EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 5EO.2.2 Ultra-Thin Photovoltaics for Space Power Systems with Enhanced Radiation Tolerance
Type: Oral
Date: Friday, 10th September 2021
08:30 - 10:00
Author(s): L. Sayre, E. Camarillo Abad, P. Pearce, A.D. Johnson, P.-M. Chausse, P.-M. Coulon, P. Shields, L.C. Hirst
Presenter / Speaker: L. Sayre, University of Cambridge, Cambridge, United Kingdom
Event: Conference Conference
Session: 5EO.2 Concentrators and PV for Space Applications
Topic: 5. 4 Concentrators, PV for Space Applications, and TPV
Summary / Abstract: One of the many applications for III-V semiconductors is in the space photovoltaics industry. Spacecraft such as satellites currently make use of high-cost, high eciency, III-V, multi-junction solar arrays to provide power for their payloads. These multi-junction arrays degrade considerably when exposed to damaging radiation outside of the Earth's atmosphere. This means they are often covered in a layer of rigid protective glass to shield from the bombardment of electrons and protons. Ultra-thin solar cells (UTSC) are proposed as an enabling technology due to their intrinsic radiation tolerance [1] and potential for exible form factors which are advantages over the current industry standard. With increased radiation tolerance it would be possible to reduce or even eliminate protective cover-glass which would decrease weight and therefore decrease launch costs. However, UTSCs absorb less light due to their shorter optical path-length. This necessitates light-trapping structures integrated into the design.