@misc{HammerschmidtDoepkingBurgeretal.2017, author = {Hammerschmidt, Martin and D{\"o}pking, Sandra and Burger, Sven and Matera, Sebastian}, title = {Field Heterogeneities and their Impact on Photocatalysis: Combining optical and kinetic Monte Carlo Simulations on the Nanoscale}, issn = {1438-0064}, doi = {10.1021/acs.jpcc.9b11469}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-63690}, year = {2017}, abstract = {Gaining insights into the working principles of photocatalysts on an atomic scale is a challenging task. The obviously high complexity of the reaction mechanism involving photo-excited electrons and holes is one reason. Another complicating aspect is that the electromagnetic field, driving photocatalysis, is not homogeneous on a nanoscale level for particle based catalysts as it is influenced by the particle's shape and size. We present a simple model, inspired by the CO2 reduction on titania anatase, which addresses the impact of these heterogeneities on the photocatalytic kinetics by combining kinetic Monte Carlo with electromagnetic wave simulations. We find that average activity and especially efficiency might differ significantly between different particles. Moreover, we find sizable variation of the catalytic activity on a single facet of a nanocrystal. Besides this quantitative heterogeneity, the coverage situation in general changes laterally on this facet and we observe a concomitant change of the rate-determining steps. This heterogeneity on all levels of photocatalytic activity is masked in experimental studies, where only the spatially averaged activity can be addressed. Microkinetic models based on experimental findings might therefore not represent the true micro- scopic behavior, and mechanistic conclusion drawn from these need to be handled with care.}, language = {en} } @article{EisenhauerKoeppelJaegeretal.2017, author = {Eisenhauer, David and K{\"o}ppel, Grit and J{\"a}ger, Klaus and Chen, Duote and Shargaieva, Oleksandra and Sonntag, Paul and Armkreutz, Daniel and Rech, Bernd and Becker, Christiane}, title = {Smooth anti-reflective three-dimensional textures for liquid phase crystallized silicon thin-film solar cells on glass}, volume = {7}, journal = {Sci. Rep.}, arxiv = {http://arxiv.org/abs/1609.06997}, doi = {10.1038/s41598-017-02874-y}, pages = {2658}, year = {2017}, language = {en} } @inproceedings{JaegerKoeppelHammerschmidtetal.2017, author = {J{\"a}ger, Klaus and K{\"o}ppel, Grit and Hammerschmidt, Martin and Burger, Sven and Becker, Christiane}, title = {Accurate optical simulations of periodic nanostructures on a thick glass substrate}, booktitle = {29th Workshop on Quantum Solar Energy Conversion - (QUANTSOL)}, year = {2017}, language = {en} } @inproceedings{MangalgiriŠiškinsArslanovaetal.2017, author = {Mangalgiri, Gauri and Šiškins, Makars and Arslanova, Alina and Hammerschmidt, Martin and Manley, Phillip and Riedel, Wiebke and Schmid, Martina}, title = {Highly Transmittive Broadband Dielectric Nanoholes}, booktitle = {CLEO}, doi = {10.1364/CLEO_AT.2017.JTu5A.117}, pages = {JTu5A.117}, year = {2017}, language = {en} } @article{JaegerKoeppelEisenhaueretal.2017, author = {J{\"a}ger, Klaus and K{\"o}ppel, Grit and Eisenhauer, David and Chen, Duote and Hammerschmidt, Martin and Burger, Sven and Becker, Christiane}, title = {Optical simulations of advanced light management for liquid-phase crystallized silicon thin-film solar cells}, volume = {10356}, journal = {Proc. SPIE}, doi = {10.1117/12.2273994}, pages = {103560F}, year = {2017}, language = {en} } @article{BarthRoderBrodoceanuetal.2017, author = {Barth, Carlo and Roder, Sebastian and Brodoceanu, Daniel and Kraus, Tobias and Hammerschmidt, Martin and Burger, Sven and Becker, Christiane}, title = {Increased fluorescence of PbS quantum dots in photonic crystals by excitation enhancement}, volume = {111}, journal = {Appl. Phys. Lett.}, arxiv = {http://arxiv.org/abs/1708.06566}, doi = {10.1063/1.4995229}, pages = {031111}, year = {2017}, language = {en} } @inproceedings{AbebeGomardZschiedrichetal.2017, author = {Abebe, Muluneh G. and Gomard, Guillaume and Zschiedrich, Lin and Rockstuhl, Carsten and Paetzold, Ulrich W. and Abass, Aimi}, title = {Thermodynamics of Photon Recycling in Four Terminal Perovskite/si Tandem Solar Cells}, booktitle = {Optical Nanostructures and Advanced Materials for Photovoltaics}, doi = {10.1364/PV.2017.PM4A.2}, pages = {PM4A.2}, year = {2017}, language = {en} }