The Unusual Thermal Stabilization of MOCVD Precursors by the Dibenzoyl Methanate Group: Liquid Injection MOCVD of Tantalum Oxide and Niobium Oxide Using M(OEt)4(dbm) Precursors

Autor: Williams, P.A., Jones, A.C., Wright, P.J., Crosbie, M.J., Bickley, J.F., Steiner, A., Davies, H.O., Leedham, T.J.
Zdroj: Chemical Vapor Deposition; May 2002, Vol. 8 Issue: 3 p110-116, 7p
Abstrakt: Thin films of tantalum oxide and niobium oxide have been deposited by liquid injection MOCVD using solutions of Ta(OEt)4(dbm) (1) or Nb(OEt)4(dbm) (2) (dbm = dibenzoyl methanate = 1,3-diphenyl-1,3-propanedionate). The presence of the dbm ligand imparts unusual thermal stability to the complexes, allowing oxide films to be deposited at relatively high substrate temperatures (650 °C and higher). Single-crystal X-ray diffraction (XRD) shows the complexes to be mononuclear, with distorted octahedral configurations.
Databáze: Supplemental Index