Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2018Charge carrier transport mechanisms of passivating contacts studied by temperature-dependent J-V measurements
Feldmann, Frank; Nogay, Gizem; Löper, Phillip; Young, David L.; Lee, Benjamin G.; Stradins, Paul; Hermle, Martin; Glunz, Stefan W.
Journal Article
2016Monolithic Si nanocrystal/crystalline Si tandem cells involving Si nanocrystals in SiC
Schnabel, M.; Canino, M.; Schillinger, K.; Löper, P.; Summonte, C.; Wilshaw, P.R.; Janz, S.
Journal Article
2016Silicon nanocrystals embedded in silicon carbide as a wide-band gap photovoltaic material
Lopez-Vidrier, J.; Löper, P.; Schnabel, M.; Hernandez, S.; Canino, M.; Summonte, C.; Janz, S.; Garrido, B.
Journal Article
2015Absorption and emission of silicon nanocrystals embedded in SiC: Eliminating Fabry-Pérot interference
Schnabel, M.; Summonte, C.; Dyakov, S.; Lopez-Conesa, L.; Löper, P.; Janz, S.; Wilshaw, P.R.; Canino, M.
Journal Article
2015Charge transport in nanocrystalline SiC with and without embedded Si nanocrystals
Schnabel, M.; Canino, M.; Kühnold-Pospischil, S.; Lopez-Vidrier, J.; Klugermann, T.; Weiss, C.; Lopez-Conesa, L.; Zschintzsch-Dias, M.; Summonte, C.; Löper, P.; Janz, S.; Wilshaw, P.R.
Journal Article
2015Prototype PV cells with Si nanoclusters
Janz, S.; Löper, P.; Schnabel, M.
Book Article
2015Self-assembled silicon nanocrystal arrays for photovoltaics
Schnabel, M.; Weiss, C.; Löper, P.; Wilshaw, P.R.; Janz, S.
Journal Article
2015Structural and optical properties of silicon nanocrystals embedded in silicon carbide
Weiss, C.; Schnabel, M.; Reichert, A.; Löper, P.; Janz, S.
Journal Article
2015Structural parameters effect on the electrical and electroluminescence properties of silicon nanocrystals/SiO2 superlattices
Lopez-Vidrier, J.; Berencen, Y.; Hernandez, S.; Mundet, B.; Gutsch, S.; Laube, J.; Hiller, D.; Löper, P.; Schnabel, M.; Janz, S.; Zacharias, M.; Garrido, B.
Journal Article
2014Boron diffusion in nanocrystalline 3C-SiC
Schnabel, M.; Weiss, C.; Canino, M.; Rachow, T.; Löper, P.; Summonte, C.; Mirabella, S.; Janz, S.; Wilshaw, P.R.
Journal Article
2014Electrical and electroluminescence properties of silicon nanocystals/SiO2 superlattices
López-Vidrier, J.; Berencén, Y.; Mundet, B.; Hernández, S.; Gutsch, S.; Hiller, D.; Löper, P.; Schnabel, M.; Janz, S.; Zacharias, M.; Garrido, B.
Conference Paper
2014Electrical and optical characterisation of silicon nancrystals embedded in SiC
Schnabel, M.; Löper, P.; Canino, M.; Dyakov, S.A.; Allegrezza, M.; Bellettato, M.; Lopez-Vidrier, J.; Hernandez, S.; Summonte, C.; Garrido, B.; Wilshaw, P.R.; Janz, S.
Conference Paper
2014Erratum: "Influence of boron doping and hydrogen passivation on recombination of photoexcited charge carriers in silicon nanocrystal/SiC multilayers" [J. Appl. Phys. 114, 073101 (2013)]
Korinek, M.; Schnabel, M.; Canino, M.; Kozak, M.; Trojanek, F.; Salava, J.; Löper, P.; Janz, S.; Summonte, C.; Maly, P.
Journal Article
2014High-bandgap silicon nanocrystal solar cells: Device fabrication, characterization, and modeling
Löper, P.; Canino, M.; Schnabel, M.; Summonte, C.; Janz, S.; Zacharias, M.
Book Article
2014A low thermal impact annealing process for SiO2-embedded Si nanocrystals with optimized interface quality
Hiller, D.; Gutsch, S.; Hartel, A.M.; Löper, P.; Gebel, T.; Zacharias, M.
Journal Article
2014Nanocrystalline SiC formed by annealing of a-SiC:H on Si substrates: A study of dopant interdiffusion
Schnabel, M.; Weiss, C.; Löper, P.; Canino, M.; Summonte, C.; Wilshaw, P.R.; Janz, S.
