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Exploring the optical and electrical properties of SrCu2O2: theoretical and experimental studies
|Mircea Modreanu 1, Michael J. Nolan 1, Simon D. Elliott 1, Ekaterina Chikoidze 2, Bernard Servet 3, Olivier Durand 3,7, Guy Garry 3, Guido Huyberechts 5, Evie L. Papadopoulou 4, Elias Aperathitis 4, Odette Chaix-Pluchery 6, Jean-Luc Deschanvres 6|
1. University College Cork, Tyndall National Institute (TYNDALL), Lee Maltings, Prospect Row, Cork, Ireland
In the framework of a European project, NATCO (Novel Advanced Transparent Conducting Oxides) we are working towards a deeper understanding of the optical properties and conduction mechanism of Cu based TCOs, which are currently the leading p-type TCO candidates. In this contribution, we review and correlate modelling studies and experimental results of optical and electrical properties of SrCu2O2. Using first principles modeling we have investigated point defects such as Cu and oxygen vacancies providing insights into the origin of p-type conduction. The experimental optical constants of both bulk and thin films of SrCu2O2 over a large spectral range have been inferred from spectroscopic ellipsometry and reflectance/transmission spectrophotometry measurements. Computed and experimental phonon modes obtained from Raman and Fourier Transform Infrared spectroscopy are reported for the tetragonal SrCu2O2 phase. In conjunction with XRD and FTIR, Raman measurements provide a more comprehensive understanding of the SrCu2O2 thin films crystalline structure. The correlation between optical and microstructural properties and the assignment of infrared and Raman active modes for SrCu2O2 in thin films deposited by Pulsed Laser deposition and MOCVD is discussed. Temperature-resolved optical and electrical properties of SrCu2O2 thin films will be also presented.
Presentation: Oral at E-MRS Fall Meeting 2008, Symposium B, by Mircea Modreanu
See On-line Journal of E-MRS Fall Meeting 2008
Submitted: 2008-05-19 18:46 Revised: 2009-06-07 00:48