... The quality of the spectral data on Ag-MEHPPV precludes an analysis of the kind done above for Ag-PPP. The phenyl rings in the spin coated MEHPPV are expected to lie in the plane of the substrate, ... [11,12]. In this paper, we use ballistic electron emission microscopy and spectroscopy to study charge transport across Ag-polyparaphenylene oligomer (PPP), Ag-Poly-1-methoxy-4-(2-ethylhexyloxy) -p- phenylene-vinylene ... microscopy (BEEM) studies on two metal organic interfaces, Ag-polyparaphenylene (PPP) and Ag- Poly-1-methoxy-4-(2-ethylhexyloxy) -p- phenylenevinylene (MEHPPV), and a metal-molecule interface...