Benkert, A.; Blum, M.; Meyer, F.; Wilks, R.G.; Yang, W.; Bär, M.; Reinert, F.; Heske, C.; Weinhardt, L.: Setup for in situ investigation of gases and gas/solid interfaces by soft x-ray emission and absorption spectroscopy. Review of Scientific Instruments 85 (2014), p. 015119/1-5
doi:10.1063/1.4862059

Bär, M.; Starr, D.E.; Lambertz, A.; Holländer, B.; Alsmeier, J.-H.; Weinhardt, L.; Blum, M.; Gorgoi, M.; Yang, W.; Wilks, R.G.; Heske, C.:Microcrystalline silicon oxides for silicon-based solar cells: Impact of the O/Si ratio on the electronic structure. In: Louay A. Eldada ... [Ed.] : Thin Films for Solar and Energy Technology VI. SPIE, 2014 (Proeedings of the SPIE ; 9177). - ISBN 978-1-6284-1204-8, p. 91770E/1-3
doi:10.1117/12.2061902

Gerlach, D.; Wimmer, M.; Wilks, R.G.; Felix, R.; Kronast, F.; Ruske, F.; Baer, M.: The complex interface chemistry of thin-film silicon/zinc oxide solar cell structures. Physical Chemistry Chemical Physics 16 (2014), p. 26266-26272
doi:10.1039/c4cp03364g

Horsley, K.; Beal, R.J.; Wilks, R.G.; Blum, M.; Haeming, M.; Hanks, D.A.; Weir, M.G.; Hofmann, T.; Weinhardt, L.; Bär, M.; Potter, B.G.; Heske, C.: Impact of annealing on the chemical structure and morphology of the thin-film CdTe/ZnO interface. Journal of Applied Physics 116 (2014), p. 024312/1-12
doi:10.1063/1.4890235

Jeyachandran, Y.L.; Meyer, F.; Nagarajan, S.; Benkert, A.; Bär, M.; Blum, M.; Yang, Y.; Reinert, F.; Heske, C.; Weinhardt, L.; Zharnikov, M.:Ion-solvation-induced molecular reorganization in liquid water probed by resonant inelastic soft x-ray scattering. Journal of Physical Chemistry Letters 5 (2014), p. 4143-4148
doi:10.1021/jz502186a

Lehmann, J.; Lehmann, S.; Lauermann, I.; Rissom, T.; Kaufmann, C.A.; Lux-Steiner, M.C.; Bär, M.; Sadewasser, S.: Reliable wet-chemical cleaning of natively oxidized high-efficiency Cu(In,Ga)Se2 thin-film solar cell absorbers. Journal of Applied Physics 116 (2014), p. 233502/1-11
doi:10.1063/1.4903976

Lips, K.; Starr, D.; Bär, M.; Schulze, T.; Fenske, F.; Christiansen, S.; van de Krol, R.; Raoux, S.; Reichardt, G.; Schäfers, F.; Hendel, S.; Follath, R.; Bahrdt, J.; Scheer, M.; Wüstefeld, G.; Kuske, P.; Hävecker, M.; Knop-Gerickce, A.; Schlögl, R.; Rech, B.: EMIL: The Energy Materials In Situ Laboratory Berlin. In: IEEE 40th Photovoltaic Specialist Conference (PVSC) 2014 : Denver, Colorado, USA, 8 - 13 June 2014. IEEE, 2014. - ISBN 978-1-4799-4398-2, p. 698-700
doi:10.1109/PVSC.2014.6925017

Meyer, F.; Blum, M.; Benkert, A.; Hauschild, D.; Nagarajan, S.; Wilks, R.G.; Andersson, J.; Yang, W.; Zharnikov, M.; Bär, M.; Heske, C.; Reinert, F.; Weinhardt, L.: "Building-block picture" of the electronic structure of aqueous cysteine derived from resonant inelastic soft x-ray scattering. Journal of Physical Chemistry B 118 (2014), p. 13142-13150
doi:10.1021/jp5089417

Bär, M.; Klaer, J.; Felix, R.; Barreau, N.; Weinhardt, L.; Wilks, R.G.; Heske, C.; Schock, H.-W.: Surface Off-Stoichiometry of CuInS2 Thin-Film Solar Cell Absorbers. IEEE Journal of Photovoltaics 3 (2013), p. 828-832
doi:10.1109/JPHOTOV.2012.2228299

