Yellow-emitting colloidal suspensions of silicon nanocrystals: Fabrication technology

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F09%3A00207380" target="_blank" >RIV/00216208:11320/09:00207380 - 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
Yellow-emitting colloidal suspensions of silicon nanocrystals: Fabrication technology
Original language description
Pulverized porous silicon, fabricated by the electrochemical etching of silicon wafers, is used to prepare colloidal suspensions of silicon nanocrystals (ncSi) in various organic solvents including xylene. The porous silicon powder aggregates into largeclumps, making the suspensions scatter light strongly. The suspensions are subsequently gently stirred in optical cuvettes for a period of weeks, in air and at room temperature. The temporal development of spatially resolved photoluminescence emission spectra in the cuvette with xylene ncSi is monitored at regular intervals. The spectra show a slow evolution from the original orange color through blue to a yellow one. After approximately 5 weeks, a yellow emitting 560nm transparent colloidal solution can be extracted from the cuvette, with a high and stable photoluminescence yield 20%
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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