Zobrazeno 1 - 10
of 290
pro vyhledávání: '"H. W. Schock"'
Autor:
Reiner Klenk, Thomas Unold, Dieter Greiner, Christian A. Kaufmann, H.-W. Schock, Marc Daniel Heinemann, Rutger Schlatmann
Publikováno v:
IEEE Journal of Photovoltaics. 5:378-381
In this paper, the importance of sodium control in ZnO/Cu(In,Ga)Se 2 superstrate devices is studied. The superstrate devices were fabricated by the deposition of the Cu(In,Ga)Se 2 (CIGSe) absorber material directly onto intrinsic ZnO. Sodium is added
Autor:
H.-W. Schock, Ch. Genzel, Manuela Klaus, A. Weber, T. Rissom, H. Rodriguez-Alvarez, Roland Mainz, Christian A. Kaufmann
Publikováno v:
Journal of Alloys and Compounds. 588:644-647
We use synchrotron-based energy-dispersive X-ray diffraction to study in real-time the phase transformations during the incorporation of thermally evaporated In into a thin Cu film at 770 K. Most of the phase transitions are in agreement with the Cu
Autor:
Iver Lauermann, Alexander Steigert, A. Eicke, Christian A. Kaufmann, H.-W. Schock, Raquel Caballero, M. Nichterwitz
Publikováno v:
Acta Materialia. 63:54-62
The aim of this work is to study the effect of Na on the formation of MoSe 2 at the absorber/Mo back contact interface of Cu(In,Ga)Se 2 (CIGSe) thin-film solar cells at low process temperatures using polyimide foil as substrate material. As reported
Autor:
Asanga D. Ranasinghe, Xiangxin Liu, Monika Blum, Wanli Yang, Marcus Bär, Clemens Heske, Naba R. Paudel, H.-W. Schock, Miguel A. Contreras, Rommel Noufi, Oliver Fuchs, Yi Zhang, Stefan Krause, Regan G. Wilks, Sujitra J. Pookpanratana, Thomas Unold, Ingrid Repins, B. Marsen, S. Nishiwaki, Lothar Weinhardt, B.-A. Schubert, William N. Shafarman, Kannan Ramanathan, T. P. Niesen, F. Karg, Alvin D. Compaan
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 190:47-53
Department of Energy (DOE) [DE-AC02-05CH11231]; NREL [XXL-5-44205-12, ADJ-1-30630-12]; DOE-SAI University Photovoltaic Process and Product Development program; DFG Emmy-Noether-Programm and the Impuls- und Vernetzungsfonds of the Helmholtz-Associatio
Autor:
A. Weber, Christian A. Kaufmann, Sophie Gledhill, Daniel Abou-Ras, H.-W. Schock, Raquel Caballero, Roland Mainz, Manuela Klaus, H. Rodriguez-Alvarez
Publikováno v:
Solar Energy Materials and Solar Cells. 116:102-109
We study by means of real time X-ray diffraction the effect of the Cu and Na content on the diffusion of Ga during the formation of Cu(In,Ga)Se 2 films for solar cell applications. We analyze the diffraction data recorded during the annealing of stac
Autor:
V. Scheumann, H. Metzner, H.-W. Schock, J. Haarstrich, Christian A. Kaufmann, Carsten Ronning, M. Gnauck, Werner Wesch, W. Mannstadt, T. Rissom, M. Teichmann
Publikováno v:
Solar Energy Materials and Solar Cells. 116:43-48
High-efficiency Cu(In,Ga)Se2 thin-film solar cells typically include CdS buffer layers deposited in a chemical bath. In this work, Cu(In,Ga)Se2 devices are presented in which the CdS buffer layer was omitted completely. Instead, low-energy ion implan
Autor:
Marc Daniel Heinemann, H.-W. Schock, H. Rodriguez-Alvarez, A. Weber, Stephan Brunken, D. Thomas, Ch. Genzel, Christian A. Kaufmann, Thomas Unold, D. Greiner, Manuela Klaus, Roland Mainz, Jakob Lauche
Publikováno v:
Physical Review B. 93
Autor:
Martha Ch. Lux-Steiner, S. Merdes, H.-W. Schock, A. Meeder, Roland Mainz, Joachim Klaer, Reiner Klenk, Daniel Abou-Ras
Publikováno v:
Progress in Photovoltaics: Research and Applications. 21:88-93
In this letter, we report externally confirmed total area efficiencies reaching up to 12.9% for CdS/Cu(In,Ga)S2 based solar cells. These are the highest externally confirmed efficiencies for such cells. The absorbers were prepared from sputtered meta
Autor:
A. Undisz, H.-W. Schock, J. Haarstrich, Christian A. Kaufmann, Carsten Ronning, H. Metzner, T. Rissom
Publikováno v:
Thin Solid Films. 520:3657-3662
Cathodoluminescence (CL) has been measured at 10 K in cross-section and plan-view configuration on Cu(In,Ga)Se 2 thin films with Ga-grading as they are used in high-efficiency solar cells. Measurements on cross-section samples show the vertical profi
Autor:
Volker Hoffmann, Thorsten Rissom, Christian A. Kaufmann, Raquel Caballero, H.-W. Schock, Varvara Efimova
Publikováno v:
Progress in Photovoltaics: Research and Applications. 21:30-46
In order to transfer the potential for the high efficiencies seen for Cu(In,Ga)Se2 (CIGSe) thin films from co-evaporation processes to cheaper large-scale deposition techniques, a more intricate understanding of the CIGSe growth process for high-qual