Resumen
A method to grow homogeneous micro-sized diamond clusters on silicon by Hot-Filament Chemical Vapor Deposition in a homemade reactor is reported in this work. Thermal decomposition of a CH4:H2 mixture gases was carried out in a horizontal quartz-tube reactor at 2200 °C filament temperature and 1000 °C substrate temperature at relative low pressure around 150 Torr depositing diamonds on silicon wafers. The diamond micro-structures are formed by nano-crystalline diamonds, they have a rounded shape and a narrow particle size distribution around a micrometer. The diamond micro-structures synthesized in this work showed a strong Raman shift signal, a peak at 1330 cm-1 typical of the diamond and a single optical trap was localized nearby 300 oC by Thermoluminescence analysis indicating that these diamond micro-structures could be a good thermoluminescent dosimeter material. Due to their excellent properties, diamonds obtained by this technique should find application in the biomedical and optoelectronic industry.
Idioma original | Inglés |
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Número de artículo | 20170088 |
Publicación | International Journal of Chemical Reactor Engineering |
Volumen | 15 |
N.º | 6 |
DOI | |
Estado | Publicada - 20 dic. 2017 |
Nota bibliográfica
Publisher Copyright:© 2017 Walter de Gruyter GmbH, Berlin/Boston.