Journal
ADVANCED ENERGY MATERIALS
Volume 11, Issue 41, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202102246
Keywords
all-perovskite tandem photovoltaics; proton-irradiation; radiation hardness; solar cells; space photovoltaics
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Funding
- Alexander von Humboldt Foundation via the Feodor Lynen program
- NREL's LDRD program
- European Research Council (ERC) under the European Union [756962]
- German Federal Ministry of Education and Research (BMBF) [03SF0540]
- German Federal Ministry for Economic Affairs and Energy (BMWi) [0324037C]
- George and Lilian Schiff Fund
- Engineering and Physical Sciences Research Council (EPSRC)
- Winton Sustainability Fellowship
- Cambridge Trust
- Tata Group [UF150033]
- EPSRC [EP/R023980/1]
- European Union [841265]
- Marie Curie Actions (MSCA) [841265] Funding Source: Marie Curie Actions (MSCA)
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This study investigates the potential of an all-perovskite tandem photovoltaic technology for high-specific-power applications, demonstrating its high tolerance to the harsh radiation environment in space. The results show negligible degradation even under high doses of proton irradiation, indicating a fundamentally different origin of radiation damage compared to traditional space PV technologies.
Radiation-resistant but cost-efficient, flexible, and ultralight solar sheets with high specific power (W g(-1)) are the holy grail of the new space revolution, powering private space exploration, low-cost missions, and future habitats on Moon and Mars. Herein, this study investigates an all-perovskite tandem photovoltaic (PV) technology that uses an ultrathin active layer (1.56 mu m) but offers high power conversion efficiency, and discusses its potential for high-specific-power applications. This study demonstrates that all-perovskite tandems possess a high tolerance to the harsh radiation environment in space. The tests under 68 MeV proton irradiation show negligible degradation (<6%) at a dose of 10(13) p(+) cm(-2) where even commercially available radiation-hardened space PV degrade >22%. Using high spatial resolution photoluminescence (PL) microscopy, it is revealed that defect clusters in GaAs are responsible for the degradation of current space-PV. By contrast, negligible reduction in PL of the individual perovskite subcells even after the highest dose studied is observed. Studying the intensity-dependent PL of bare low-gap and high-gap perovskite absorbers, it is shown that the V-OC, fill factor, and efficiency potentials remain identically high after irradiation. Radiation damage of all-perovskite tandems thus has a fundamentally different origin to traditional space PV.
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