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Browsing by Subject "Carrier lifetime"

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Effective passivation of crystalline silicon surfaces by ultrathin atomic-layer-deposited TiOx layers

Titova, V.; Veith-Wolf, B.; Startsev, D.; Schmidt, J. (London : Elsevier Ltd., 2017)

We characterize the surface passivation properties of ultrathin titanium oxide (TiOx) films deposited by atomic layer deposition (ALD) on crystalline silicon by means of carrier lifetime measurements. We compare different ...
High-quality exfoliated crystalline silicon foils for solar cell applications

Niepelt, Raphael; Hensen, Jan; Knorr, Alwina; Steckenreiter, Verena; Kajari-Schröder, Sarah; Brendel, Rolf (Amsterdam : Elsevier, 2014)

Kerfless wafering techniques offer a significant cost saving potential via the reduction of silicon consumption. In this paper, we examine thin single crystalline Si foils that were fabricated by a novel kerfless ...
Implementation of full-area-deposited electron-selective TiOx layers into silicon solar cells

Titova, Valeriya; Schmidt, Jan (College Park, MD : American Institute of Physics, 2018)

We examine two different silicon solar cell designs featuring full-area electron-selective contacts based on ultrathin (2-3 nm) titanium oxide (TiOx) films deposited by atomic layer deposition. The first cell design applies ...
Kinetics of the permanent deactivation of the boron-oxygen complex in crystalline silicon as a function of illumination intensity

Steckenreiter, Verena; Walter, Dominic C.; Schmidt, Jan (Melville, NY : American Institute of Physics Inc., 2017)

Based on contactless carrier lifetime measurements performed on p-type boron-doped Czochralski-grown silicon (Cz-Si) wafers, we examine the rate constant Rde of the permanent deactivation process of the boron-oxygen-related ...
Lifetime Analysis for Defect Characterization in Kerfless Epitaxial Silicon from the Porous Silicon Process

Gemmel, Catherin; Hensen, Jan; Kajari-Schröder, Sarah; Brendel, Rolf (London : Elsevier Ltd., 2016)

Kerfless epitaxial silicon from the porous silicon (PSI) process is a promising alternative for standard wafers. They allow the reduction of PV costs by combining high material quality at reduced production costs. We ...
Organic-silicon Solar Cells Exceeding 20% Efficiency

Zielke, Dimitri; Niehaves, Claudia; Lövenich, Wilfried; Elschner, Andreas; Hörteis, Matthias; Schmidt, Jan (Amsterdam : Elsevier, 2015)

Aftera briefreview of therecent evolvement oforganic-silicon heterojunction solar cells,we present here our latest measurements of the saturation current densities (J0) and contact resistances (RC) of crystalline silicon ...
Recombination at local aluminum-alloyed silicon solar cell base contacts by dynamic infrared lifetime mapping

Müller, Jens; Bothe, Karsten; Gatz, Sebastian; Plagwitz, Heiko; Schubert, Gunnar; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)

The application of local aluminum (Al)-alloyed contacts to the p-type base of silicon solar cells reduces minority charge carrier recombination due to the formation of a local back surface field (LBSF). We study the ...
The effect of oxide precipitates on minority carrier lifetime in n-type silicon

Murphy, J.D.; Al-Amin, M.; Bothe, K.; Olmo, M.; Voronkov, V.V.; Falster, R.J. (College Park, MD : American Institute of Physics, 2015)

Supersaturated levels of interstitial oxygen in Czochralski silicon can lead to the formation of oxide precipitates. Although beneficial from an internal gettering perspective, oxygen-related extended defects give rise to ...
Two-stage permanent deactivation of the boron-oxygen-related recombination center in crystalline silicon

Steckenreiter, V.; Walter, D.C.; Schmidt, J. (London : Elsevier Ltd., 2017)

We analyze the lifetime evolution during permanent deactivation of the boron-oxygen-related defect center (BO defect) in boron-doped, oxygen-rich Czochralski-grown silicon (Cz-Si). In particular, we examine the impact of ...
Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study

Sieland, Fabian; Schneider, Jenny; Lippmann, Thorsten; Bahnemann, Detlef W. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)

In the focus of this study, mixtures of commercially available TiO2 powders were created and their photocatalytic activity concerning the acetaldehyde degradation in the gas phase was tested. Further, the lifetime of the ...
Understanding the Light-induced Lifetime Degradation and Regeneration in Multicrystalline Silicon

Bredemeier, Dennis; Walter, Dominic; Herlufsen, Sandra; Schmidt, Jan (London : Elsevier Ltd., 2016)

In this contribution, we focus on improving the fundamental understanding of the carrier lifetime degradation and regeneration observed in block-cast multicrystalline silicon (mc-Si) wafers under illumination at elevated ...

Now showing items 1-11 of 11

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