• seit 2015: Wissenschaftlicher Mitarbeiter am Helmholtz-Zentrum Berlin
    Stellvertretender Abteilungsleiter der Abteilung Solarenergieoptik
    Direktor des Joint Lab BerOSE zwischen HZB, Zuse Institut Berlin und FU Berlin
    2015-2017 Co-Chair der Postdoc Vertretung

  • 2013-2014: Postdoc an der TU Delft (Niederlande)

  • 2012-2013: Wissenschaftlicher Mitarbeiter bei Nuon Helianthos BV (Arnhem, Niederlande)

  • 2012: Promotion an der TU Delft (Niederlande); "On the Scalar Scattering Theory for Thin-Film Solar Cells"

Veröffentlichungen

2021


  • Becker, C.; Jäger, K.; Burger, S.: Nanophotonics for Solar Energy. Solar Energy Materials and Solar Cells 221 (2021), p. 110916/1

  • Jäger, K.; Tillmann, P.; Katz, E.A.; Becker, C.: Perovskite/Silicon Tandem Solar Cells: Effect of Luminescent Coupling and Bifaciality. Solar RRL 5 (2021), p. 2000628/1-9

2020


  • Bermel, P.; Saive, R.; Jäger, K.; Yoo, S.: Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019. Optics Express 28 (2020), p. 16027-16029

  • Jäger, K.; Tillmann, P.; Becker, C.: Detailed illumination model for bifacial solar cells. Optics Express 28 (2020), p. 4751-4762

  • Jäger, K.; Tillmann, P.; Katz, E.A.; Becker, C.: Simulating bifacial perovskite/silicon tandem solar cells in large PV fields. In: Optical Devices and Materials for Solar Energy and Solid-state Lighting, PVLED 2020 : Washington; United States; 13 July 2020 through 16 July 2020. Optical Society of America, 2020. - ISBN 978-1-943580-79-8, p. PvTh1G.3/1-2

  • Tillmann, P.; Jäger, K.; Becker, C.: Minimising levelised cost of electricity of bifacial solar panel arrays using Bayesian optimisation. Sustainable Energy & Fuels 4 (2020), p. 254-264

  • Tockhorn, P.; Sutter, J.; Colom, R.; Kegelmann, L.; Al-Ashouri, A.; Roß, M.; Jäger, K.; Unold, T.; Burger, S.; Albrecht, S.; Becker, C.: Improved Quantum Efficiency by Advanced Light Management in Nanotextured Solution-Processed Perovskite Solar Cells. ACS Photonics 7 (2020), p. 2589–2600

2019


  • Becker, C.; Burger, S.; Jäger, K.: Nanooptische Simulationen für optoelektronische Anwendungen. Photonik – Fachzeitschrift für Optische Technologien 2 (2019), p. 42-45
    https://www.photonik.de/nanooptische-simulationen-fuer-optoelektronische-anwendungen/150/21005/386489

  • Jäger, K.; Jošt, M.; Sutter, J.; Tockhorn, P.; Köhnen, E.; Eisenhauer, D.; Manley, P.; Albrecht, S.; Becker, C.: Improving Monolithic Perovskite/Silicon Tandem Solar Cells From an Optical Viewpoint. In: OSA Advanced Photonics Congress (AP) 2019 (IPR, Networks, NOMA, SPPCom, PVLED) : 29 July–2 August 2019, Burlingame, California, United States. Optical Society of America, 2019. - ISBN 978-1-943580-64-4, p. PM4C.2/1-2

  • Jäger, K.; Tillmann, P.; Tejada, A.; Karsenti, A.; Kreinin, L.; Visoly-Fisher, I.; Korte, L.; Unger, E.; Katz, E.A.; Becker, C.: Optical assessment of perovskite-enhanced bifacial silicon solar modules. In: 36th European Photovoltaic Solar Energy Conference and Exhibition. München: WIP Wirtschaft und Infrastruktur, 2019. - ISBN 3-936338-60-4, p. 634-637

