?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Novel+Concepts+for+High-Efficiency+Lightweight+Space+Solar+Cells&rft.creator=Cappelluti%2C+F&rft.creator=Ghione%2C+G&rft.creator=Gioannini%2C+M&rft.creator=Bauhuis%2C+G&rft.creator=Mulder%2C+P&rft.creator=Schermer%2C+J&rft.creator=Cimino%2C+M&rft.creator=Gervasio%2C+G&rft.creator=Bissels%2C+G&rft.creator=Katsia%2C+E&rft.creator=Aho%2C+T&rft.creator=Niemi%2C+T&rft.creator=Guina%2C+M&rft.creator=Kim%2C+D&rft.creator=Wu%2C+J&rft.creator=Liu%2C+H&rft.description=One+of+the+key+issues+in+the+design+and+development+of+a+satellite+Photovoltaic+Assembly+(PVA)+is+the+trade-off+to+be+made+between+the+available+volume+located+to+the+PVA%2C+its+mass+and+the+total+amount+of+power+that+the+solar+panels+have+to+guarantee+to+the+spacecraft.+The+development+of+high-efficiency%2C+flexible%2C+lightweight+solar+cells+is+therefore+instrumental+to+the+design+of+future+satellites+providing+enhanced+missions+and+services.+Based+on+the+consolidated+development+of+GaAs-based+single+junction+and+lattice+matched+triple-junction+solar+cells%2C+several+research+efforts+are+being+pursued+worldwide+to+further+increase+the+efficiency+and+reduce+mass.+Promising+approaches+include+thin-film+technologies+such+as+Inverted+Metamorphic+and+Epitaxial+Lift-Off+(ELO)%2C+and+the+use+of+nanostructures+or+highly+mismatched+alloys+grown+by+MBE.+We+propose+here+an+alternative+path+towards+the+development+of+lightweight+GaAs-based+solar+cells+with+the+potential+to+exceed+the+Shockley-Queisser+(SQ)+limit+of+single+junction+cells.+Our+approach+is+based+on+the+synergistic+combination+of+thin-film+design%2C+quantum+dots+(QDs)+absorption%2C+and+photonic+nanostructures.+Challenges+and+opportunities+offered+by+the+use+of+QDs+are+discussed.+A+cost-effective+and+scalable+fabrication+process+including+ELO+technology+and+nanoimprint+lithography+is+outlined.+Finally%2C+a+proof-of-concept+design%2C+based+on+rigorous+electromagnetic+and+physics-based+simulations%2C+is+presented.+Efficiency+higher+than+30%25+and+weight+reduction+close+to+90%25+-+owing+to+the+substrate+removal+-+makes+the+proposed+device+to+rank+record+power-to-weight+ratio%2C+with+the+potential+to+become+a+cost-effective%2C+attractive+option+for+next+generation+space+solar+cells.&rft.subject=SHOCKLEY-QUEISSER+LIMIT&rft.publisher=EDP+Sciences&rft.contributor=Fernandez%2C+A&rft.date=2017-01-01&rft.type=Proceedings+paper&rft.publisher=11th+European+Space+Power+Conference+(ESPC)&rft.language=eng&rft.source=+++++In%3A+Fernandez%2C+A%2C+(ed.)+Proceedings+of+the+11th+European+Space+Power+Conference+(ESPC).++(pp.+03007).++EDP+Sciences+(2017)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1573437%2F1%2Fe3sconf_espc2017_03007.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1573437%2F&rft.rights=open