کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5368308 1388390 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Growth of pentacene on Ag(1 1 1) surface: A NEXAFS study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Growth of pentacene on Ag(1 1 1) surface: A NEXAFS study
چکیده انگلیسی

Thin films of pentacene (C22H14) have become widely used in the field of organic electronics. Here films of C22H14 of thickness ranging from submonolayer to multilayer were thermally deposited on Ag(1 1 1) surface. The determination of molecular geometry in pentacene films on Ag(1 1 1) studied by X-ray absorption at different stages of growth up to one monolayer is presented.XAS spectra at the C K-edge were collected as a function of the direction of the electric field at the surface. The different features of the spectra were assigned to resonances related to the various molecular unoccupied states by the comparison with the absorption coefficient of the pentacene gas phase. The transitions involving antibonding π states show a pronounced angular dependence for all the measured coverages, from submonolayer to multilayer. The spectra analysis indicates a nearly planar chemisorption of the first pentacene layer with a tilt angle of 10°.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 1, 31 October 2007, Pages 103-107
نویسندگان
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