Publications

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2018

B. A. Veith-Wolf, S. Schäfer, R. Brendel, and J. Schmidt

Reassessment of intrinsic lifetime limit in n-type crystalline silicon and implication on maximum solar cell efficiency Journal Article

Solar Energy Materials and Solar Cells 186 , 194-199, (2018), ISSN: 0927-0248.

Abstract | Links | BibTeX | Tags: Aluminum oxide, Auger recombination, charge carrier lifetime, Intrinsic lifetime, silicon, surface passivation

F. Haase, S. Schäfer, C. Klamt, F. Kiefer, J. Krügener, R. Brendel, and R. Peibst

Perimeter Recombination in 25%-Efficient IBC Solar Cells With Passivating POLO Contacts for Both Polarities Journal Article

IEEE Journal of Photovoltaics 8 (1), 23-29, (2018), ISSN: 2156-3381.

Abstract | Links | BibTeX | Tags: Area measurement, charge carrier lifetime, Charge carrier lifetime analysis, Current measurement, Density measurement, Lighting, passivating contacts, perimeter recombination, Photovoltaic cells, Radiative recombination

2017

C. Gemmel, J. Hensen, S. Kajari-Schröder, and R. Brendel

4.5 ms Effective Carrier Lifetime in Kerfless Epitaxial Silicon Wafers From the Porous Silicon Process Journal Article

IEEE Journal of Photovoltaics 7 (2), 430-436, (2017), ISSN: 2156-3381.

Abstract | Links | BibTeX | Tags: charge carrier lifetime, Epitaxial growth, Epitaxy, Gettering, minority carrier lifetime, porous silicon (PSI), silicon, Substrates, Surface treatment, Temperature measurement

2016

V. Steckenreiter, J. Hensen, A. Knorr, S. Kajari-Schröder, and R. Brendel

Reuse of substrate wafers for the porous silicon layer transfer Journal Article

IEEE Journal of Photovoltaics 6 (3), 783-790, (2016).

Abstract | Links | BibTeX | Tags: Carrier lifetime, charge carrier lifetime, Contamination, Epitaxial growth, epitaxial layer, Epitaxial layers, layer transfer, Photovoltaic systems, porous silicon (PSI) process, silicon, substrate reuse, Substrates

S. Schäfer, C. Gemmel, S. Kajari-Schröder, and R. Brendel

Light trapping and surface passivation of micron-scaled macroporous blind holes Journal Article

IEEE Journal of Photovoltaics 6 (2), 397-403, (2016).

Abstract | Links | BibTeX | Tags: Absorption, charge carrier lifetime, Current density, Etching, Optical losses, optical reflectivity, Optical variables measurement, silicon, Surface texture

2014

S. Herlufsen, K. Bothe, R. Brendel, and J. Schmidt

Dynamic Photoluminescence Lifetime Imaging for Injection-dependent Lifetime Measurements Journal Article

Energy Procedia 55 , 77-84, (2014), ISSN: 1876-6102, (Proceedings of the 4th International Conference on Crystalline Silicon Photovoltaics (SiliconPV 2014)).

Links | BibTeX | Tags: charge carrier lifetime, photoluminescence, silicon

B. Veith, T. Ohrdes, F. Werner, R. Brendel, P. P. Altermatt, N. -P. Harder, and J. Schmidt

Injection dependence of the effective lifetime of n-type Si passivated by Al2O3: an edge effect? Journal Article

Solar Energy Materials and Solar Cells 120 (Part A), 436-440, (2014).

Links | BibTeX | Tags: Aluminum oxide, charge carrier lifetime, modeling, silicon, surface passivation

A. L. Blum, J. S. Swirhun, R. A. Sinton, F. Yan, S. Herasimenka, T. Roth, K. Lauer, J. Haunschild, B. Lim, K. Bothe, Z. Hameiri, B. Seipel, R. Xiong, M. Dhamrin, and J. D. Murphy

Inter-laboratory study of eddy-current measurement of excess carrier recombination lifetime Journal Article

IEEE Journal of Photovoltaics 4 (1), 525-531, (2014).

