TY - JOUR
T1 - Role of surface electronic structure in thin film molecular ordering
AU - Thayer, G. E.
AU - Sadowski, J. T.
AU - Heringdorf, F. Meyer Zu
AU - Sakurai, T.
AU - Tromp, R. M.
PY - 2005/12/16
Y1 - 2005/12/16
N2 - We show that the orientation of pentacene molecules is controlled by the electronic structure of the surface on which they are deposited. We suggest that the near-Fermi level density of states above the surface controls the interaction of the substrate with the pentacene π orbitals. A reduction of this density as compared to noble metals, realized in semimetallic Bi(001) and Si(111)(5×2)Au surfaces, results in pentacene standing up. Interestingly, pentacene grown on Bi(001) is highly ordered, yielding the first vertically oriented epitaxial pentacene thin films observed to date.
AB - We show that the orientation of pentacene molecules is controlled by the electronic structure of the surface on which they are deposited. We suggest that the near-Fermi level density of states above the surface controls the interaction of the substrate with the pentacene π orbitals. A reduction of this density as compared to noble metals, realized in semimetallic Bi(001) and Si(111)(5×2)Au surfaces, results in pentacene standing up. Interestingly, pentacene grown on Bi(001) is highly ordered, yielding the first vertically oriented epitaxial pentacene thin films observed to date.
UR - http://www.scopus.com/inward/record.url?scp=29144449994&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=29144449994&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.95.256106
DO - 10.1103/PhysRevLett.95.256106
M3 - Article
AN - SCOPUS:29144449994
SN - 0031-9007
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 256106
ER -