Journal Article
2014Publisher's note: Boron diffusion in nanocrystalline 3C-SiC [Appl. Phys. Lett. 104, 213108 (2014)]
Schnabel, M.; Weiss, C.; Canino, M.; Rachow, T.; Löper, P.; Summonte, C.; Mirabella, S.; Janz, S.; Wilshaw, P.R.
Journal Article
2014Silicon nanocrystals in carbide matrix
Summonte, C.; Allegrezza, M.; Bellettato, M.; Liscio, F.; Canino, M.; Desalvo, A.; Lopez-Vidrier, J.; Hernandez, S.; Lopez-Conesa, L.; Estrade, S.; Peiro, F.; Garrido, B.; Löper, P.; Schnabel, M.; Janz, S.; Guerra, R.; Ossicini, S.
Journal Article
2014Silicon nanostructures for photovoltaics
Löper, P.
Dissertation
2013Charge transport and electroluminescence of silicon nanocrystals/SiO2 superlattices
Lopez-Vidrier, J.; Berencén, Y.; Hernández, S.; Blázquez, O.; Gutsch, S.; Laube, J.; Hiller, D.; Löper, P.; Schnabel, M.; Janz, S.; Zacharias, M.; Garrido, B.
Journal Article
2013Identification and tackling of a parasitic surface compound in SiC and Si-rich carbide films
Canino, M.; Summonte, C.; Allegrezza, M.; Shukla, R.; Jain, I.P.; Bellettato, M.; Desalvo, A.; Mancarella, F.; Sanmartin, M.; Terrasi, A.; Löper, P.; Schnabel, M.; Janz, S.
Journal Article
2013Influence of boron doping and hydrogen passivation on recombination of photoexcited charge carriers in silicon nanocrystal/SiC multilayers
Korinek, M.; Schnabel, M.; Canino, M.; Kozak, M.; Trojanek, F.; Salava, J.; Löper, P.; Janz, S.; Summonte, C.; Maly, P.
Journal Article
2013Novel silicon nanocrystal materials for photovoltaic applications
Weiss, C.; Janz, S.; Rumpel, M.; Schnabel, M.; Löper, P.
Conference Paper
2013Optoelectronic Characterization of SiC with Embedded Si Nanocrystals as Solar Cell Absorber Material
Löper, P.; Valenta J.; Canino M.; Glunz S.; Janz S.; Zacharias M.
Conference Paper
2013Processing and characterisation of tandem solar cells from crystalline silicon materials
Janz, S.; Schnabel, M.; Löper, P.; Summonte, C.; Canino, M.; Lopez-Vidrier, J.; Hernandez, S.; Garrido, B.; Glunz, S.W.
Conference Paper
2013Silicon nanocrystals embedded in silicon carbide: Investigation of charge carrier transport and recombination
Löper, P.; Canino, M.; Qazzazie, D.; Schnabel, M.; Allegrezza, M.; Summonte, C.; Glunz, S.W.; Janz, S.; Zacharias, M.
Journal Article
2013Silicon nanocrystals from high-temperature annealing: Characterization on device level
Löper, P.; Canino, M.; Lopez-Vidrier, J.; Schnabel, M.; Schindler, F.; Heinz, F.; Witzky, A.; Bellettato, M.; Allegrezza, M.; Hiller, D.; Hartel, A.; Gutsch, S.; Hernandez, S.; Guerra, R.; Ossicini, S.; Garrido, B.; Janz, S.; Zacharias, M.
Journal Article
2013Silicon nanocrystals produced by solid phase crystallisation of superlattices for photovoltaic applications
Janz, S.; Löper, P.; Schnabel, M.
Journal Article
2013Structural and optical properties of size controlled Si nanocrystals in Si3N4 matrix
Zelenina, A.; Dyakov, S.A.; Hiller, D.; Gutsch, S.; Trouillet, V.; Bruns, M.; Mirabella, S.; Löper, P.; López-Conesa, L.; López-Vidrier, J.; Estrade, S.; Peiro, F.; Garrido, B.; Bläsing, J.; Krost, A.; Zhigunov, D.M.; Zacharias, M.
Journal Article
2013Structural, optical and electrical properties of silicon nanocrystals embedded in SixC1-x/SiC multilayer systems for photovoltaic applications
López-Vidrier, J.; Hernández, S.; Samà, J.; Canino, M.; Allegrezza, M.; Bellettato, M.; Shukla, R.; Schnabel, M.; Löper, P.; López-Conesa, L.; Estradé, S.; Peiró, F.; Janz, S.; Garrido, B.
