Design and Demonstration of Technology for Silicon Thin-Film Solar Cells with 14% Cell and 13% Module Efficiency

The intent of project Demo 14 was the development of groundbreaking concepts including new and innovative materials as well as device concepts in order to increase efficiencies of silicon thin-film solar cells. The project's objective was the production of solar cells with stable efficiencies over 14% as a basis for the development of cost efficient solar modules with stable cell efficiencies of more then 13% ready for production in industrial scales. The project has been headed by Masdar PV, a manufacturer of solar cells, and performed together with Forschungszentrum Jülich, PVcomB and ZIB. The demonstration of the process on 30 x 30 cm^2 solar modules with efficiencies greater than 13% was a milestone of the project. In addition, a specialized computer program was developed tailored to optimize the optical properties of thin-film solar cells based on the actual three dimensional geometric properties of the solar cell including all the randomly textured layers.

Publikationen

2016 2014 2013 2012

2016
Martin Hammerschmidt	Optical simulation of complex nanostructured solar cells with a reduced basis method	Doctoral thesis, Freie Universität Berlin, Frank Schmidt, Bernd Rech, Ralf Kornhuber (Advisors), 2016	BibTeX URN
2014
Christiane Becker, Philippe Wyss, David Eisenhauer, Jürgen Probst, Veit Preidel, Martin Hammerschmidt, Sven Burger	5 x 5 cm2 silicon photonic crystal slabs on glass and plastic foil exhibiting broadband absorption and high-intensity near-fields	Sci. Rep., Vol.4, p. 5886, 2014	BibTeX DOI
Daniel Lockau, Martin Hammerschmidt, Jan Haschke, Mark Blome, Florian Ruske, Frank Schmidt, Bernd Rech	A comparison of scattering and non-scattering anti-reflection designs for back contacted polycrystalline thin film silicon solar cells in superstrate configuration	Proc. SPIE, p. 914006, Vol.9140, Photonics for Solar Energy Systems, 2014	BibTeX DOI
Martin Hammerschmidt, Jan Pomplun, Sven Burger, Frank Schmidt	Adaptive sampling strategies for effcient parameter scans in nano-photonic device simulations	Proc. SPIE, p. 89801O, Vol.8980, 2014 (preprint available as )	BibTeX DOI
Daniel Lockau, Tobias Sontheimer, Veit Preidel, Florian Ruske, Martin Hammerschmidt, Christiane Becker, Frank Schmidt, Bernd Rech	Advanced microhole arrays for light trapping in thin film silicon solar cells	Solar Energy Materials and Solar Cells, Vol.125, pp. 298-304, 2014	BibTeX DOI
Simon Kirner, Martin Hammerschmidt, Christoph Schwanke, Daniel Lockau, Sonya Calnan, Tim Frijnts, Sebastian Neubert, Andreas Schöpke, Frank Schmidt, Jens-Hendrik Zollondz, Andreas Heidelberg, Bernd Stannowski, Bernd Rech, Rutger Schlatmann	Implications of TCO Topography on Intermediate Reflector Design for a-Si/μc-Si Tandem Solar Cells — Experiments and Rigorous Optical Simulations	IEEE Journal of Photovoltaics, 4(1), pp. 10-15, 2014	BibTeX DOI
Martin Hammerschmidt, Daniel Lockau, Lin Zschiedrich, Frank Schmidt	Optical modelling of incoherent substrate light-trapping in silicon thin film multi-junction solar cells with finite elements and domain decomposition	Proc. SPIE: Physics and Simulation of Optoelectronic Devices XXII, p. 898007, Vol.8980, 2014 (preprint available as )	BibTeX DOI
2013
Tobias Sontheimer, Veit Preidel, Daniel Lockau, Franziska Back, Eveline Rudigier-Voigt, Bernd Löchel, Alexei Erko, Frank Schmidt, Alexander Schnegg, Klaus Lips, Christiane Becker, Bernd Rech	Correlation between structural and opto-electronic characteristics of crystalline Si microhole arrays for photonic light management	Journal of Applied Physics, 114(17), p. 173513, 2013	BibTeX DOI
Martin Hammerschmidt, Daniel Lockau, Sven Burger, Frank Schmidt, Christophi Schwanke, Simon Kirner, Sonya Calnan, Bernd Stannowski, Bernd Rech	FEM-based optical modeling of silicon thin-film tandem solar cells with randomly textured interfaces in 3D	Proc. SPIE, Vol.8620, p. 86201H, 2013	BibTeX DOI
Phillip Manley, F. Schmidt, Martina Schmid	Light extraction from plasmonic particles with dielectric shells and overcoatings	Renewable Energy and the Environment, p. PW3B.7, 2013	BibTeX DOI
Daniel Lockau, Tobias Sontheimer, Christiane Becker, Eveline Rudigier-Voigt, Frank Schmidt, Bernd Rech	Nanophotonic light trapping in 3-dimensional thin-film silicon architectures	Opt. Express, Vol.21, p. A42, 2013	BibTeX DOI
Christiane Becker, Jolly Xavier, Veit Preidel, Philippe Wyss, Tobias Sontheimer, Bernd Rech, Jürgen Probst, Christoph Hülsen, Bernd Löchel, Alexei Erko, Sven Burger, Frank Schmidt, Franziska Back, Eveline Rudigier-Voigt	Nanophotonic light trapping in polycrystalline silicon thin-film solar cells using periodically nanoimprint-structured glass substrates	Proc. SPIE, p. 88240D, Vol.8824, 2013	BibTeX DOI
Daniel Lockau, Tobias Sontheimer, Veit Preidel, Christiane Becker, Florian Ruske, Frank Schmidt, Bernd Rech	Optical properties and Limits of a Large-Area Periodic Nanophotonic Light Trapping Design for Polycrystalline Silicon Thin Film Solar Cells	MRS Proceedings, Vol.1493, pp. 59-64, 2013	BibTeX DOI
2012
Martin Hammerschmidt, Daniel Lockau, Sven Burger, Frank Schmidt, Christoph Schwanke, Simon Kirner, Sonya Calnan, B. Stannowski, Bernd Rech	3D optical modeling of thin-film a-Si/mc-Si tandem solar cells with random textured interfaces using FEM	Renewable Energy and the Environment Optics and Photonics Congress, p. JM5A.15, 2012	BibTeX DOI