C. F. McConville

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P. D. C. King,1,* T. D. Veal,1 A. Schleife,2 J. Zúñiga-Pérez,3 B. Martel,3 P. H. Jefferson,1 F. Fuchs,2 V. Muñoz-Sanjosé,4 F. Bechstedt,2 and C. F. McConville1,† 1Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom 2Institut für Festkörpertheorie und -Optik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, D-07743 Jena, Germany(More)
We present ab-initio calculations of excited-state properties within single-particle and two-particle approaches in comparison with corresponding experimental results. For the theoretical treatment of the electronic structure, we compute eigenvalues and eigenfunctions by using a spatially nonlocal exchange-correlation potential. From this starting point,(More)
Photoluminescence PL has been observed from dilute InNxAs1−x epilayers grown by molecular-beam epitaxy. The PL spectra unambiguously show band gap reduction with increasing N content. The variation of the PL spectra with temperature is indicative of carrier detrapping from localized to extended states as the temperature is increased. The redshift of the(More)
Photoluminescence PL has been used as a means of unambiguously observing band gap reduction in InNAs epilayers grown by molecular beam epitaxy. The observed redshift in room temperature emission as a function of nitrogen concentration is in agreement with the predictions of the band anticrossing BAC model, as implemented with model parameters derived from(More)
L. F. J. Piper,1 Leyla Colakerol,1 P. D. C. King,2 A. Schleife,3 J. Zúñiga-Pérez,4,* Per-Anders Glans,1 Tim Learmonth,1 A. Federov,5 T. D. Veal,2 F. Fuchs,3 V. Muñoz-Sanjosé,4 F. Bechstedt,3 C. F. McConville,2 and Kevin E. Smith1,† 1Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA 2Department of Physics,(More)
Bulk crystals and thin films of PbTi(1-x)FexO3(-δ) (PTFO) are multiferroic, exhibiting ferroelectricity and ferromagnetism at room temperature. Here we report that the Ruddlesden-Popper phase Pbn+1(Ti(1-x)Fex)nO3(n+1)-δ forms spontaneously during pulsed laser deposition of PTFO on LaAlO3 substrates. High-resolution transmission electron microscopy, x-ray(More)
We demonstrate hybrid organic photovoltaic (HOPV) bilayer devices with very high open circuit voltages (VOC) of 1.18 V based on a sol-gel processed zinc oxide (ZnO) acceptor and a vacuum deposited boron subphthalocyanine chloride (SubPc) donor layer. X-ray photoelectron spectroscopy (XPS) and Kelvin Probe (KP) measurements of the ZnO/SubPc interface show(More)
OF DOCTORAL DISSERTATION HELSINKI UNIVERSITY OF TECHNOLOGY P. O. BOX 1000, FI-02015 TKK http://www.tkk.fi Author Abuduwayiti Aierken Name of the dissertation Manuscript submitted 20.05.2008 Manuscript revised 23.09.2008 Date of the defence 14.11.2008 Article dissertation (summary + original articles) Monograph Faculty Department Field of research(More)