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Structural properties of mechanically ball-milled porous silicon |
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| รหัสดีโอไอ | |
| Creator | 1. Chanika Puridetvorakul 2. Wandee Onreabroy 3. Tula Jutarosaga |
| Title | Structural properties of mechanically ball-milled porous silicon |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2561 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 2 |
| Page no. | 354 |
| Keyword | ball milling, hydrofluoric leaching, nanostructure materials, porous silicon |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | A simple powder technique with hydrofluoric (HF) acid leaching technique was presented for the fabrication of bulkporous silicon (PS). Silicon wafers were crushed, ball milled for various milling times and pressed into pellets under the pressureof 4,000 psi (276 bar). Samples were annealed in H2/Ar and in air. Structural properties of PS were investigated using X-raydiffraction technique, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Crystalline size of Sinanoparticles decreased with increase of milling time and can be improved after mechanical pressing and annealing. Obtained PSpellets had uniform porosity. Porosity of the specimen could be significantly increased with the combination of annealing in airto promote the oxide layer on the silicon nanoparticles and HF leaching to form voids by removing the created oxide layer.Preliminary results showed that the percent porosity can be increased up to 43.6%. |
