Prof. Christiane Becker Profile

Prof. Christiane Becker

at Helmholtz-Zentrum Berlin

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 30 May 2022 Presentation

Improving perovskite/silicon tandem solar cells with optical simulations

Klaus Jaeger, Johannes Sutter, Philipp Tockhorn, Martin Hammerschmidt, Philipp-Immanuel Schneider, Steve Albrecht, Christiane Becker

Proceedings Volume PC12150, PC1215001 (2022) https://doi.org/10.1117/12.2621255

KEYWORDS: Tandem solar cells, Perovskite, Optical simulations, Solar cells, Silicon, Oxides, Optics manufacturing, Silicon solar cells, Optimization (mathematics), Multijunction solar cells

Read Abstract +

Proceedings Article | 30 May 2022 Presentation

Enhanced photon upconversion using single- and multilayer metasurfaces

Christiane Becker, Doguscan Ahiboz, Phillip Manley, Elina Andresen, Christian Würth, Ute Resch-Genger

Proceedings Volume PC12150, PC121500F (2022) https://doi.org/10.1117/12.2622293

KEYWORDS: Upconversion, Near field, Luminescence, Solar energy, Silicon, Visible radiation, Telecommunications, Sun, Silicon solar cells, Photovoltaics

Read Abstract +

Proceedings Article | 30 May 2022 Presentation

Nanotextured perovskite/silicon tandem solar cells with >28% efficiency

Philipp Tockhorn, Johannes Sutter, Klaus Jäger, Philipp Wagner, Amran Al-Ashouri, Bernd Stannowski, Steve Albrecht, Christiane Becker

Proceedings Volume PC12150, PC1215002 (2022) https://doi.org/10.1117/12.2621667

KEYWORDS: Tandem solar cells, Silicon, Photovoltaics, Perovskite, Optoelectronics, Interfaces, External quantum efficiency, X-rays, X-ray microscopy, X-ray diffraction

Read Abstract +

Proceedings Article | 1 April 2020 Presentation

Energy yield and cost optimizations of large-scale perovskite/silicon tandem bifacial solar power plants (Conference Presentation)

Klaus Jäger, Peter Tillmann, Robert Wenisch, Eugene Katz, Christiane Becker

Proceedings Volume 11366, 1136604 (2020) https://doi.org/10.1117/12.2555919

Read Abstract +

Proceedings Article | 18 September 2018 Presentation

Optimization of nanostructured high efficiency perovskite/c-Si tandem solar cells via numerical simulation (Conference Presentation)

Phillip Manley, Klaus Jäger, Philipp Tockhorn, Sven Burger, Steve Albrecht, Christiane Becker

Proceedings Volume 10731, 107310B (2018) https://doi.org/10.1117/12.2321240

KEYWORDS: Nanostructuring, Tandem solar cells, Numerical simulations, Perovskite, Thin films, Absorption, Optical simulations, Nanostructured thin films, Thin film solar cells, Silicon

Read Abstract +

Proceedings Article | 22 May 2018 Presentation + Paper

Antireflective nanotextures for monolithic perovskite-silicon tandem solar cells

Klaus Jäger, Phillip Manley, Duote Chen, Philipp Tockhorn, David Eisenhauer, Grit Köppel, Martin Hammerschmidt, Sven Burger, Steve Albrecht, Christiane Becker

Proceedings Volume 10688, 106880A (2018) https://doi.org/10.1117/12.2306142

KEYWORDS: Silicon, Absorption, Perovskite, Finite element methods, Solar cells, Tandem solar cells, Antireflective coatings, Reflectivity

Read Abstract +

SPIE Journal Paper | 30 March 2018 Open Access

Nanophotonic light management for perovskite–silicon tandem solar cells

Duote Chen, Phillip Manley, Philipp Tockhorn, David Eisenhauer, Grit Köppel, Martin Hammerschmidt, Sven Burger, Steve Albrecht, Christiane Becker, Klaus Jäger

JPE, Vol. 8, Issue 02, 022601, (March 2018) https://doi.org/10.1117/12.10.1117/1.JPE.8.022601

KEYWORDS: Perovskite, Tandem solar cells, Solar cells, Silicon, Absorption, Nanophotonics, Finite element methods, Computer architecture, Fourier transforms, Crystals

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 30 August 2017 Presentation + Paper

Optical simulations of advanced light management for liquid-phase crystallized silicon thin-film solar cells

Klaus Jäger, Grit Köppel, David Eisenhauer, Duote Chen, Martin Hammerschmidt, Sven Burger, Christiane Becker

Proceedings Volume 10356, 103560F (2017) https://doi.org/10.1117/12.2273994

KEYWORDS: Solar cells, Finite element methods, Silicon films, Silicon, Nanolithography, Refractive index, Nanoimprint lithography, Optical simulations

Read Abstract +

Proceedings Article | 29 April 2016 Paper

Sinusoidal gratings for optimized light management in c-Si thin-film solar cells

Klaus Jäger, Grit Köppel, Carlo Barth, Martin Hammerschmidt, Sven Herrmann, Sven Burger, Frank Schmidt, Christiane Becker

