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The FuturICT education accelerator
Johnson, J.; Shum, S. Buckingham; Willis, A.; Bishop, S.; Zamenopoulos, T.; Swithenby, S.; MacKay, R.; Merali, Y.; Lorincz, A.; Costea, C.; Bourgine, P.WOS:000312246900010 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2013” ; Education is a major force for economic and social wellbeing. Despite high aspirations, education at all levels can be expensive and ineffective. Three Grand Challenges are identified: (1) enable people to learn orders of magnitude more effectively, (2) enable people to learn at orders of magnitude less cost, and (3) demo...
Detection of ZnS phases in CZTS thin-films by EXAFS
Hartman, Katy; Newman, Bonna K.; Johnson, J. L.; Du, Hui; Fernandes, P. A.; Chawla, Vardaan; Bolin, Trudy; Clemens, Bruce M.; Cunha, A. F. daCopper zinc tin sulfide (CZTS) is a promising Earthabundant thin-film solar cell material; it has an appropriate band gap of ~1.45 eV and a high absorption coefficient. The most efficient CZTS cells tend to be slightly Zn-rich and Cu-poor. However, growing Zn-rich CZTS films can sometimes result in phase decomposition of CZTS into ZnS and Cu2SnS3, which is generally deleterious to solar cell performance. Cubic ...
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