@misc{SmirnovLambertzMolletal., author = {Smirnov, V. and Lambertz, Andreas and Moll, S. and B{\"a}r, Marcus and Starr, David E. and Wilks, Regan G. and Gorgoi, Mihaela and Heidt, A. and Luysberg, Martina and Holl{\"a}nder, B. and Finger, F.}, title = {Doped microcrystalline silicon oxide alloys for silicon-based photovoltaics: Optoelectronic properties, chemical composition, and structure studied by advanced characterization techniques}, series = {Physica Status Solidi: A - Applications and Materials Science}, volume = {213}, journal = {Physica Status Solidi: A - Applications and Materials Science}, number = {7}, issn = {1862-6319}, doi = {10.1002/pssa.201533022}, pages = {1814 -- 1820}, language = {en} } @inproceedings{LipsSchulzeStarretal., author = {Lips, Klaus and Schulze, Tim F. and Starr, David E. and B{\"a}r, Marcus and Wilks, Regan G. and Fenske, F. and Ruske, Florian and Reiche, Martin and Krol, Roel van de and Reichardt, Gerd and Sch{\"a}fers, Franz and Hendel, Stefan and Follath, Rolf and Bahrdt, Johannes and Peredkov, Sergey and DeBeer, Serena and H{\"a}vecker, Michael and Knop-Gericke, Axel and Rau, Bj{\"o}rn and Kaufmann, Christian and Schlatmann, Rutger and Schl{\"o}gl, Robert and Rech, Bernd and Raoux, Simone}, title = {EMIL: The Energy Materials In-situ Laboratory Berlin - A novel characterization facility for photovoltaic and energy materials}, series = {31st European Photovoltaic Solar Energy Conference and Exhibition, proceedings of the international conference held in Hamburg, Germany, 14 -18 September 2015}, booktitle = {31st European Photovoltaic Solar Energy Conference and Exhibition, proceedings of the international conference held in Hamburg, Germany, 14 -18 September 2015}, publisher = {WIP}, address = {M{\"u}nchen}, isbn = {3-936338-39-6}, doi = {10.4229/EUPVSEC20152015-1AO.2.1}, pages = {25 -- 28}, language = {en} } @inproceedings{LipsStarrBaeretal., author = {Lips, Klaus and Starr, David E. and B{\"a}r, Marcus and Schulze, Tim F. and Fenske, F. and Christiansen, Silke and Krol, Roel van de and Raoux, Simone and Reichardt, Gerd and Sch{\"a}fers, Franz and Hendel, Stefan and Follath, Rolf and Bahrdt, Johannes and Scheer, M. and W{\"u}stefeld, Godehard and Kuske, P. and H{\"a}vecker, Michael and Knop-Gericke, Axel and Schl{\"o}gl, Robert and Rech, Bernd}, title = {EMIL: The Energy Materials In Situ Laboratory Berlin}, series = {40th Photovoltaic Specialists Conference (PVSC), 2014 : Colorado Convention Center, Denver, Colorado, 8-13 June 2014}, booktitle = {40th Photovoltaic Specialists Conference (PVSC), 2014 : Colorado Convention Center, Denver, Colorado, 8-13 June 2014}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4799-4398-2}, doi = {10.1109/PVSC.2014.6925017}, pages = {698 -- 700}, language = {en} } @misc{MeyerWeinhardtBlumetal., author = {Meyer, Frank and Weinhardt, Lothar and Blum, Mia and B{\"a}r, Marcus and Wilks, Regan G. and Yang, Wooyong and Heske, Clemens and Reinert, F.}, title = {Non-equivalent carbon atoms in the resonant inelastic soft X-ray scattering map of cysteine}, series = {The journal of chemical physics}, volume = {138}, journal = {The journal of chemical physics}, number = {3}, issn = {1089-7690}, pages = {034306}, abstract = {Resonant inelastic soft x-ray scattering (RIXS) was used to study the electronic structure of solid cysteine films. A RIXS map approach, i.e., plotting the x-ray emission intensity as a function of excitation and emission energy, allows us to separate the contributions of the three chemically nonequivalent carbon atoms in cysteine. In particular, we can identify orbitals localized near the photoexcited atoms, as well as orbitals that are delocalized over the entire molecule.}, language = {en} } @misc{BaerTheisenWilksetal., author = {B{\"a}r, Marcus and Theisen, J.-P. and Wilks, Regan G. and Erfurth, F. and Duarte, Roberto Felix and Gerlach, Dominic and Haas, S. and Tati-Bismaths, L. and Reinert, F. and Kronast, F. and Niesen, T. P. and Palm, J. and Visbeck, S. and Weinhardt, Lothar}, title = {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}, series = {Journal of Applied Physics}, volume = {113}, journal = {Journal of Applied Physics}, number = {19}, issn = {1520-8850}, doi = {10.1063/1.4804413}, pages = {193709}, abstract = {Spatial variations in the chemical composition of the (Zn,Mg)O/CuIn(S,Se)2 thin-film solar cell interface were studied by photoemission electron microscopy (PEEM). Energy filtered PEEM images indicate significant differences in the magnesium and zinc distribution. Local photoemission measurements reveal a relative difference in the derived Mg/(ZnþMg) composition of the (Zn,Mg)O material of up to (11.460.7)\%, which can be expected to induce band gap fluctuations of (60630) meV. Furthermore, local areas with significant accumulations of sodium could be observed.}, language = {en} } @misc{WilksRepinsContrerasetal., author = {Wilks, Regan G. and Repins, Ingrid and Contreras, M. A. and Duarte, Roberto Felix and Herrero-Albillos, J. and Tati-Bismaths, L. and Kronast, F. and Noufi, R. and B{\"a}r, Marcus}, title = {Intergrain variations of the chemical and electronic surface structure of polycrystalline Cu(In,Ga)Se2 thin-film solar cell absorbers}, series = {Applied Physics Letters}, volume = {101}, journal = {Applied Physics Letters}, number = {10}, issn = {0003-6951}, pages = {103908-1 -- 103908-4}, abstract = {The μm-scale spatial distribution of the elements of polycrystalline Cu(In1- x Ga x )Se2 absorber surfaces is examined using x-ray photoelectron emission microscopy. The chemical composition varies from grain to grain, and a direct, linear anticorrelation between the In 3d and Ga 2p photoemission line intensities is observed. The line intensities are interpreted in terms of a varying value of x= Ga/(In+ Ga); the band gaps calculated from the inferred compositions of the grains are shown to be normally distributed with a standard deviation of 40 meV.}, language = {en} } @article{BaerMuellerRost, author = {B{\"a}r, F. and M{\"u}ller, S. and Rost, M.}, title = {Effiziente Braunkohleverstromung in einer Druckwirbelschichtfeuerung mit Teilvergasung}, language = {de} }