Bär, M.; Klaer, J.; Weinhardt, L.; Wilks, R.G.; Krause, S.; Blum, M.; Yang, W.; Heske, C.; Schock, H.-W.: Cu2-xS Surface Phases and Their Impact on the Electronic Structure of CuInS2 Thin Films - A Hidden Parameter in Solar Cell Optimization. Advanced Engineering Materials 3 (2013), p. 777-781
doi:10.1002/aenm.201200946

Bär, M.; Pookpanratana, S.; Weinhardt, L.; Wilks, R.-G.; Schubert, B.-A.; Marsen, B.; Unold, T.; Blum, M.; Krause, S.; Zhang, Y.; Ranasinghe, A.; Ramanathan, K.; Repins, I.; Contreras, M.-A.; Nishiwaki, S.; Liu, X.; Paudel, N.-R.; Fuchs, O.; Niesen, T.-P.; Yang, W.; Karg, F.; Compaan, A.-D.; Shafarman, W.-N.; Noufi, R.; Schock, H.-W.; Heske, C.: Soft X-rays shedding light on thin-film solar cell surfaces and interfaces. Journal of Electron Spectroscopy and Related Phenomena 190 (2013), p. 47-53

Bär, M.; Theisen, J.-P.; Wilks, R.G.; Erfurth, F.; Felix, R.; Gerlach, D.; Haas, S.; Tati Bismaths, L.; Reinert, F.; Kronast, F.; Niesen, T.P.; Palm, J.; Visbeck, S.; Weinhardt, L.: Lateral inhomogeneity of the Mg/(Zn+Mg) composition at the (Zn,Mg)O/CuIn(S,Se)2 thin-film solar cell interface revealed by photoemission electron microscopy. Journal of Applied Physics 113 (2013), p. 193709/1-5
doi:10.1063/1.4804413

Gerlach, D.; Wilks, R.G.; Wippler, D.; Wimmer, M.; Lozac'h, M.; Félix, R.; Mück, A.; Meier, M.; Ueda, S.; Yoshikawa, H.; Gorgoi, M.; Lips, K.; Rech, B.; Sumiya, M.; Hüpkes, J.; Kobayashi, K.; Bär, M.: The silicon/zinc oxide interface in amorphous silicon-based thin-film solar cells: Understanding an empirically optimized contact. Applied Physics Letters 103 (2013), p. 023903/1-5
doi:10.1063/1.4813448

Gerlach, D.; Wippler, D.; Wilks, R.G.; Wimmer, M.; Lozac'h, M.; Felix, R.; Ueda, S.; Yoshikawa, H.; Lips, K.; Rech, B.; Sumiya, M.; Kobayashi, K.; Gorgoi, M.; Hüpkes, J.; Bär, M.: p-Type a-Si:H/ZnO:Al and μc-Si:H/ZnO:Al Thin-Film Solar Cell Structures-A Comparative Hard X-Ray Photoelectron Spectroscopy Study. IEEE Journal of Photovoltaics 3 (2013), p. 483-487
doi:10.1109/JPHOTOV.2012.2224644

Hofmann, T.; Yu, T.H.; Folse, M.; Weinhardt, L.; Bär, M.; Zhang, Y.; Merinov, B.V.; Myers, D.J.; Goddard, W.A.; Heske, C.: Reply to "Comment on 'Using Photoelectron Spectroscopy and Quantum Mechanics to Determine d-Band Energies of Metals for Catalytic Applications'". Journal of Physical Chemistry C 117 (2013), p. 6916-6917
doi:10.1021/jp401620e

Meyer, F.; Weinhardt, L.; Blum, M.; Bär, M.; Wilks, R.G.; Yang, W.; Heske, C.; Reinert, F.: Non-equivalent carbon atoms in the resonant inelastic soft X-ray scattering map of cysteine. Journal of Chemical Physics 138 (2013), p. ARTN 034306
doi:10.1063/1.4774059

Weinhardt, L.; Blum, M.; Fuchs, O.; Benkert, A.; Meyer, F.; Bär, M.; Denlinger, J.D.; Yang, W.; Reinert, F.; Heske, C.: RIXS investigations of liquids, solutions, and liquid/solid interfaces. Journal of Electron Spectroscopy and Related Phenomena 188 (2013), p. 111-120
doi:10.1016/j.elspec.2012.10.006

Weinhardt, L.; Blum, M.; Fuchs, O.; Pookpanratana, S.; George, K.; Cole, B.; Marsen, B.; Gaillard, N.; Miller, E.; Ahn, K.-S.; Shet, S.; Yan, Y.; Al-Jassim, M.-M.; Denlinger, J.-D.; Yang, W.; Bär, M.; Heske, C.: Soft X-ray and electron spectroscopy to determine the electronic structure of materials for photoelectrochemical hydrogen production. Journal of Electron Spectroscopy and Related Phenomena 190 (2013), p. 106-112

