  In this manuscript, we describe optical emission of heterostructure of
hetero-stack between 2D TMDs (MoS2, WS2, and ReS2) and BN. Similar to our
previous results on the stack of similar type of TMDs, intense PL emission peak
is observed around 2.13 eV but is split around 2.13eV into two or more peaks
depending on the different stack of TMDs with BN. The transitions from the
valence band of BN to conduction bands of different TMD stacks due to quantum
coupling and specific orientation explain the strong peak in the PL spectra.
