caa a22 4500 463211219 CHVBK 20180405153141.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s00339-007-3956-2 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3956-2 Properties of the oxygen vacancy in ZnO [Elektronische Daten] [D.M. Hofmann, D. Pfisterer, J. Sann, B.K. Meyer, R. Tena-Zaera, V. Munoz-Sanjose, T. Frank, G. Pensl] As-grown ZnO bulk crystals and crystals annealed in vacuum, oxygen, or zinc vapour were characterized by electrical, optical and magnetic resonance spectroscopy. The experiments show that the residual carrier concentration is caused by residual H, Al, Ga and oxygen vacancies (VO) in the material. Annealing the samples in O2 at about 1000°C (2atm, 20h) reduces the H and VO donor concentration by typically one order of magnitude. The photoluminescence and deep level transient spectroscopy (DLTS) results suggest a correlation between the broad unstructured emission at 2.45eV ("green band”) and a donor level 530meV below the conduction band, it is attributed to the VO 0/++transition. By using DLTS experiments with optical excitation it is possible to observe a metastable level 140meV below the conduction band which is assigned to the VO 2+/+ recharging. The results give evidence for the "negative-U” properties of the oxygen vacancy defects predicted by recent theoretical calculations. Springer-Verlag, 2007 Hofmann D.M. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut Pfisterer D. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut Sann J. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut Meyer B.K. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut Tena-Zaera R. Dept. Fisica Aplicada I Electromagnetisme, Universitat de Valencia, C/Dr. Moliner 50, 46100, Burjassot, Spain aut Munoz-Sanjose V. Dept. Fisica Aplicada I Electromagnetisme, Universitat de Valencia, C/Dr. Moliner 50, 46100, Burjassot, Spain aut Frank T. Institut für Angewandte Physik, Universität Erlangen-Nürnberg, Staudtstr. 7/Gebäude A3, 91058, Erlangen, Germany aut Pensl G. Institut für Angewandte Physik, Universität Erlangen-Nürnberg, Staudtstr. 7/Gebäude A3, 91058, Erlangen, Germany aut Applied Physics A Springer-Verlag 88/1(2007-07-01), 147-151 0947-8396 88:1<147 2007 88 339 https://doi.org/10.1007/s00339-007-3956-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3956-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hofmann D.M. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut NATIONALLICENCE 700 1- Pfisterer D. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut NATIONALLICENCE 700 1- Sann J. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut NATIONALLICENCE 700 1- Meyer B.K. I. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany aut NATIONALLICENCE 700 1- Tena-Zaera R. Dept. Fisica Aplicada I Electromagnetisme, Universitat de Valencia, C/Dr. Moliner 50, 46100, Burjassot, Spain aut NATIONALLICENCE 700 1- Munoz-Sanjose V. Dept. Fisica Aplicada I Electromagnetisme, Universitat de Valencia, C/Dr. Moliner 50, 46100, Burjassot, Spain aut NATIONALLICENCE 700 1- Frank T. Institut für Angewandte Physik, Universität Erlangen-Nürnberg, Staudtstr. 7/Gebäude A3, 91058, Erlangen, Germany aut NATIONALLICENCE 700 1- Pensl G. Institut für Angewandte Physik, Universität Erlangen-Nürnberg, Staudtstr. 7/Gebäude A3, 91058, Erlangen, Germany aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 88/1(2007-07-01), 147-151 0947-8396 88:1<147 2007 88 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer