Laser Photolysis and Thermolysis of Organic Selenides and Tellurides for Chemical Gas-phase Deposition of Nanostructured Materials

Abstract

Laser radiation-induced decomposition of gaseous organic selenides and tellurides resulting in chemical deposition of nanostructured materials on cold surfaces is reviewed with regard to the mechanism of the gas-phase decomposition and properties of the deposited materials. The laser photolysis and laser thermolysis of the Se and Te precursors leading to chalcogen deposition can also serve as a useful approach to nanostructured chalcogen composites and IVA group (Si, Ge, Sn) element chalcogenides provided that it is carried out simultaneously with laser photolysis or thermolysis of polymer and IVA group element precursor.

Using Anisotropy Measurements from A-Band Photodissociation to Interrogate the Excited States of H2Se

“…It is demonstrated that from such measurements it is possible (in conjunction with theoretical calculations) ,− to infer which excited states are involved in the photodissociation of H 2 Se in its first diffusive band. Finally, it should be noted that understanding the fate of photolyzed group VI compounds under conditions ranging from ices to metal deposition environments remains a challenge, − and the current work lends insight into understanding the photolysis of such species.…”