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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Troia, A. Giovannozzi, A. Amato, G. |
| Description | Country affiliation: Italy Author Affiliation: Troia A ( Thermodynamics Division, National Institute of Metrological Research, Strada delle Cacce, 91, 10135 Turin, Italy. a.troia@inrim.it) |
| Abstract | Silicon quantum dots (QDs) have been prepared through ultrasound treatments of light-emitting porous silicon layers (PSL) electrochemically etched from a p(+) type crystalline silicon (c-Si). The sonication treatments allowed separating the porous fraction from the bulk of c-Si as well as to mechanically reduce their dimensions. The ultrasounds processes have been carried out in two different organic solvents (toluene and tetrahydrofuran), and allowed obtaining silicon QDs emitting light in the blue-green part of the visible spectrum (estimated QDs diameter around 5 nm). Moreover, by adding the proper chemicals in the solvents, such as alkenes, or simply paraffin oil, we have stabilized the QDs achieving surface modification and observed an effect on size reduction. Photoluminescence spectra of the QDs, TEM images and a preliminary micro-FTIR investigation of functionalised QDs will be presented in this paper. |
| File Format | HTM / HTML |
| ISSN | 13504177 |
| Issue Number | 4 |
| Journal | Ultrasonics Sonochemistry |
| Volume Number | 16 |
| e-ISSN | 18732828 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2009-04-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Diagnostic Imaging Quantum Dots Silicon Chemistry Ultrasonics Microscopy, Electron, Transmission Spectrometry, Fluorescence Spectroscopy, Fourier Transform Infrared Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Environmental Chemistry Acoustics and Ultrasonics Radiology, Nuclear Medicine and Imaging Chemical Engineering Inorganic Chemistry |
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