2018


  • Becker, C.; Burger, S.; Barth, C.; Manley, P.; Jäger, K.; Eisenhauer, D.; Köppel, G.; Chabera, P.; Chen, J.; Zheng, K.; Pullerits, T.: Nanophotonic-Enhanced Two-Photon-Excited Photoluminescence of Perovskite Quantum Dots. ACS Photonics 5 (2018), p. 4668-4676

  • Chen, D.; Manley, P.; Tockhorn, P.; Eisenhauer, D.; Köppel, G.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.; Jäger, K.: Nanophotonic light management for perovskite–silicon tandem solar cells. Journal of Photonics for Energy 8 (2018), p. 022601/1-14

  • Jošt, M.; Köhnen, E.; Morales-Vilches, A.B.; Lipovšek, B.; Jäger, K.; Macco, B.; Al-Ashouri, A.; Krc, J.; Korte, L.; Rech, B.; Schlatmann, R.; Topic, M.; Stannowski, B.; Albrecht, S.: Textured interfaces in monolithic perovskite/silicon tandem solar cells: advanced light management for improved efficiency and energy yield. Energy & Environmental Science 11 (2018), p. 3511-3523

  • Jäger, K.; Chen, D.; Tockhorn, P.; Eisenhauer, D.; Köppel, G.; Manley, P.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.: Antireflective nanotextures for monolithic perovskite-silicon tandem solar cells. In: Ralf B. Wehrspohn, Alexander N. Sprafke [Ed.] : Photonics for Solar Energy Systems VII : 23-25 April 2018, Strasbourg, France . Bellingham, Wash.: SPIE, 2018 (Proceedings of SPIE ; 10688). - ISBN 978-1-5106-1902-9, p. 10688A/1-7

  • Jäger, K.; Köppel, G.; Hammerschmidt, M.; Burger, S.; Becker, C.: On accurate simulations of thin-film solar cells with a thick glass superstrate. Optics Express 26 (2018), p. A99-A107

  • Jäger, K.; Manley, P.; Eisenhauer, D.; Tockhorn, P.; Sutter, J.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.: Light management with sinusoidal nanotextures. In: Optics for Solar Energy 2018 : Singapore Singapore 5–8 November 2018. Optical Society of America, 2018. - ISBN 978-1-943580-47-7, p. OTC5C.5/1-2

  • MacQueen, R.W.; Liebhaber, M.; Niederhausen, J.; Mews, M.; Gersmann, C.; Jäckle, S.; Jäger, K.; Tayebjee, M.J.Y.; Schmidt, T.W.; Rech, B.; Lips, K.: Crystalline silicon solar cells with tetracene interlayers: the path to silicon-singlet fission heterojunction devices. Materials Horizons 5 (2018), p. 1065-1075

  • Mazzarella, L.; Werth, M.; Jäger, K.; Jošt, M.; Korte, L.; Albrecht, S.; Schlatmann, R.; Stannowski, B.: Infrared photocurrent management in monolithic perovskite/silicon heterojunction tandem solar cells by using a nanocrystalline silicon oxide interlayer. Optics Express 26 (2018), p. A487-A497

  • Trinh, C.T.; Preissler, N.; Sonntag, P.; Muske, M.; Jäger, K.; Trahms, M.; Schlatmann, R.; Rech, B.; Amkreutz, D.: Potential of interdigitated back-contact silicon heterojunction solar cells for liquid phase crystallized silicon on glass with efficiency above 14%. Solar Energy Materials and Solar Cells 174 (2018), p. 187-195

2017


  • Eisenhauer, D.; Köppel, G.; Jäger, K.; Chen, D.; Shargaieva, O.; Sonntag, P.; Amkreutz, D.; Rech, B.; Becker, C.: Smooth anti-reflective three-dimensional textures for liquid phase crystallized silicon thin-film solar cells on glass. Scientific Reports 7 (2017), p. 2658/1-10

  • Jäckle, S.; Liebhaber, M.; Gersmann, C.; Mews, M.; Jäger, K.; Christiansen, S.; Lips, K.: Potential of PEDOT:PSS as a hole selective front contact for silicon heterojunction solar cells. Scientific Reports 7 (2017), p. 2170/1-8

  • Jäger, K.; Korte, L.; Rech, B.; Albrecht, S.: Numerical Optical Optimization of Planar Perovskite-Silicon Tandem Solar Cells with Regular and Inverted Device Architectures. Optics Express 25 (2017), p. A473-A482

  • Jäger, K.; Köppel, G.; Eisenhauer, D.; Chen, D.; Hammerschmidt, M.; Burger, S.; Becker, C.: Optical simulations of advanced light management for liquid-phase crystallized silicon thin-film solar cells. In: Yi-Jun Jen ... [Ed.] : Nanostructured Thin Films X : 9-10 August 2017, San Diego, California, United States. Bellingham, Washington, USA: SPIE, 2017 (Proceedings of SPIE ; 10356). - ISBN 978-1-5106-1169-6, p. 103560F/1-7

2016


  • Albrecht, S.; Saliba, M. ; Correa-Baena, J.-P. ; Jaeger, K.; Korte, L. ; Hagfeldt, A. ; Grätzel, M.; Rech, B. : Towards optical optimization of planar monolithic perovskite/silicon-heterojunction tandem solar cells. Journal of Optics 18 (2016), p. 064012/1-10

  • Albrecht, S.; Saliba, M.; Correa-Baena, J.-P.; Jäger, K.; Korte, L.; Hagfeldt, A.; Grätzel, M.; Rech, B.: Monolithic Perovskite/Silicon Tandem Solar Cells. In: Hardo Bruhns [Ed.] : Energie - Forschung und Perspektiven. Deutsche Physikalische Gesellschaft, 2016. - ISBN 978-3-9818197-0-0, p. 69-82
    http://www.fze.uni-saarland.de/AKE_Archiv/DPG2016-AKE_Regensburg/Buch/DPG2016-Regensburg_Tagungsband_142p.pdf

  • Eisenhauer, D.; Jäger, K.; Köppel, G.; Rech, B.; Becker, C.: Optical properties of smooth anti-reflective three-dimensional textures for silicon thin-film solar cells. Energy Procedia 102 (2016), p. 27-35

  • Eisenhauer, D.; Köppel, G.; Jäger, K.; Rech, B.; Becker, C.: Imprinted Nanostructures for Light Management in Crystalline Silicon Thin-Film Solar Cells on Glass. In: Optical Nanostructures and Advanced Materials for Photovoltaics 2016, Leipzig, Germany, 14–17 November 2016 In: Light, Energy and the Environment, OSA. Optical Society of America, 2016. - ISBN 978-0-9600380-4-6, p. PM2B.5/1-3

  • Jaeger, K.; Hammerschmidt, M.; Köppel, G.; Burger, S.; Becker, C.: On accurate simulations of thin-film solar cells with a thick glass superstrate. In: Optical Nanostructures and Advanced Materials for Photovoltaics. In Proceedings Light, Energy and the Environment Part of Light, Energy and the Environment, 14–17 November 2016, Leipzig, Germany. Optical Society of America, 2016. - ISBN 978-0-9600380-4-6, p. PM3B.5/1-3

  • Jäger, K.; Barth, C.; Hammerschmidt, M.; Herrmann, S.; Burger, S.; Schmidt, F.; Becker, C.: Simulations of sinusoidal nanotextures for coupling light into c-Si thin-film solar cells. Optics Express 24 (2016), p. A569-A580

  • Jäger, K.; Köppel, G.; Barth, C.; Hammerschmidt, M.; Herrmann, S.; Burger, S.; Schmidt, F.; Becker, C.: Sinusoidal Gratings for Optimized Light Management in c-Si Thin-Film Solar Cells. In: Ralf B. Wehrspohn ... [Ed.] : Photonics for Solar Energy Systems VI : 5-7 April 2016, Brussels, Belgium. Bellingham, Washington: SPIE, 2016 (Proceedings of SPIE ; 9898). - ISBN 978-1-5106-0143-7

2015


  • Jäger, K.; Linssen, D.N.P.; Isabella, O.; Zeman, M.: Ambiguities in optical simulations of nanotextured thin-film solar cells using the finite-element method. Optics Express 23 (2015), p. A1060-A1071