Wimmer, M.; Gerlach, D.; Wilks, R.-G.; Scherf, S.; Félix, R.; Lupulescu, C.; Ruske, F.; Schondelmaier, G.; Lips, K.; Hüpkes, J.; Gorgoi, M.; Eberhardt, W.; Rech, B.; Bär, M.: Chemical interaction at the buried silicon/zinc oxide thin-film solar cell interface as revealed by hard x-ray photoelectron spectroscopy. Journal of Electron Spectroscopy and Related Phenomena 190 (2013), p. 309-313

Blum, M.; Odelius, M.; Weinhardt, L.; Pookpanratana, S.; Bär, M.; Zhang, Y.; Fuchs, O.; Yang, W.; Umbach, E.; Heske, C.: Ultrafast Proton Dynamics in Aqueous Amino Acid Solutions Studied by Resonant Inelastic Soft X-ray Scattering. Journal of Physical Chemistry B 116 (2012), p. 13757-13764
doi:10.1021/jp302958j

Bär, M.; Schubert, B.-A.; Marsen, B.; Wilks, R.G.; Blum, M.; Krause, S.; Pookpanratana, S.; Zhang, Y.; Unold, T.; Yang, W.; Weinhardt, L.; Heske, C.; Schock, H.-W.: Cu2ZnSnS4 thin-film solar cell absorbers illuminated by soft x-rays. Journal of Materials Research 27 (2012), p. 1097-1104
doi:10.1557/jmr.2012.59

Hanks, D.; Weir, M.; Horsley, K.; Hofmann, T.; Weinhardt, L.; Bär, M.; Barricklow, K.; Kobyakov, P.; Sampath, W.; Heske, C.: Photoemission Study of CdTe Surfaces After Low-Energy Ion Treatments. In: 38th IEEE Photovoltaic Specialists Conference (PVSC 2012) : Austin, Texas, USA, 3 - 8 June 2012.. Piscataway, NJ: IEEE, 2012. - ISBN 978-1-467-30064-3, p. 000396-000405

Hofmann, T.; Yu, T.H.; Folse, M.; Weinhardt, L.; Bär, M.; Zhang, Y.; Merinov, B.V.; Myers, D.J.; Goddard, W.A.; Heske, C.: Using Photoelectron Spectroscopy and Quantum Mechanics to Determine d-Band Energies of Metals for Catalytic Applications. Journal of Physical Chemistry C 116 (2012), p. 24016-24026
doi:10.1021/jp303276z

Pookpanratana, S.; France, R.; Felix, R.; Wilks, R.; Weinhardt, L.; Hofmann, T.; Tati Bismaths, L.; Mulcahy, S.; Kronast, F.; Moustakas, T. D.; Bär, M.; Heske, C.: Microstructure of vanadium-based contacts on n-type GaN. Journal of Physics D: Applied Physics 45 (2012), p. 105401/1-6
doi:10.1088/0022-3727/45/10/105401

Schorr, S.; Mainz, R.; Moenig, H.; Lauermann, I.; Bär, M.: The complex material properties of chalcopyrite and kesterite thin-film solar cell absorbers tackled by synchrotron-based analytics. Progress in Photovoltaics 20 (2012), p. 557-567
doi:10.1002/pip.1256

Song, X.; Caballero, R.; Felix, R.; Gerlach, D.; Kaufmann, C. A.; Schock, H.-W.; Wilks, R.G.; Bär, M.: Na incorporation into Cu(ln,Ga)Se2thin-film solar cell absorbers deposited on polyimide: Impact on the chemical and electronic surface structure. Journal of Applied Physics 111 (2012), p. 034903/1-8
doi:10.1063/1.3679604

Weinhardt, L.; Benkert, A.; Meyer, F.; Blum, M.; Wilks, R.G.; Yang, W.; Bär, M.; Reinert, F.; Heske, C.: Nuclear dynamics and spectator effects in resonant inelastic soft x-ray scattering of gas-phase water molecules. Journal of Chemical Physics 136 (2012), p. 144311/1-6
doi:10.1063/1.3702644

