The ordered thin-film growth of organic semiconductor on Ag(110).
Growth of ordered perylene thin films on the Ag(110) surface has been investigated with scanning tunneling microscope. By saturating the surface with a monolayer of perylene molecules, two kinds of ordered structures are simultaneously formed with flat-lying perylene molecules on the Ag(110) surface, in which one is commensurate relative to the Ag substrate with a periodicity of while the other is commensurate with a periodicity of (-2724). There is one molecule within the former unit cell with a surface coverage of 0.1 molecule per Ag atom, while there are two molecules within the latter unit cell, which gives a slightly lower surface coverage of 0.091 molecule per Ag atom. Ab initio calculations have been carried out to identify the adsorption geometry and bonding sites.
Han
Huang
H
Physics Department, Zhejiang University, Hangzhou 310027, China. phyhuanghan@zju.edu.cn
Hanjie
Zhang
Z
Botters
Bernhard
B
Qiao
Chen
C
Hongying
Mao
M
Bin
Lu
L
Haiyang
Li
L
Pimo
He
H
Shining
Bao
B