Abstract
C60 fullerene thin films of average thickness of more than 100 nm can be produced
in vacuum by matrix-assisted pulsed laser evaporation (MAPLE). A 355 nm
Nd:YAG laser was directed onto a frozen target of anisole with a concentration of
0.67 wt% C60. At laser fluences below 1.5 J/cm2, a dominant fraction of the film
molecules are C60 transferred to the substrate without any fragmentation. Highresolution
SEM images of MAPLE deposited films reveal large circular droplets on
the surface with high amount of material concentrated at edges (Fig. 1A). These
features, observed over a wide range of laser fluences, are caused by ejection of
large matrix-fullerene liquid droplets into the gas-phase and subsequent deposition.
At similar laser energies, but using an unfocused laser beam, MAPLE favours
evaporation of matrix and organic molecules, resulting in production of films with
smooth surfaces and minimal contamination (Fig. 1B).
Original language | English |
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Publication date | 2011 |
Publication status | Published - 2011 |
Event | Mediterranean Conference on Innovative Materials and Applications - Beirut, Lebanon Duration: 1 Jan 2011 → … |
Conference
Conference | Mediterranean Conference on Innovative Materials and Applications |
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City | Beirut, Lebanon |
Period | 01/01/2011 → … |