Symposium 2021

MAPEX Symposium 2021

The 2021 MAPEX symposium „Beyond solar cells: new approaches to radiation conversion“ took place September 29 and 30. In numbers, we had about 110 participants from 17 countries, 12 keynote speakers calling in from the US, China, Netherlands, Finland and Germany and 17 poster presentations. As intended, the scope was very wide, touching on various approaches to energy conversion from radiation. Two Early Career Researchers received a poster price which was generously donated by the Royal Society of Chemistry. The talks were delivered in an online video conference over Zoom which certainly facilitated winning international experts and audience, while the poster sessions in took on a more playful nature with virtually real interactions in a simulated conference venue. Still, we were happy to have a real-life social event at the climbing hall which allowed us to meet and talk to members of the MAPEX community without any computer screens for the first time in quite a while! The organizing committee thanks all the attendees and everyone who contributed a talk or a poster for making the symposium such a success.

  • Symposium 2021

    Beyond solar cells: new approaches to radiation conversion

  • Symposium 2021

    Beyond solar cells: new approaches to radiation conversion

  • Symposium 2021

    Beyond solar cells: new approaches to radiation conversion

  • Symposium 2021

    Beyond solar cells: new approaches to radiation conversion

This online workshop aims at bringing together expertise on alternative sources, techniques and materials for radiative energy conversion beyond conventional solar cells. It addresses a wide range of applications including space technologies, radiation therapy, clean energy generation and more.

The workshop will comprise

  • invited talks by internationally renowned speakers

  • poster contributions, including a short oral presentation in advance in dedicated pitch sessions and poster awards for the best presentations

  • an informal live meeting on Wednesday afternoon in Bremen, if the pandemic situation allows.

Online event

Call for posters

open until 19 September 2021!

Poster awards for the best presentations.


Invited speakers

For the complete programme click link above

Patric Seefeldt

Dr.-Ing. Patrick Seefeldt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Raumfahrtsysteme | Mechanik- und Thermalsysteme

Development of new Solar Array Concepts for Space Applications

Solar arrays are the main power source in space. Conventionally they are composed of stiff backing structures and brittle PV cells. While the power demands of space missions are increasing, e.g. for electric propulsion, the increase of…

Dr. Bohan Wu, Beijing Institute of Spacecraft Environment Engineering

Electrospun Polyimide Ultrafine Fibrous Membranes with Enhanced Atomic-Oxygen Resistance via Incorporation of POSS Components: Preparation and Properties

Polyimide (PI) represents a class of important materials in various space applications due to their high thermal resistance, good dielectric and…

Dr. Adrian P. Tighe, ESA/ESTEC

Radiation testing of materials and prospective technologies for future space missions

In this talk I will give an overview of some of the challenges related to the radiation testing of materials for space applications, describing some of the test facilities and techniques, showing results of…

Hans Rabus

Dr. Hans Rabus, Physik. Techn. Bundesanstalt

High-Z nanoparticles for enhanced energy deposition in tumours during radiotherapy

Radiotherapy is a trade-off between tumour control and unwanted side effects in healthy tissue. Both radiation effects depend on the absorbed dose, i.e. energy imparted per mass. Due to proliferation, cancer cells…

Michael D. McGehee

Prof. Michael D. McGehee, Univ. Boulder, Colorado

Triple Halide Perovskite Absorbers for >27% Perovskite/Silicon Tandem Solar Cells with Excellent Stability

Wide bandgap metal halide perovskites are promising candidates to pair with low bandgap silicon, copper indium gallium diselenide, or perovskite photovoltaics for highly efficient…

Caterina Cocchi

Prof. Dr. Caterina Cocchi, Carl von Ossietzky Universität Oldenburg; Humboldt-Universität zu Berlin

Donor/acceptor interfaces in organic and hybrid materials for photovoltaics: Insight from first-principles calculations

Donor/acceptor interfaces are ubiquitous building blocks of organic and hybrid materials for optoelectronic and photovoltaic applications. In-depth understanding of their…

Kai Nordlund

Prof. Dr. Kai Nordlund, Univ. Helsinki

Overview of radiation damage mechanisms in materials

Harvesting energy from any particles with kinetic energies exceeding the energy of chemical bonds, i.e. energies above a few eV, raises the possibility that the particles introduce permanent damage in the materials used for the conversion. The…

Jan Hendrik Bredehöft

Dr. Jan Hendrik Bredehöft, Uni Bremen

Chemical reactions initiated by ionizing Radiation

Conventional wisdom has it that the chemical changes caused by ionizing radiation are due to the formation of radicals and their subsequent (re-)combination. This is especially true in the field of Astrochemistry, where ionizing radiation is the…

Karel Marsalek

Dr. Karel Marsalek, Institute of Aerospace Medicine, German Aerospace Centre

Development and use of active dosimeters for ionising radiation in space

Cosmic radiation is one of the limiting factors for long-duration space missions. For the assessment of radiation risk for humans DLR has been developing among others active radiation detectors for usage (i) onboard ISS, (ii)…

Judith Maschke

Judith Maschke, artec Sustainability Research Center, Uni Bremen

Changes in the energy consumption of private households due to the production and the use of renewable energies

In order to achieve the goals of the German energy transition changes in the energy consumption of private households are also required. In this context, efficiency, consistency and…

Aims and Scope

Harvesting sunlight with semiconductor-based solar cells is without a doubt one of the most important technologies to tackle energy generation as an alternative to or in the absence of fossil fuels. As such, energy-conversion devices such as photovoltaics are critical for generating electricity both to achieve the energy transition on earth as well as for space applications. While electromagnetic radiation from the sun constitutes the major source of convertible radiative energy, other types of radiation can potentially be harvested as well. This includes proton radiation from the sun, radiation from nuclear waste or other types of ionizing radiation. Likewise, conventional solar cells can be substituted or supplemented by alternative energy conversion devices like organic or perovskite solar cells, betavoltaic cells or other advanced materials that interact with ionizing radiation in a predictable and usable way.


For all questions regarding the Symposium please don't hesitate to contact us: mapexprotect me ?!uni-bremenprotect me ?!.de.

Find out more about the organizers (click here)

Updated by: MAPEX