Purpose: The main purpose of these studies was to give a short review of basic diamonds properties and indicate possibilities of different applications of this material. As an example, the application of CVD (Chemical Vapour Deposition) diamond layer in electrochemistry was shown. Design/methodology/approach: The diamond layers were synthesized using Hot Filament CVD (HF CVD) technique from a mixture of methanol and hydrogen. The physical and electrochemical properties of the obtained layers were studied by Raman spectroscopy and Cyclic Voltammetry (CV). Findings: It was shown that it is possible to synthesize the diamond layers of different morphology and quality. Raman microprobe measurements showed that quality of diamond films deposited by HF CVD method reflect their morphology. CV measurements showed that the fabricated electrodes had wide potential window almost twice bigger in comparison to the classical Pt electrode. Research limitations/implications: The interaction of diamond layers with chemical and biological environment is not complete. Practical implications: CVD diamond (synthetic diamond made by a chemical vapour deposition process) is an important family of materials used in microelectronic and optoelectronic packaging and for laser and detector windows. Its ultra-high thermal conductivity enables to increase microprocessor frequency and output power of microelectronic and optoelectronic devices. Diamond is resistant to chemical attack and chemical sensors based on the fact it can work in harsh environment. Originality/value: The paper underlines an important role of diamond films as a promising material for production of electrodes for electrochemical applications.
2
Dostęp do pełnego tekstu na zewnętrznej witrynie WWW
Badano proces syntezy warstw diamentowych prowadzony metodą HF CVD. Zwrócono uwagę, że zmiana nawet jednego z parametrów procesu wpływa istotnie na zmianę jakości warstwy oraz jej strukturę. W tym celu posłużono się takimi nieinwazyjnymi metodami badawczymi, jak skaningowa mikroskopia elektronowa, spektroskopia Ramana i analiza EDS. Zastosowane metody wzajemnie uzupełniały się i potwierdziły istotny wpływ zawartości metanu w gazie roboczym na jakość oraz wielkość ziaren otrzymanej warstwy diamentowej.
EN
Diamond layers were deposited on a Si substrate by hot-filament chemical vapor deposition from a MeH-H₂ mixt. at 2200°C (W wire) and studied by Raman spectroscopy, scanning electron microscopy and electron dispersive spectroscopy for mol. structure and chem. compn. The grain size in the diamond layer increased with the increasing content of MeH in the gas mixt. (1–3% by vol.).
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.