Ultraviolet and electron radiation induced fragmentation of adsorbed ferrocene

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.362474· OSTI ID:285398

Welipitiya, D; Green, A; Woods, J P; Dowben, P A ^[1]; Robertson, B W; Byun, D ^[2]; Zhang, J ^[3]

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1. Department of Physics and the Center for Materials Research and Analysis, Behlen Laboratory for Physics, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)
2. Department of Mechanical Engineering and the Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)
3. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6030 (United States)

From thermal desorption spectroscopy we find that ferrocene, Fe(C{sub 5}H{sub 5}){sub 2}, adsorbs and desorbs associatively on Ag(100). Photoemission results indicate that the initially adsorbed surface species closely resembles that of molecular ferrocene. The shift in photoemission binding energies relative to the gas phase is largely independent of the molecular orbital. We find that ultraviolet light does lead to partial fragmentation of the ferrocene and that the molecular fragments are much more strongly bound to the surface than the associatively adsorbed ferrocene. Since fragmentation occurs only in the presence of incident radiation, selective area deposition from this class of molecules is possible. Using a focused electron beam in a scanning transmission electron microscope, we show that selective area deposition of features with resolution of a few hundred angstroms is readily achieved. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-84OR21400; FG02-95ER12177
• OSTI ID: 285398
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
ADSORPTION
CHEMICAL VAPOR DEPOSITION
CVD
ELECTRON BEAMS
FERROCENE
FRAGMENTATION
PHOTOEMISSION
RADIATION EFFECTS
SILVER
SORPTIVE PROPERTIES
SYNCHROTRON RADIATION
ULTRAVIOLET RADIATION
USES