Links | BibTeX | Tags: Atmospheric measurements, charge carrier lifetime, eddy currents, Electrical resistance measurement, Instruments, Laboratories, Particle measurements, photoconductivity, silicon, Standards, Transient analysis

2013

A. L. Blum, J. S. Swirhun, R. A. Sinton, F. Yan, S. Herasimenka, T. Roth, K. Lauer, J. Haunschild, B. Lim, K. Bothe, Z. Hameiri, B. Seipel, R. Xiong, M. Dhamrin, and J. D. Murphy

Inter-laboratory study of eddy-current measurement of excess-carrier recombination lifetime Inproceedings

IEEE (Ed.): 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC) , 1396-1401, Tampa, FL, USA, (2013), ISBN: 978-1-4799-3299-3.

Links | BibTeX | Tags: Atmospheric measurements, charge carrier lifetime, eddy currents, Electrical resistance measurement, Instruments, Laboratories, Particle measurements, photoconductivity, silicon, Standards, Transient analysis

T. Dullweber, C. Kranz, U. Baumann, R. Hesse, D. Walter, J. Schmidt, P. Altermatt, and R. Brendel

Silicon wafer material options for highly efficient p-type PERC solar cells Inproceedings

IEEE (Ed.): 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC) , 3074-3078, Tampa, FL, USA, (2013), ISBN: 978-1-4799-3299-3.

Links | BibTeX | Tags: charge carrier lifetime, Conductivity, Degradation, light-induced degradation, PERC, Photovoltaic cells, Semiconductor device modeling, silicon, silicon solar cells

J. Schmidt, B. Lim, D. Walter, K. Bothe, S. Gatz, T. Dullweber, and P. P. Altermatt

Impurity-related limitations of next-generation industrial silicon solar cells Journal Article

IEEE Journal of Photovoltaics 3 (1), 114-118, (2013).

Links | BibTeX | Tags: charge carrier lifetime, Curing, Impurities, Iron, Photovoltaic cells, Photovoltaic systems, Semiconductor device modeling, silicon

S. Herlufsen, D. Hinken, M. Offer, J. Schmidt, and K. Bothe

Validity of calibrated photoluminescence lifetime measurements of silicon wafers for arbitrary lifetime and injection ranges Journal Article

IEEE Journal of Photovoltaics 3 (1), 381-386, (2013).

Links | BibTeX | Tags: calibration, Carrier lifetime, Charge carrier density, charge carrier lifetime, crystalline silicon wafers, Density measurement, Imaging, photoconductance (PC), photoluminescence, photoluminescence (PL), Photonics, silicon

2012

J. Müller, K. Bothe, S. Herlufsen, H. Hannebauer, R. Ferre, and R. Brendel

Reverse saturation current density imaging of highly doped regions in silicon: A photoluminescence approach Journal Article

Solar Energy Materials and Solar Cells 106 , 76-79, (2012), (SiliconPV).

Links | BibTeX | Tags: charge carrier lifetime, diffusion, Photolumincescence, Reverse saturation current density

S. Herlufsen, K. Bothe, J. Schmidt, R. Brendel, and S. Siegmund

Dynamic photoluminescence lifetime imaging of multicrystalline silicon bricks Journal Article

Solar Energy Materials and Solar Cells 106 , 42-46, (2012), (SiliconPV).

Links | BibTeX | Tags: Bricks, charge carrier lifetime, photoluminescence, silicon

2009

M. A. Kessler, T. Ohrdes, B. Wolpensinger, R. Bock, and N. P. Harder

Characterisation and implications of the boron rich layer resulting from open-tube liquid source BBR3 boron diffusion processes Inproceedings

IEEE (Ed.): 2009 34th IEEE Photovoltaic Specialists Conference (PVSC), 001556-001561, Philadelphia, PA, USA, (2009), ISSN: 0160-8371.

Links | BibTeX | Tags: boron, charge carrier lifetime, Degradation, Diffusion processes, Furnaces, Glass, oxygen, Scanning electron microscopy, silicon, Temperature

2008

B. Lim, K. Bothe, and J. Schmidt

Modeling the generation and dissociation of the boron-oxygen complex in B-Doped Cz-Si Inproceedings

IEEE (Ed.): 2008 33rd IEEE Photovoltaic Specialists Conference, 1-4, San Diego, CA, USA, (2008), ISSN: 0160-8371.

Links | BibTeX | Tags: Annealing, charge carrier lifetime, Degradation, Lighting, Photovoltaic cells, Semiconductor device modeling, silicon, Solar power generation, Temperature, Voltage

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