Poortmans, JefJefPoortmansVan Bavel, MiekeMiekeVan Bavel2021-10-182021-10-182009-070738-2553https://imec-publications.be/handle/20.500.12860/16041Solar cell technologies promise higher efficiencyJournal articlehttp://www2.electronicproducts.com/Solar-cell_technologies_promise_higher_efficiency-article-FA_Energy_Jul2009-html.aspx