Method of depositing arsine, antimony and phosphine substitutes

Abstract

Abstract The present invention addresses the use of at least partially fluorinated organometallic compounds in reactive deposition applications. More specifically, the present invention addresses the use of the fluoroorganometallic compounds M(CF 3 ) 3 , M(CF 2 CF 3 ) 3 , or any M(C n F.sub.(2n+1)) 3-y H y compound where (y≦2), M(CH 2 CF 3 ) 3 or any fluoroalkyl organometallics of the general formula M(C n H.sub.[(2n+1)-x] F x ) 3-y H y , where y≦2; x has a value 1≦x≦2n+1; and M=As, P, or Sb, in processes requiring deposition of the corresponding element. These uses include a number of different processes; the organometallic vapor phase epitaxy of compound semiconductor materials such as GaAs, InP, AlGaAs, InSb, etc.; doping of SiO 2 or borosilicate based glasses to enhance the reflow properties of the glass; in-situ n-type doping of silicon epitaxial material; sourcing of arsenic or phosphorus for ion implantation; chemical beam epitaxy; and diffusion doping into electronic materials such as silicon dioxide, silicon and polycrystalline silicon. These types of materials generally have high volatilities, low toxicities, labile metal-ligand bonds, and stable decomposition products. Specifically, the use of tris-trifluoromethyl arsenic (As(CF 3 ) 3 ) as a substitute for arsine in the manufacture of silicon integrated circuits, Group III-V compound semiconductors, optoelectronics and other electronic devices has been identified.

Inventors

• 👤 David A. Bohling
• 👤 Gregory T. Muhr
• 👤 David A. Roberts

Bibliographic Details