High open-circuit voltage in lead sulfide quantum dot solar cells <i>via</i> solution-phase ligand exchange with low electron affinity cadmium halides
Neha V. Dambhare, Arindam Biswas, Anjali Sharma, Dipak Dattatray Shinde, Chandan Mahajan, Anurag Mitra, Arup K. Rath
Abstract
A solution-phase ligand exchange strategy is developed for cadmium halide ligands to passivate PbS quantum dots. The cadmium halide passivation curtails bandtail and trap states to achieve a record 0.7 V open circuit voltage in solar cells.
Topics & Concepts
PassivationHalideOpen-circuit voltageQuantum dotCadmium sulfideCadmiumLigand (biochemistry)Lead sulfideChemistrySulfideElectronInorganic chemistryMaterials scienceOptoelectronicsVoltageNanotechnologyPhysicsOrganic chemistryLayer (electronics)BiochemistryReceptorQuantum mechanicsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications