Open AccessIn situ investigation of structural properties during formation of pentacene thin film on Ag (110) with MBE-LEED
Author(s) -
王业亮,
时东霞,
季威,
杜世萱,
郭海明,
刘虹雯,
高鸿钧
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.877
Subject(s) - in situ , materials science , pentacene , thin film , nanotechnology , chemical physics , chemical engineering , thin film transistor , chemistry , organic chemistry , layer (electronics) , engineering
The structural transition of pentacene thin films on single Ag (110) crystals has been directly observed using a home-designed in situ low-energy electron diffraction during the course of absorption and subsequently changes of substrate temperature.The pentacene moleculs showed the evolution from disordered structure in the submonolayer region to a well-ordered structure in the monolayer on the substrate at room temperature.The experimental and theoretical results showed that the molecules lay flat on the Ag (110) surface with two domain orientations mirrored with respect to the crystal axis of the silver substrate.Furthermore, the ordered structures can keep stable when the substrate temperature is below the sublimation temperature of pentacene.