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Recycling of Photovoltaic Cells and other Si, Ge Elecronic Waste.
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SYSNO ASEP 0510208 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV O - Ostatní Název Recycling of Photovoltaic Cells and other Si, Ge Elecronic Waste. Tvůrce(i) Bumba, Jakub (UCHP-M) SAI
Dřínek, Vladislav (UCHP-M) RID, ORCID, SAI
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Kaštánek, František (UCHP-M) RID, SAI, ORCID
Šolcová, Olga (UCHP-M) RID, ORCID, SAIČíslo článku 082 Zdroj.dok. Proceedings Sardinia 2019. - Padova : CISA Publisher, 2019 Poč.str. 6 s. Forma vydání Nosič - C Akce International Waste Management and Landfill Symposium /17./ Datum konání 30.09.2019 - 04.10.2019 Místo konání Cagliari Země IT - Itálie Typ akce EUR Jazyk dok. eng - angličtina Země vyd. IT - Itálie Klíč. slova electronic waste recycling ; silicon ; germanium Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical process engineering CEP TN01000048 GA TA ČR - Technologická agentura ČR Institucionální podpora UCHP-M - RVO:67985858 Anotace New technology for electronic waste recycling to produce ultrapure silicon, germanium or CVD precursors was thoroughly studied, designed and verified. The three-step-process is based on low-temperature synthesis of magnesium silicide (Mg2Si) and/or germanide (Mg2Ge) directly from end-of-life photovoltaic cells and waste magnesium chips in the case of magnesium silicide and from broken germanium optical lenses and magnesium chips in the case of magnesium germanide preparation. The prepared products were characterised by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Spectroscopy (EDX) and Raman spectroscopy, which confirmed high conversion to desired products, its good crystallinity and also homogeneity. Prepared samples were then hydrolysed by phosphoric acid solution to produce silicon and/or germanium hydrides. Their presence was confirmed by Fourier Transform Infrared Spectroscopy (FTIR) and Gas Chromatography–Mass Spectroscopy (GC-MS). In the next step, it was also tested that silicon and also germanium hydrides are relatively instable to the point that they can be easily decomposed into ultrapure elements Si, Ge and hydrogen. Additionally, it is possible to use them as desirable precursors for the preparation of thin silicon and germanium layers or for the synthesis of metal silicides and germanides by Chemical Vapour Deposition (CVD) methods. The thin semiconductive layers are commonly used in microelectronic industry, while metal silicides and germanides could find potential use in the field of catalysis, thermoelectricity and electronics. The only by-product of the whole process, magnesium phosphate, can be used as a fertilizer. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0300740
Počet záznamů: 1