding Author: Mitra, A.; Dept. of Physics, School of Technology, Campus 3, Bhubaneswar-751024, Orissa, India; email: anmitra@yahoo.com
Appears in Collections:Conference Publications [PH]

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