  The interaction between two-dimensional crystals (2DCs) and metals is
ubiquitous in 2D material research. Here we report how 2DC overlayers influence
the recrystallization of relatively thick metal films and the subsequent
synergetic benefits this provides for coupling surface plasmon-polaritons
(SPPs) to photon emission in 2D semiconductors. We show that annealing 2DC/Au
films on SiO2 results in a 'reverse epitaxial' process where initially
nanocrystalline Au films become highly textured and in close crystallographic
registry to the 2D crystal overlayer. With continued annealing, the metal
underlayer dewets to form an oriented pore enabled network (OPEN) film in which
the 2DC overlayer remains suspended above or coats the inside of the metal
pores. This OPEN film geometry supports SPPs launched by either direct laser
excitation or by light emitted from the TMD semiconductor itself, where energy
in-coupling and out-coupling occurs at the metal pore sites such that
dielectric spacers between the metal and 2DC layer are unnecessary. At low
temperatures a high density of single-photon emitters (SPEs) is present across
an OPEN-WSe2 film, and we demonstrate non-local excitation of SPEs at a
distance of 17 {\mu}m with minimal loss of photon purity. Our results suggest
the OPEN film geometry is a versatile platform that could facilitate the use of
layered materials in quantum optics systems.
