Alternative fabrication methodologies for two-dimensional self-assembled Inorganic-Organic hybrid semiconductors

This report presents the structural and optical properties of(R-NH3)(2)PbI4 type Inorganic-Organic (IO) hybrids, prepared from alternative fabrication techniques, without any excess usage of Iodine. The fabrication relies on common deposition techniques viz., thermal vacuum deposition, electrochemical deposition, and spincoating. The resulting two-dimensional (2D) structures are alternatively stacked-up along c-axis by inorganic (PbI6 extended network) layers with organic (R-NH3)(-) moieties as spacers. These hybrids show strong room-temperature exciton features confined within the lowest inorganic bandgap. The proposed methodologies are simple alternatives to the conventional multi-step fabrication methodologies and are directly applicable to varieties of IO hybrids of different dimensionalities for various optoelectmnic applications.