Publications 2011


Bär, M.; Perrenoud, J.; Wilks, R.G.; Buecheler, S.; Kranz, L.; Fella, C.; Skarp, J.; Blum, M.; Yang, W.; Weinhardt, L.; Heske, C.; Tiwari, A.N.: CdCl2 activation-induced chemical interaction at the CdTe/ZnO1-XSX thin-film solar cell interface. In: 2011, 37th IEEE Photovoltaic Specialists Conference (PVSC 2011) : Seattle, Washington, USA, 19 - 24 June 2011. Piscataway, NJ: IEEE, 2011. - ISBN 978-1-4244-9965-6, p. 002701-002704
doi:10.1109/PVSC.2011.6186505


Bär, M.; Schubert, B.-A.; Marsen, B.; Krause, S.; Pookpanratana, S.; Unold, T.; Weinhardt, L.; Heske, C.; Schock, H.-W. : Native oxidation and Cu-poor surface structure of thin film Cu2ZnSnS4 solar cell absorbers. Applied Physics Letters 99 (2011), p. 112103/1-3
doi:10.1063/1.3637574


Bär, M.; Schubert, B.-A.; Marsen, B.; Krause, S.; Pookpanratana, S.; Unold, T.; Weinhardt, L.; Heske, C.; Schock, H.-W.: Impact of KCN etching on the chemical and electronic surface structure of Cu2ZnSnS4 thin-film solar cell absorbers. Applied Physics Letters 99 (2011), p. 152111/1-4
doi:10.1063/1.3650717


Bär, M.; Schubert, B.-A.; Marsen, B.; Schorr, S.; Wilks, R.G.; Weinhardt, L.; Pookpanratana, S.; Blum, M.; Krause, S.; Zhang, Y.; Yang, W.; Unold, T.; Heske, C.; Schock, H.-W.: Electronic structure of Cu2ZnSnS4 probed by soft x-ray emission and absorption spectroscopy. Physical Review B 84 (2011), p. 035308/1-6


Bär, M.; Schubert, B.-A.; Marsen, B.; Wilks, R.G.; Pookpanratana, S.; Blum, M.; Krause, S.; Unold, T.; Yang, W.; Weinhardt, L.; Heske, C.; Schock, H.-W.: Cliff-like conduction band offset and KCN-induced recombination barrier enhancement at the CdS/Cu2ZnSnS4 thin-film solar cell heterojunction. Applied Physics Letters 99 (2011), p. 222105/1-3
doi:10.1063/1.3663327


Bär, M.; Schubert, B.-A.; Wilks, R.G.; Marsen, B.; Zhang, Y.; Blum, M.; Krause, S.; Yang, W.; Unold, T.; Weinhardt, L.; Heske, C.; Schock, H.-W.: Identification of Impurity Phases in Cu2ZnSnS4 Thin-film Solar Cell Absorber Material by Soft X-ray Absorption Spectroscopy. In: Bell, L.D. [u.a.] [Eds.] : Compound semiconductors for energy applications and environmental sustainability - 2011 : symposium held April 25 - 29, 2011, San Francisco, California, U.S.A. ; [Symposium D "Compound Semiconductors for Energy Applications and Environmental Sustainability" ... at the 2011 MRS spring meeting]. New York, NY: Cambridge Univ. Press, 2011 (Materials Research Society symposium proceedings ; 1324). - ISBN 978-1-605-11301-2, p. mrs11-1324-d15-19/1-6


Horsley, K.; Pookpanratana, S.; Krause, S.; Hofmann, T.; Blum, M.; Weinhardt, L.; Bär, M.; George, K.; Van Duren, J.; Jackrel, D.; Heske, C.: Electronic and chemical properties of non-vacuum deposited chalcopyrite solar cells. In: IEEE [Ed.] : 37th IEEE Photovoltaic Specialists Conference, Washington, June 19-24, 2011. Piscataway, NJ, 2011. - ISBN 978-1-4244-9965-6, p. 000374-000378


Lauermann, I.; Bär, M.; Fischer, C.-H.: Synchrotron-based spectroscopy for the characterization of surfaces and interfaces in chalcopyrite thin-film solar cells. Solar Energy Materials and Solar Cells 95 (2011), p. 1495-1508
doi:10.1016/j.solmat.2010.12.042


