Molecular Precursor Approach to Sulfur-Free CuInSe₂: Replacing Thiol Coordination in Soluble Metal Complexes.

ABSTRACT: Solution-processed CuInSe₂ films have generally relied on sulfide or sulfoselenide precursor films that, during the grain growth process, hamper the growth of thicker films and lead to the formation of a fine-grain layer. However, recent research has indicated that sulfur reduction in the precursor film modifies the grain growth mechanism and may enable the fabrication of thicker absorbers that are free of any fine-grain layer. In this work, we pursue direct solution deposition of sulfur-free CuInSe₂ films from the molecular precursor approach. To this end, we tune the amine-thiol reactive solvent system and study the changes to the resulting soluble complexes through a combination of analytical techniques. We show that by reactively dissolving indium(III) selenide an

SUBMITTER: Turnley JW 

PROVIDER: S-EPMC10719915 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature