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11.05 NW-Solar


High-efficiency Nanowire Solar Cells by Carrier Multiplication

This project will demonstrate an entirely new class of ultrahigh-efficiency solar cells based on merging two highly promising concepts, i.e., 3D-structured nanowire (NW) arrays in conjunction with unique carrier multiplication effects in quantum nanomaterials. Advancement in this highly ambitious frontier will be realized by a well-concerted cooperation between theory and device materials engineering and characterization. In particular, multi-band cellular Monte Carlo simulations will predict the competition between carrier multiplication rates and energy loss mechanisms (electron-phonon interaction and scattering) in strongly confined, ultrathin III-V semiconductor NWs, thereby defining guidelines for the bottom-up growth of complex p-n heterojunction core-shell NW-based solar cells using scalable epitaxial growth methods. Importantly, we will tune core diameter, material composition, electronic band offset, as well as doping concentrations which are the most relevant key parameters governing the scaling behaviour of carrier multiplication and photocurrent properties, as will be evaluated by ultrafast transient absorption spectroscopy. Ultimately, functional solar cells will be fabricated and the key device performance metrics evaluated. This project draws upon the distinct core competences of leading groups in semiconductor NWs and their devices via a strongly multidisciplinary approach including Materials Science & Electrical Engineering (TUM}, Computational Nanoelectronics (ASU), and Solar Energy Conversion Science & Technology (NREL), and presents an excellent opportunity for IGSSE to contribute to the promotion of this high-potential research field.

IGSSE setup of interdisciplinary research in project teams

Apply now: 12th call for proposals

IGSSE supports up to 10 new project teams

Call closes 2 July 2017


Apply now: IGSSE travel grant for ICCE 2017

28-29 September 2017, TU Darmstadt

Submission deadline for abstracts: 18 June 2017


IGSSE Forum 2017

29-31 May 2017, TUM Science and Study Center Raitenhaslach, Burghausen


Climate-KIC: Join the PhD Catapult

Two-week thematic summer schools across Europe


IAS Symposium: Selected topics in science and technology

8-10 May 2017, IAS Building, Garching Campus


IAS Coffee Talk with PTL Florian Praetorius

3 May 2017, 1 pm, TUM IAS Building, Garching Campus


10th IGSSE Forum

1 - 4 June 2016, TUM Science and Study Center, Burghausen


10th IGSSE Forum

Smart cooperation - science and technology in, with and for society


The Science of Cooking

Doctoral Candidates explore the Secrets of a great Dinner



Having heard of a great Canadian Kick-Off Meeting, everyone at IGSSE was thrilled to welcome the...


Breakfast at IGSSE´s

Meet the IGSSE team every other month! All the things IGSSE members wanted to asked but never dared...


Save the Date: Canadian ATUMS Speaker on "Global Science- Global Career"

26. November 2015, 6-8 pm, IAS Faculty Club, Garching Campus

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Friday, 09. June 2017
Workshop: Standing up for science
9 June 2017, 9am-4pm, Brussels
Apply now: McKinsey 'Forschergeist' symposium
9-11 June 2017, Berlin For doctoral researchers and postdocs!