Proceedings Volume 9898, 989808 (2016) https://doi.org/10.1117/12.2225459

KEYWORDS: Silicon, Thin film solar cells, Solar cells, Thin films, Antireflective coatings, Diffraction gratings, Numerical simulations, Finite element methods, Thin film solar cells, Refractive index, Interfaces, Polarization, Maxwell's equations, Absorption

Read Abstract +

Proceedings Article | 18 April 2016 Presentation + Paper

Numerical characterization of symmetry properties for photonic crystals with hexagonal lattice

Carlo Barth, Jürgen Probst, Sven Herrmann, Martin Hammerschmidt, Christiane Becker

Proceedings Volume 9885, 988506 (2016) https://doi.org/10.1117/12.2227094

KEYWORDS: Photonic crystals, Computer simulations, Band structure simulations, Light scattering, Evanescent wave coupling, Electroluminescent displays, Dielectrics, Dielectric polarization, Radon, Mirrors, Neodymium, Maxwell's equations, Photon polarization, Matrices

Read Abstract +

Proceedings Article | 14 March 2016 Paper

Reconstruction of photonic crystal geometries using a reduced basis method for nonlinear outputs

Martin Hammerschmidt, Carlo Barth, Jan Pomplun, Sven Burger, Christiane Becker, Frank Schmidt

Proceedings Volume 9756, 97561R (2016) https://doi.org/10.1117/12.2212482

KEYWORDS: Photonic crystals, Electromagnetism, Finite element methods, Chemical elements, Electroluminescent displays, Silicon, Reflectivity, Solids, Resonance enhancement, Electromagnetic scattering

Read Abstract +

Proceedings Article | 15 May 2014 Paper

Computational analysis of triangular and honeycomb lattice-structured tapered nanoholes for enhanced light trapping in thin-film Si solar cells

Jolly Xavier, Christiane Becker

Proceedings Volume 9140, 91401B (2014) https://doi.org/10.1117/12.2052800

KEYWORDS: Silicon, Absorption, Thin films, Silicon films, Thin film solar cells, Photonic crystals, Glasses, Solar cells, Chemical elements, Crystals

Read Abstract +

For an optimized light harvesting while using diverse periodic photonic light-trapping architectures in low cost thin film crystalline silicon (c-Si) solar cells, it is also of prime importance to tune the features of their lattice point basis structure. In view of this, tapered nanoholes would be of importance for envisaged better light in-coupling due to graded index effect and also from the point of fabrication feasibility. Using a 3D finite element method based computational simulator, we investigate the basis structural influence of triangular as well as honeycomb lattice-structured experimentally feasible tapered air nanoholes in ~400 nm thick c-Si absorber on a glass substrate. We present a detailed convergence analysis of volume absorption in Si absorber with cylindrical as well as tapered nanoholes. For a wavelength rage of 300 nm to 1100 nm, we present the computed results on light absorption of the engineered Si nanoholes for a lattice periodicity of 600nm. In particular, we study the influence of tapering angle of engineered nano air holes in Si thin film for the absorption enhancement in photonic triangular and honeycomb lattice structured tapered nanoholes. Further we make a comparative analysis of cylindrical and tapered nanoholes for a range of light incident angles from 0° to 60°. For the presented triangular as well as honeycomb lattice structured nanoholes, we observe that in comparison to the cylindrical nanoholes, the tapered nanoholes perform better in terms of light trapping for enhanced light absorption in textured Si thin films even when the effective volume fraction of Si is lower in the absorber layer with tapered nanoholes in comparison to that of cylindrical ones. From the maximum achievable short circuit current density estimation in the present study, the performance of c-Si absorbing layer engineered with triangular lattice structured tapered air holes harvests light efficiently owing to its higher lattice symmetry among periodic structures as well as graded index effect of the tapered nanoholes.

Proceedings Article | 15 May 2014 Paper

Light harvesting quasicrystalline nanophotonic structures for crystalline silicon thin-film solar cells

Jolly Xavier, Jürgen Probst, Philippe Wyss, David Eisenhauer, Franziska Back, Eveline Rudigier-Voigt, Christoph Hülsen, Bernd Löchel, Christiane Becker

Proceedings Volume 9140, 914004 (2014) https://doi.org/10.1117/12.2052796

KEYWORDS: Absorption, Silicon, Crystals, Thin film solar cells, Thin films, Nanophotonics, Silicon films, Nanostructures, Light harvesting, Photovoltaics

Read Abstract +

Proceedings Article | 25 September 2013 Paper

Nanophotonic light trapping in polycrystalline silicon thin-film solar cells using periodically nanoimprint-structured glass substrates

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

Proceedings Volume 8824, 88240D (2013) https://doi.org/10.1117/12.2023871

KEYWORDS: Silicon, Absorption, Glasses, Crystals, Nanophotonics, Silicon films, Thin film solar cells, Sol-gels, Solids, Solar cells

Read Abstract +