[16p-B3-1~9] 6.5 Surface Physics, Vacuum

[16p-B3-7] Analysis of adsorption structures and vibrational modes of CO on Si(001)

〇SHINYA OHNO¹, SHOTARO SHIMIZU¹, KAZUMA TANAKA¹, MASATOSHI TANAKA¹, SHINYA YOSHIMOTO², JUN YOSHINOBU² (1.Yokohama Nat'l Univ., 2.ISSP, Univ. of Tokyo)

Keywords:Semiconductor, Chemisorption, Carbon Monoxide

In the present work, we investigated adsorption processes of CO on Si(001) using transmission FT-IR. We found three components (Peak A, Peak B and Peak C) corresponding to the chemisorbed CO. Peak A and Peak B are assigned to the symmetric stretching modes and anti-symmetric stretching modes of adjacent CO pair, respectively. We consider that Peak C may be associated with a defect structure such as the C defect.