Two-dimensional (2D) van der Waals solids form a layered structure held together in the solid state through a weak van der Waals interaction out of plane, while the in-plane bonding is through the covalent interaction. In this work, we present our findings on two distinct classes of van der Waals solids, that based on in-organic transition metal dichalcogenides and the other based on a hybrid mixed organic-inorganic composition of 2D perovskites, specifically organo-halides (CH3(CH2)3NH3)2(CH3NH3)n-1PbnI3n+1. In the former case, we will discuss the use of 2D tungsten diselenide (WSe2) and how its light-matter interactions are influenced through the incorporation of organic zerodimensional (0D) on its surface. In the latter case, the optical properties of 2D solution processed Ruddlesden-Popper perovskites are presented towards bendable optoelectronics and the integration of a similar higher dimensional perovskite, methyl ammonium lead iodide (MAPbI3), into solar cell photovoltaics platforms.
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