Optimizing kesterite solar cells from Cu<sub>2</sub>ZnSnS<sub>4</sub> to Cu<sub>2</sub>CdGe(S,Se)<sub>4</sub>
Robert B. Wexler, Gopalakrishnan Sai Gautam, Emily A. Carter
Abstract
We report the computational discovery of a chemical composition for kesterite-type solar cell absorbers, Cu<sub>2</sub>CdGeS<sub>3</sub>Se, that solves the key challenges associated with Cu<sub>2</sub>ZnSnS<sub>4</sub> defect thermodynamics while showing an optimal band gap and bulk stability.
Topics & Concepts
KesteriteCZTSMaterials scienceSolar cellBand gapKey (lock)CrystallographyChemical stabilityStructural stabilityThermodynamicsOptoelectronicsPhysicsChemistryComputer scienceStructural engineeringEngineeringComputer securityChalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And PropertiesPerovskite Materials and Applications