Journal Article
2013Thermal oxidation and encapsulation of silicon-carbon nanolayers
Schnabel, M.; Löper, P.; Gutsch, S.; Wilshaw, P.R.; Janz, S.
Journal Article
2012Analysis of the temperature dependence of the open-circuit voltage
Löper, P.; Pysch, D.; Richter, A.; Hermle, M.; Janz, S.; Zacharias, M.; Glunz, S.W.
Journal Article, Conference Paper
2012A membrane device for substrate-free photovoltaic characterization of quantum dot based p-i-n solar cells
Löper, P.; Stüwe, D.; Künle, M.; Bivour, M.; Reichel, C.; Neubauer, R.; Schnabel, M.; Hermle, M.; Eibl, O.; Janz, S.; Zacharias, M.; Glunz, S.W.
Journal Article
2012Modeling upconversion of erbium doped microcrystals based on experimentally determined Einstein coefficients
Fischer, S.; Steinkemper, H.; Löper, P.; Hermle, M.; Goldschmidt, J.C.
Journal Article
2012Photovoltaic properties of silicon nanocrystals in silicon carbide
Löper, P.; Witzky, A.; Hartel, A.; Gutsch, S.; Hiller, D.; Goldschmidt, J.C.; Janz, S.; Glunz, S.W.; Zacharias, M.
Conference Paper
2012Silicon quantum dots in photovoltaic devices: Device fabrication, characterization and comparison of materials
Löper, P.; Canino, M.; Lopez-Vidrier, J.; Schnabel, M.; Witzky, A.; Belletato, M.; Allegrezza, M.; Hiller, D.; Hartel, A.; Gutsch, S.; Hernandez, S.; Guerra, R.; Ossicini, S.; Garrido, B.; Janz, S.; Zacharias, M.
Conference Paper
2011Calculation of the Quasi Fermi-Level Splitting in an Ideal Superlattice of Silicon Nanocrystals
Müller, R.; Löper, P.; Hiller, D.; Gutsch, S.; Keding, R.; Reichel, C.; Bivour, M.; Hermle, M.; Janz, S.; Goldschmidt, J.C.; Zacharias, M.; Glunz, S.W.
Conference Paper
2011Electrical Properties of Recrystallised SiC Films from PECVD Precursors for Silicon Quantum Dot Solar Cell Applications
Schnabel, M.; Witzky, A.; Löper, P.; Gradmann, R.; Künle, M.; Janz, S.
Conference Paper
2011Experimental analysis of upconversion with both coherent monochromatic irradiation and broad spectrum illumination
Goldschmidt, J.C.; Fischer, S.; Löper, P.; Krämer, K.W.; Biner, D.; Hermle, M.; Glunz, S.W.
Journal Article
2011Formation of size-controlled silicon nanocrystals in plasma enhanced chemical vapor deposition grown SiOxNy/SiO2 superlattices
Hartel, A.M.; Hiller, D.; Gutsch, S.; Löper, P.; Estrade, S.; Peiro, F.; Garrido, B.; Zacharias, M.
Journal Article
2011The NASCEnT Project
Janz, S.; Löper, P.; Schnabel, M.; Zacharias, M.; Hiller, D.; Gutsch, S.; Hartel, A.M.; Summonte, C.; Canino, M.; Allegrezza, M.; Ossicini, S.; Guerra, R.; Marri, I.; Garrido, B.; Hernandez, S.; Lopez-Vidrier, J.; Valenta, J.; Kubera, T.; Foti, M.
Conference Paper
2011Optoelectronic Properties of Silicon Quantum Dots
Löper, P.; Hiller, D.; Janz, S.; Hermle, M.; Glunz, S.W.; Zacharias, M.
Conference Paper
2011Photovoltaic module used in photovoltaic concentrator system, has optic element that is arranged in sunlight irradiating direction, comprising frequency changing material to change frequency of incident sunlight
Peters, M.; Peharz, G.; Goldschmidt, J.C.; Löper, P.
Patent
2011Quasi-fermi-level splitting in ideal silicon nanocrystal superlattices
Löper, P.; Müller, R.; Hiller, D.; Barthel, T.; Malguth, E.; Janz, S.; Goldschmidt, J.C.; Hermle, M.; Zacharias, M.
