Felix Lang - Perovskite-based Tandem Photovoltaics for Space Applications скачать в хорошем качестве

Felix Lang - Perovskite-based Tandem Photovoltaics for Space Applications

Relevant papers with the results presented here: https://onlinelibrary.wiley.com/doi/1... https://linkinghub.elsevier.com/retri... More information about the NGSE PhD-Postdoc series and register for future talks go to: https://www.ngse.info/phd-postdoc-ser... Follow us on Twitter at:   / imeet_pv     / ngse_conf   Talk by Felix Lang a Postdoc in the PotsdamPero group at the University of Potsdam (Germany) for the NGSE PhD-Postdoc series on November 10th 2021 ” Perovskite-based Tandem Photovoltaics for Near-Earth, Moon, Mars and Deep Space Applications From Radiation Tolerance to Open Challenges “ Abstract: Efficient perovskite-based multijunction solar cells with a high efficiency-to-mass ratio promise a next-generation of lightweight, flexible solutions to power private space exploration, low-cost space missions, as well as future habitats on the Moon and Mars. This presentation will review the potential of perovskite-based multijunction solar cells – be it perovskite/silicon, perovskite/CIGS, or perovskite/perovskite – for space applications. I will show that current state-of-the-art systems already offer unparalleled power-to-weight ratios and then focus on radiation tolerance, a crucial prerequisite for any space application. Monolithic perovskite/perovskite tandem PV especially exhibit an extraordinary resilience to the harsh radiation environment in space. I will present tests under 68 MeV proton irradiation that reveal negligible degradation (inf to 6%) at a dose of 1013 p+/cm2 where even III-V semiconductor-based space PV degrade sup to 22%. Interestingly there are quite distinct degradation mechanisms between the two systems. High-spatial-resolution PL microscopy, for example, reveals defect clusters in GaAs being responsible for the degradation of current space-PV. On the contrary, there is negligible reduction in PL of the individual perovskite subcells. In fact, bare low-gap and high-gap perovskite absorbers exhibit identically high VOC, FF, and efficiency potentials after irradiation, rendering all-perovskite tandems highly interesting for thin, lightweight, large-area space PV modules & solar blankets. Lastly, I will discuss open challenges regarding the many extremes in outer space, from UV-A, UV-B & VUV to extreme temperature cycles, Atomic-Oxygen, and LILT conditions.