POLYCRYSTALLINE FILMS COMPRISING COPPER-ZINC-TIN-CHALCOGENIDE AND METHODS OF MAKING THE SAME

摘要

In one aspect, methods of making a polycrystalline film are described herein. In some embodiments, a method of making a polycrystalline film comprises providing a nanoparticle composition comprising crystalline nanoparticles of copper-zinc-tin-chalcogenide disposed in a liquid carrier, wherein inorganic ligands are associated with surfaces of the copper-zinc-tin-chalcogenide nanoparticles, the inorganic ligands formed of a metal chalcogenide complex. The method further comprises depositing the nanoparticle composition on a substrate surface and removing the liquid carrier to provide the polycrystalline film of copper-zinc-tin-chalcogenide.