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

Abstract

This report presents the structural and optical properties of(R-NH 3 ) 2 PbI 4 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 (PbI 6 extended network) layers with organic (R–NH 3 ) - 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 optoelectronic applications. • Novel methodologies for IO hybrids without metal halide and excess of halide usage. • Efficient direct conversion of pure Pb metal films into perfect layered 2D IO hybrids. • Nano and microcrystal fabrication from lead acetate based electrodeposition. • Strong room-temperature exciton photoluminescence from IO hybrids is demonstrated.