  As an organic semiconductor and a prototypical acceptor molecule in organic
photovoltaics, C$_{60}$ has broad relevance to the world of organic thin film
electronics. Although highly uniform C$_{60}$ thin films are necessary to
conduct spectroscopic analysis of the electronic structure of these
C$_{60}$-based materials, reported C$_{60}$ films show a relatively low degree
of order beyond a monolayer. Here, we develop a generalizable two-stage growth
technique that consistently produces single-domain C$_{60}$ films of
controllable thicknesses, using Au(111) as an epitaxially well-matched
substrate. We characterize the films using low-energy electron diffraction,
low-energy electron microscopy, scanning tunneling microscopy, and
angle-resolved photoemission spectroscopy (ARPES). We report highly oriented
epitaxial film growth of C$_{60}$/Au(111) from 1 monolayer (ML) up to 20 ML
films. The high-quality of the C$_{60}$ thin films enables the direct
observation of the electronic dispersion of the HOMO and HOMO-1 bands via ARPES
without need for small spot sizes. Our results indicate a path for the growth
of organic films on metallic substrates with long-range ordering.