Wilks, R.G.; Caballero, R.; Song, X.; Felix, R.; Benkert, A.; Gerlach, D.; Weinhardt, L.; Blum, M.; Yang, W.; Kaufmann, C.A.; Heske, C.; Schock, H.-W.; Bär, M.: X-ray Spectroscopic Analysis of the Growth of CBD-CdS Buffers on flexible Cu(In,Ga)Se-2 Thin-Film Solar Cell Structures. In: 38th IEEE Photovoltaic Specialists Conference (PVSC 2012) : Austin, Texas, USA, 3 - 8 June 2012. Piscataway, NJ: IEEE, 2012. - ISBN 978-1-467-30064-3, p. 1682-1687

Wilks, R.G.; Repins, I.; Contreras, M.A.; Felix, R.; Herrero-Albillos, J.; Tati-Bismaths, L.; Kronast, F.; Noufi, R.; Bär, M.: Intergrain variations of the chemical and electronic surface structure of polycrystalline Cu(In,Ga)Se2 thin-film solar cell absorbers. Applied Physics Letters 101 (2012), p. 103908/1-4
doi:10.1063/1.4751261

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

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

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

Bär, M.; Weinhardt, L.; Heske, C.: Soft X-ray and electron spectroscopy: a unique "tool chest" to characterize the chemical and electronic properties of surfaces and interfaces. In: Abou-Ras, D. [u.a.] [Eds.] : Advanced Characterization Techniques for Thin Film Solar Cells. Weinheim: Wiley-VCH-Verl., 2011. - ISBN 978-3-527-41003-3, p. 387-410

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. 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

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. 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, 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

Bär, M.; Barreau, N.; Couzinié-Devy, F.; Pookpanratana, S.; Klaer, J.; Blum, M.; Zhang, Y.; Yang, W.; Denlinger, J.D.; Schock, H.-W.; Weinhardt, L.; Kessler, J.; Heske C.: Nondestructive depth-resolved spectroscopic investigation of the heavily intermixed In2S3/Cu(In,Ga)Se2 interface. Applied Physics Letters 96 (2010), p. 184101/1-3
doi:10.1063/1.3425739

Bär, M.; Schubert, B.; Marsen, B.; Unold, T.; Wilks, R.G.; Schock, H.-W.; Pookpanratana, S.; Blum, M.; Krause, S.; Zhang, Y.; Heske, C.; Yang, W.; Weinhardt, L.: Cu2ZnSnS4 thin-film solar cell absorber composition revealed by energy-dispersive and soft x-ray emission spectroscopy. In: 35th IEEE Photovoltaic Specialists Conference (PVSC 2010) : Honolulu, Hawaii, USA, 20 - 25 June 2010. Piscataway, NJ: IEEE, 2010. - ISBN 978-1-424-45890-5, p. 646-649

Bär, M.; Weinhardt, L.; Marsen, B.; Cole, B.; Gaillard, N.; Miller, E.L.; Heske, C.: Mo incorporation in WO3 thin film photoanodes: Tailoring the electronic structure for photoelectrochemical hydrogen production. Applied Physics Letters 96 (2010), p. 032107/1-3
doi:10.1063/1.3291689

Bär, M.; Wimmer, M.; Wilks, R.G.; Roczen, M.; Gerlach, D.; Ruske, F.; Lips, K.; Rech, B.; Weinhardt, L.; Blum, M.; Pookpanratana, S.; Krause, S.; Zhang, Y.; Heske, C.; Yang, W.; Denlinger J.D.: Impact of solid-phase crystallization of amorphous silicon on the chemical structure of the buried Si/ZnO thin film solar cell interface. Applied Physics Letters 97 (2010), p. 072105/1-3

Gaillard, N.; Cole, B.; Kaneshiro, J.; Miller, E.L.; Marsen, B.; Weinhardt, L.; Bär, M.; Heske, C.; Ahn, K.-S.; Yan, Y.; Al-Jassim M.M.: Improved current collection in WO3:Mo/WO3 bilayer photoelectrodes. Journal of Materials Research 25 (2010), p. 45-51

Pookpanratana, S.; France, R.; Blum, M.; Bell, A.; Bär, M.; Weinhardt, L.; Zhang, Y.; Hofmann, T.; Fuchs, O.; Yang, W.; Denlinger, J.D., Mulcahy, S.; Moustakas, T.D.; Heske C.: Chemical structure of vanadium-based contact formation on n-AlN. Journal of Applied Physics 108 (2010), p. 024906/1-6