Journal Article
2011Si and SiC nanocrystals in an amorphous SiC matrix
Gradmann, R.; Loeper, P.; Künle, M.; Rothfelder, M.; Janz, S.; Hermle, M.; Glunz, S.
Journal Article
2011Structural and optical characterization of size controlled silicon nanocrystals in SiO2/SiOxNy multilayers
Lopez-Vidrier, J.; Hernandez, S.; Hartel, A.M.; Hiller, D.; Gutsch, S.; Löper, P.; Lopez-Conesa, L.; Estrade, S.; Peiro, F.; Zacharias, M.; Garrido, B.
Journal Article, Conference Paper
2011Verfahren zur Herstellung eines Halbleiterbauelements und Halbleiterbauelement
Löper, Philipp; Müller, Ralph; Janz, S.; Hermle, M.; Glunz, S.; Goldschmidt, j.-C.
Patent
2010Amorphous SixC1-x:H single layers before and after thermal annealing: Correlating optical and structural properties
Hartel, A.M.; Künle, M.; Löper, P.; Janz, S.; Bett, A.W.
Journal Article
2010Calculation of up-conversion photoluminescence in Er3+ ions near noble-metal nanoparticles
Hallermann, F.; Goldschmidt, J.C.; Fischer, S.; Löper, P.; Plessen, G. von
Conference Paper
2010Carrier confinement and transport in high band gap materials with embedded Si quantum dots
Löper, P.; Hiller, D.; Künle, M.; Gradmann, R.; Rothfelder, M.; Janz, S.; Hermle, M.; Zacharias, M.; Glunz, S.W.
Conference Paper
2010Enhancement of silicon solar cell efficiency by upconversion
Fischer, S.; Goldschmidt, J.C.; Löper, P.; Bauer, G.H.; Brüggemann, R.; Krämer, K.; Biner, D.; Hermle, M.; Glunz, S.W.
Journal Article
2010Low temperature silicon dioxide by thermal atomic layer deposition: Investigation of material properties
Hiller, D.; Zierold, R.; Bachmann, J.; Alexe, M.; Yang, Y.; Gerlach, J.W.; Stesmans, A.; Jivanescu, M.; Müller, U.; Vogt, J.; Hilmer, H.; Löper, P.; Künle, M.; Munnik, F.; Nielsch, K.; Zacharias, M.
Journal Article
2010Photonic concepts for solar cells
Peters, M.; Bielawny, A.; Bläsi, B.; Carius, R.; Glunz, S.W.; Goldschmidt, J.C.; Hauser, H.; Hermle, M.; Kirchartz, T.; Löper, P.; Üpping, J.; Wehrspohn, R.; Willeke, G.
Book Article
2010Si-rich a-SiC:H thin films: Structural and optical transformations during thermal annealing
Künle, M.; Kaltenbach, T.; Löper, P.; Hartel, A.; Janz, S.; Eibl, O.; Nickel, K.G.
Journal Article
2010Silicon nanocrystals in SiC: The influence of doping on crystallisation and electrical properties
Gradmann, R.; Löper, P.; Künle, M.; Rothfelder, M.; Janz, S.; Hermle, M.; Glunz, S.W.
Conference Paper
2010Spectrally-selective photonic structures for PV applications. Review
Peters, M.; Goldschmidt, J.C.; Löper, P.; Groß, B.; Üpping, J.; Dimroth, F.; Wehrspohn, R.B.; Bläsi, B.
Journal Article
2010Structural and optical characterization of Si quantumdots in a SiC matrix
Kuenle, M.; Löper, P.; Rothfelder, M.; Janz, S.; Nickel, K.-G.; Eibl, O.
Conference Paper
2010Upconversion to enhance silicon solar cell efficiency - detailed experimental analysis with both coherent monochromatic irradiation and white light illumination
Goldschmidt, J.C.; Fischer, S.; Löper, P.; Krämer, K.W.; Biner, D.; Hermle, M.; Glunz, S.W.
Conference Paper
2009The effect of photonic structures on the light guiding efficiency of fluorescent concentrators
Peters, M.; Goldschmidt, J.C.; Löper, P.; Bläsi, B.; Gombert, A.
Journal Article
2009Lumineszenzkollektor mit mindestens einer photonischen Struktur mit mindestens einem lumineszenten Material sowie diesen enthaltendes Solarzellenmodul
Goldschmidt, J.; Peters, M.; Hermle, M.; Löper, P.; Bläsi, B.
Patent
2009Nanostructure and phase formation in annealed a-Si1-xCx:H thin films for advanced silicon solar cells
Künle, M.; Hartel, A.; Löper, P.; Janz, S.; Eibl, O.
