Biomass-derived carbon quantum dot sensitizers for solid-state nanostructured solar cells

Abstract

New hybrid materials consisting of ZnO nanorods sensitized with three different biomass-derived carbon quantum dots (CQDs) were synthesized, characterized, and used for the first time to build solid-state nanostructured solar cells. The performance of the devices was dependent on the functional groups found on the CQDs. The highest efficiency was obtained using a layer-by-layer coating of two different types of CQDs.

Keywords: biomass; carbon dots; hydrothermal carbonization; solar cells; sustainable chemistry.