IR laser co-pyrolysis of (CH3)2Te and (CH3)4Sn: Gas-phase formation and deposition of nanostructured SnTe

✍ Scribed by Dana Pokorná; Jaroslav Boháček; Vladimír Vorlíček; Jan Šubrt; Zdeněk Bastl; Elvira A. Volnina; Josef Pola

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 219 KB
• Volume: 75
• Category: Article
• ISSN: 0165-2370
• DOI: 10.1016/j.jaap.2005.03.008

✦ Synopsis

The first example on the gas phase synthesis of a metal chalcogenide through reactions between clusters of the metal and chalcogene is reported. Pulsed CO 2 laser-induced and SF 6 -photosensitized homogeneous co-pyrolysis of gaseous (CH 3 ) 4 Sn and (CH 3 ) 2 Te results in chemical vapour deposition of nanostructured SnTe as proved by Raman and X-ray photoelectron spectroscopy and electron microscopy. The proposed mechanism of SnTe formation is explained by an intermediacy of Sn and Te clusters that are generated from pyrolysis of (CH 3 ) 4 Sn and (CH 3 ) 2 Te and that react in a hot reaction zone to SnTe.