AN STM OBSERVATION OF ADSORPTION OF CuPc ON THE Si(100) SURFACE WITH Bi-LINE STRUCTURES

Abstract

We report the reaction dynamics of the Bi -line structure (BLS) with copper-phthalocyanine ( CuPc )molecules as well as hydrogen and Ag atoms on Si (100) surfaces observed by scanning tunneling microscopy. Co-adsorption of hydrogen and Ag on the Si (100) surface with BLSs brought about agglomeration of Ag atoms on the Si terrace. When CuPc molecules were deposited on the Si (100) surface with BLSs at room temperature, domains with c(4 × 4) periodicity appeared in the terraces near the BLS. When the surface was annealed at 200°C–400°C, the area of the c(4 × 4) domain was increased. The CuPc molecules, adsorbed on BLS, were possibly dissociated by catalytic reaction of Bi atoms.