Lewis, T.; Winter, B.; Stern, A.C.; Bär, M.D.; Mundy, C.J.; Tobias, D.J.; Hemminger, J.C.: Dissociation of Strong Acid Revisited: X-ray Photoelectron Spectroscopy and Molecular Dynamics Simulations of HNO3 in Water. The Journal of Physical Chemistry B 115 (2011), p. 9445 - 9451
doi:10.1021/jp205510q


Rusu, M.; Bär, M.; Fuertes Marrón, D.; Lehmann, S.; Schedel-Niedrig, Th.; Lux-Steiner, M.Ch.: Transport properties of CuGaSe2-based thin-film solar cells as a function of absorber composition. Thin Solid Films 519 (2011), p. 7304-7307
doi:10.1016/j.tsf.2011.01.185


Rusu, M.; Wiesner, S.; Würz, R.; Lehmann, S.; Doka-Yamigno, S.; Meeder, A.; Marron, D.F.; Bär, M.; Koteski, V.; Mahnke, H.E.; Arushanov, E.; Beckmann, J.; Höhn, K.; Fritsch, W.; Bohne, W.; Schubert-Bischoff, P.; Heuken, M.; Jager-Waldau, A.; Rumberg, A.; Schedel-Niedrig, T.: CuGaxSey chalcopyrite-related thin films grown by chemical close-spaced vapor transport (CCSVT) for photovoltaic application: Surface- and bulk material properties, oxidation and surface Ge-doping. Solar Energy Materials and Solar Cells 95 (2011), p. 1555 - 1580
doi:10.1016/j.solmat.2011.01.016


Sullivan, J.T.; Wilks, R.G.; Winkler, M.T.; Weinhardt, L.; Recht, D.; Said, A.J.; Newman, B.K.; Zhang, Y.; Blum, M.; Krause, S.; Yang, W.L.; Heske, C.; Aziz, M.J.; Bär, M.; Buonassisi, T.: Soft x-ray emission spectroscopy studies of the electronic structure of silicon supersaturated with sulfur. Applied Physics Letters 99 (2011), p. 142102/1-3
doi:10.1063/1.3643050


Weinhardt, L.; Fuchs, O.; Batchelor, D.; Bär, M.; Blum, M.; Denlinger, J.D.; Yang, W.; Schöll, A.; Reinert, F.; Umbach, E.; Heske, C.: Electron-hole correlation effects in core-level spectroscopy probed by the resonant inelastic soft x-ray scattering map of C60. The Journal of Chemical Physics 135 (2011), p. 104705/1-5
doi:10.1063/1.3633953


Weinhardt, L.; Weigand, M.; Fuchs, O.; Bär, M.; Blum, M.; Denlinger, J.D.; Yang, W.; Umbach, E.; Heske, C.: Nuclear dynamics in the core-excited state of aqueous ammonia probed by resonant inelastic soft x-ray scattering. Physical Review B 84 (2011), p. 104202/1-6


Wilks, R.G.; Contreras, M.A.; Lehmann, S.; Herrero-Albillos, J.; Tati Bismaths, L.; Kronast, F.; Noufi, R.; Bär, M.: Surface modification of polycrystalline Cu(In,Ga)Se2 thin-film solar cell absorber surfaces for PEEM measurements. In: IEEE [Ed.] : 37th IEEE Photovoltaic Specialists Conference (PVSC 2011): Seattle, Washington, USA, 19 - 24 June 2011. Piscataway, NJ: IEEE, 2011. - ISBN 978-1-4244-9965-6, p. 2515-2518
doi:10.1109/pvsc.2011.6186457


Wimmer, M.; Bär, M.; Gerlach, D.; Wilks, R.G.; Scherf, S.; Lupulescu, C.; Ruske, F.; Felix, R.; Hüpkes, J.; Gavrila, G.; Gorgoi, M.; Lips, K.; Eberhardt, W.; Rech, B.: Hard x-ray photoelectron spectroscopy study of the buried Si/ZnO thin-film solar cell interface: Direct evidence for the formation of Si-O at the expense of Zn-O bonds. Applied Physics Letters 99 (2011), p. 152104/1-3
doi:10.1063/1.3644084