Conference Paper
2009Photon management with luminescent materials
Goldschmidt, J.C.; Fischer, S.; Löper, P.; Peters, M.; Steidl, L.; Hermle, M.; Glunz, S.W.
Conference Paper
2009Preparation of Si-quantumdots in SiC: single layer vs multi layer approach
Künle, M.; Hartel, A.; Löper, P.; Janz, S.; Eibl, O.
Conference Paper
2009Silicon quantum dot absorber layers for all-silicon tandem solar cells: Optical and electrical characterisation
Löper, P.; Hartel, A.; Künle, M.; Hiller, D.; Janz, S.; Hermle, M.; Zacharias, M.; Glunz, S.W.
Conference Paper
2009Silicon quantum dot superstructures for all-silicon tandem solar cells
Löper, P.; Hartel, A.; Künle, M.; Goldschmidt, J.C.; Peters, M.; Janz, S.; Hermle, M.; Glunz, S.W.; Zacharias, M.
Conference Paper
2008Advanced upconverter systems with spectral and geometric concentration for high upconversion efficiencies
Goldschmidt, J.C.; Löper, P.; Fischer, S.; Janz, S.; Peters, M.; Glunz, S.W.; Willeke, G.; Lifshitz, E.; Krämer, K.; Biner, D.
Conference Paper
2008Design of photonic structures for the enhancement of the light guiding efficiency of fluorescent concentrators
Peters, M.; Goldschmidt, J.C.; Löper, P.; Prönneke, L.; Bläsi, B.; Gombert, A.
Conference Paper
2008Directional selectivity and light-trapping in solar cells
Ulbrich, C.; Fahr, S.; Peters, M.; Üpping, J.; Kirchartz, T.; Rockstuhl, C.; Goldschmidt, J.C.; Löper, P.; Wehrspohn, R.; Gombert, A.; Lederer, F.; Rau, U.
Conference Paper
2008Light trapping, a new approach to spectrum splitting
Goetzberger, A; Goldschmidt, J.C.; Peters, M.; Löper, P.
Journal Article
2008Material characterization for advanced upconverter systems
Fischer, S.; Goldschmidt, J.C.; Löper, P.; Janz, S.; Peters, M.; Glunz, S.W.; Kigel, A.; Lifshitz, E.; Krämer, K.; Biner, D.; Bauer, G.H.; Brüggemann, R.
Conference Paper
2008Neodymium-doped fluorochlorozirconate glasses as an upconversion model system for high efficiency solar cells
Ahrens, B.; Löper, P.; Goldschmidt, J.C.; Glunz, S.; Henke, B.; Miclea, P.T.; Schweizer, S.
Journal Article
2008Progress in photon management for full spectrum utilization with luminescent materials
Goldschmidt, J.C.; Peters, M.; Löper, P.; Schultz, O.; Dimroth, F.; Bett, A.; Gombert, A.; Glunz, S.W.; Willeke, G.
Conference Paper
2008Upconversion for silicon solar cells: Material and system characterisation
Löper, P.; Goldschmidt, J.C.; Fischer, S.; Peters, M.; Meijerink, A.; Biner, D.; Krämer, K.; Schultz-Wittmann, O.; Glunz, S.W.; Luther, J.
Conference Paper
2007Advanced fluorescent concentrator system design
Goldschmidt, J.C.; Peters, M.; Löper, P.; Schultz, O.; Dimroth, F.; Glunz, S.W.; Gombert, A.; Willeke, G.
Conference Paper
2007Application of photonic structures on fluorescent concentrators
Peters, M.; Goldschmidt, J.; Löper, P.; Gombert, A.; Willeke, G.
Conference Paper
2007Efficient upconversion systems for silicon solar cells
Löper, P.; Goldschmidt, J.C.; Peters, M.; Biner, D.; Krämer, K.; Schultz, O.; Glunz, S.W.; Luther, J.
Conference Paper
2007Photon management for full spectrum utilization with fluorescent materials
Goldschmidt, J.C.; Peters, M.; Löper, P.; Glunz, S.W.; Gombert, A.; Willeke, G.
Conference Paper
2007Photovoltaik-Vorrichtung und deren Verwendung
Goetzberger, A.; Goldschmidt, J.; Löper, P.; Peters, M.
Patent
2007Solarelement mit gesteigerter Effizienz und Verfahren zur Effizienzsteigerung
Goldschmidt, J.; Loeper, P.; Peters, M.
Patent