Composition effects on exciton recombination dynamics of blue-emitting alloyed Cd<sub>1−<i>x</i></sub>Zn<sub><i>x</i></sub>S/ZnS quantum dots
Wenzhi Wu, Weilong Liu, Qiuju Han, Yachen Gao, Degui Kong, Qingxin Yang
Abstract
With increasing x in core/shell Cd 1− x Zn x S/ZnS QDs, the contribution of short-lived band-edge excitonic to the PL decay increases and the trapping state at the core/shell interface can trap more holes that are excited by multi-exciton Auger process.
Topics & Concepts
ExcitonMaterials scienceTrappingAuger effectExcited stateQuantum dotRecombinationAugerAtomic physicsCore (optical fiber)Shell (structure)Enhanced Data Rates for GSM EvolutionMolecular physicsChemical physicsCondensed matter physicsNanotechnologyPhysicsChemistryComputer scienceGeneEcologyBiologyBiochemistryComposite materialTelecommunicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsPerovskite Materials and Applications