Pookpanratana, S.; Khan, F.; Zhang, Y.; Heske, C.; Weinhardt, L.; Bär, M.; Liu, X.; Paudel, N.; Compaan A.: Chemical structure of buried interfaces in CdTe thin film solar cells. In: 35th IEEE Photovoltaic Specialists Conference (PVSC 2010) : Honolulu, Hawaii, USA, 20 - 25 June 2010. Piscataway, NJ: IEEE, 2010. - ISBN 978-1-424-45890-5, p. 24-27

Pookpanratana, S.; Liu, X.; Paudel, N.R.; Weinhardt, L.; Bär, M.; Zhang, Y.; Ranasinghe, A.; Khan, F.; Blum, M.; Yang, W.; Compaan, A.D.; Heske C.: Effects of postdeposition treatments on surfaces of CdTe/CdS solar cells. Applied Physics Letters 97 (2010), p. 172109/1-3

Pookpanratana, S.; Repins, I.; Bär, M.; Weinhardt, L.; Zhang,Y.; Félix, R.; Blum, M.; Yang, W.; Heske C.: CdS/Cu(In,Ga)Se2 interface formation in high-efficiency thin film solar cells. Applied Physics Letters 97 (2010), p. 074101/1-3
doi:10.1063/1.3481405

Pookpanratana, S.; Repins, I; Bar, M; Weinhardt, L; Zhang, Y; Felix, R; Blum, M; Yang, W; Heske, C : CdS/Cu(In,Ga)Se-2 interface formation in high-efficiency thin film solar cells. APPLIED PHYSICS LETTERS 97 (2010), p. 74101

Tran, I.C.; Félix, R.; Bär, M.; Weinhardt, L.; Zhang, Y.; Heske C.: Oxidation of titanium-decorated single-walled carbon nanotubes and subsequent reduction by lithium. Journal of the American Chemical Society 132 (2010), p. 5789-5792

Weinhardt, L.; Bär, M.; Pookpanratana, S.; Morkel, M.; Niesen, T.P.; Karg, F.; Ramanathan, K.; Contreras, M.A.; Noufi, R.; Umbach, E.; Heske C.: Sulfur gradient-driven Se diffusion at the CdS/CuIn(S,Se)2 solar cell interface. Applied Physics Letters 96 (2010), p. 182102/1-3
doi:10.1063/1.3425666

Blum, M. ; Weinhardt, L. ; Fuchs, O. ; Bär, M. ; Zhang, Y. ; Weigand, M. ; Krause, S. ; Pookpanratana, S. ; Hofmann, T. ; Yang, W. ; Denlinger, J.D. ; Umbach, E. ; Heske, C.: Solid and liquid spectroscopic analysis (SALSA) -- a soft x-ray spectroscopy endstation with a novel flow-through liquid cell. Review of Scientific Instruments 80 (2009), p. 123102/1-6
doi:10.1063/1.3257926

Bär, M.; Repins, I.; Contreras, M.A.; Weinhardt, L.; Noufi, R.; Heske, C.: Chemical and electronic surface structure of 20%-efficient Cu(In,Ga)Se2 thin film solar cell absorbers. Applied Physics Letters 95 (2009), p. 052106/1-3
doi:10.1063/1.3194153

Fuchs, O. ; Weinhardt, L. ; Blum, M. ; Weigand, M. ; Umbach, E. ; Bär, M. ; Heske, C. ; Denlinger, J. ; Chuang, Y.-D. ; McKinney, W. ; Hussain, Z. ; Gullikson, E. ; Jones, M. ; Batson, P. ; Nelles, B. ; Follath, R.: High-resolution, high-transmission soft x-ray spectrometer for the study of biological samples. Review of Scientific Instruments 80 (2009), p. 063103/1-7

Heske, C.; Weinhardt, L.; Bär M.: X-Ray and Electron Spectroscopy Studies of Oxide Semiconductors for Photoelectrochemical Hydrogen Production. In: l Vayssieres, L. [Ed.] : On solar hydrogen & nanotechnology. Singapore: Wiley (Asia), 2009. - ISBN 978-0-470-82397-2, p. 143-161

Pookpanratana, S.; Repins, I.; Bär, M.; Félix, R.; Blum, M.; Weinhardt, L.; Yang, W.; Denlinger, J.D.; Contreras, M.A.; Heske, C.:Spectroscopic analysis of the chemical structure at the CdS/Cu(In,Ga)Se2 interface in high-efficiency solar cell devices. In: 34th IEEE Photovoltaic Specialists Conference (PVSC 2009) 7-12 June 2009, Philadelphia, PA, USA . , 2009. - ISBN 978-1-4244-2949-3, p. 1060-1063
doi:10.1109/PVSC.2009.5411203