Formation of uniform ferrocenyl-terminated monolayer covalently bonded to Si using reaction of hydrogen-terminated Si(1Â 1Â 1) surface with vinylferrocene/n-decane solution by visible-light excitation

► Ferrocenyl-terminated monolayer was directly formed on Si by visible-light excitation. ► The uniformity of the resulting VFC-SAM was examined by AFM. ► The resulting VFC-SAM on n-type Si showed positive photo-responsivity.