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Films of chalcogenide Ge–Sb–Te materials were grown by pulsed liquid injection chemical vapor deposition (CVD) technique. Simple thermal CVD without additional process activation and CVD with remote activation of precursor decomposition process by a hot-wire were investigated and compared. Ge(NMe2)4, Sb(NMe2)3 and Te(i-Pr)2 precursors in a form of diluted solutions in toluene were used for depositions. Film composition was controlled by injection parameters, while the thickness was directly related with number of pulses. Hot-wire activated CVD process allows the growth of chalcogenide films of clearly better quality compared to films grown by standard thermal CVD. Uniform, smooth, crystalline Ge2Sb2Te5 films were grown at substrate/wire temperature 300 °C/550 °C and pressure ⩽ 15 Torr, using nitrogen as a carrier gas, on Si, Si/SiO2, Si/Si3N4 and glass substrates. Forty to forty five nanometer …
Publication date: 
1 Dec 2008

A Abrutis, V Plausinaitiene, M Skapas, C Wiemer, O Salicio, M Longo, A Pirovano, Jan Siegel, W Gawelda, S Rushworth, C Giesen

Biblio References: 
Volume: 85 Issue: 12 Pages: 2338-2341
Microelectronic Engineering