Hydrogen interaction with Si and Ge surface clusters

✍ Scribed by A.S. Yanovsky; S.V. Kolomoets

• Book ID: 104266268
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 169 KB
• Volume: 54
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/s0042-207x(98)00433-3

✦ Synopsis

Semiempirical calculations of hydrogen interaction with clusters, simulating ordered Si(1 0 0) and Ge(1 0 0) surfaces are presented. Desorption and adsorption pathways for low and high monohydride and dihydride phase coverages are discussed. We have found that desorption from Si(1 0 0)!2;1 : H passes through an asymmetric transitional state at low coverages and through a symmetric one at high coverages. For Ge(1 0 0)!2;1 : H, the surface desorption reaction follows a symmetric path at any surface coverage. At low coverage the desorption reaction from dihydride phase Si(1 0 0)!1;1 : H looks like SiH #SiH P2SiH#H , and at high coverage!SiH #SiH PSi#SiH