Recovery of Waste Semiconductors for CVD Precursors.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F18%3A00499651" target="_blank" >RIV/67985858:_____/18:00499651 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Recovery of Waste Semiconductors for CVD Precursors.
Original language description
The newly patented method for regeneration of ultrapure silicon and germanium via magnesium silicide and magnesium germanide from waste photovoltaic (PV) cells, broken germanium lenses and waste magnesium chips was utilized to obtain chemical vapour deposition (CVD) precursors for application in electronics, optics or nanoparticles synthesis. Magnesium silicide and germanide were prepared directly by thermal synthesis from waste materials in optimized tube reactor at 400°C and 5 Pa. X-Ray Diffraction (XRD) confirmed 97.9% respective 95% purity of products. The presence of silicon and germanium hydrides (CVD precursors) prepared by acid hydrolysis in the second step of the process was verified by Gas Chromatography–Mass Spectroscopy (GC/MS) and Fourier Transform Infrared Spectroscopy (FTIR). The crude, unrefined mixture of silicon hydrides served as raw material for CVD experiment at different substrates. SEM images confirmed occurrence of various micro and nano particles which could be used in electronics, optics and catalysis.
Czech name
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Czech description
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Project
<a href="/en/project/GA15-14228S" target="_blank" >GA15-14228S: Combined sorption modes for energy storage</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 6th International Conference on Chemical Technology
ISBN
978-80-86238-77-7
ISSN
2336-8128
e-ISSN
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Number of pages
5
Pages from-to
427-431
Publisher name
Czech Society of Industrial Chemistry
Place of publication
Prague
Event location
Mikulov
Event date
Apr 16, 2018
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000461293800079

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