101604 20210902121816.0 doi 10.1002/ejic.202000261 sideral 118239 ART-2020-118239 eng Asensio, M.P. High Recovery of Selenium from Kesterite-Based Photovoltaic Cells 2020 Access copy available to the general public Unrestricted The use of photovoltaic cells is constantly increasing and, in particular, a new generation of thin-film photovoltaic (PV) cells is under development. The absorber of these new cells, kesterite (CZT(S)Se), is composed of abundant chemical elements. Nonetheless, the development of the recycling process for these elements is indispensable for circular economy. This research is focused on the recovery of selenium by thermal oxidation and subsequent reduction. Thus, recycling of selenium has been firstly studied on synthetic kesterite and then validated in a real sample of kesterite extracted from glass-based PV cells. The best results were obtained in a vertical tubular furnace at 750 °C with an input of 20 mL/min of air. The posterior reduction process of selenium oxide was achieved by ascorbic acid, a common and economic reagent. Real kesterite was extracted from PV cells by thermal treatment at 90 °C for 1 hour to remove the encapsulant and ulterior treatment with HCl for the release of kesterite absorber. Optimal conditions from synthetic kesterite were applied to a real sample, recovering more than 90 % of selenium with a purity of 99.4 %. info:eu-repo/grantAgreement/EC/H2020/720907/EU/Scientists look to the Earth’s crust to securely advance PV technology/STARCELL This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 720907-STARCELL info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.524 2020 CHEMISTRY, INORGANIC & NUCLEAR 20 / 45 = 0.444 2020 Q2 T2 0.667 2020 Inorganic Chemistry 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-6674-7364 Abás, E. Pinilla, J.L. (orcid)0000-0002-5801-3352 Laguna, M. 2020, 22 (2020), 2203-2209 Eur. j. inorg. chem. European Journal of Inorganic Chemistry 1434-1948 560428 http://zaguan.unizar.es/record/101604/files/texto_completo.pdf Postprint 1048640 http://zaguan.unizar.es/record/101604/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:101604 articulos driver 2021-09-02-10:05:08 ARTICLE