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.
Physics Department, Zhejiang University, Hangzhou 310027, China. phyhuanghan@zju.edu.cn
Huang
H
Han
Zhang
Z
Hanjie
Bernhard
B
Botters
Chen
C
Qiao
Mao
M
Hongying
Lu
L
Bin
Li
L
Haiyang
He
H
Pimo
Bao
B
Shining