  Hexagonal boron nitride (hBN), having an in-plane hexagonal structure in the
sp2 arrangement of atoms, proclaims structural similarity with graphene with
only a small lattice mismatch. Despite having nearly identical atomic
arrangements and exhibiting almost identical properties, the electronic
structures of the two materials are fundamentally different. Considering the
aforementioned context, a new hybrid material with enhanced properties can be
evolved combining both materials. This experiment involves liquid phase
exfoliation of hBN and two-dimensional nanocomposites of GO-hBN with varying
hBN and graphene oxide (GO) ratios. The optical and vibrational studies
conducted using UV-Vis absorption and Raman spectroscopic analysis report the
tuning of electron-phonon interaction (EPI) in the GO-hBN nanocomposite as a
function of GO content (%). This interaction depends on disorder-induced
electronic and vibrational modifications addressed by Urbach energy (Eu) and
asymmetry parameter (q), respectively. The EPI contribution to the induced
disorders estimated from UV-Vis absorption spectra is represented as EPI
strength (Ee-p) and its impact observed in Raman phonon modes is quantified as
an asymmetry parameter (q). The inverse of the asymmetry parameter is related
to Ee-p, as Ee-p ~ 1/|q|. Here in this article, a linear relationship has been
established between Eu and the proportional parameter (k), where k is
determined as the ratio of the intensity of specific Raman mode (I) and q2,
explaining the disorders' effect on Raman line shape. Thus a correlation
between Urbach energy and the asymmetry parameter of Raman mode confirms the
tuning of EPI with GO content (%) in GO-hBN nanocomposite.
