Broadband optical non-linearity induced by charge-transfer excitons in type-II CdSe/ZnTe nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 23765798.
- Also identified by DOI 10.1002/adma.201301559.
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Abstract
Benefiting from excitonic charge-transfer states, an efficient non-linear optical response is observed in type-II nanocrystals by four-wave mixing when the incident photon energy lies below the bandgaps of constituent semiconductors. The non-linear optical properties in nanocrystals can be manipulated by the band alignment of the core-shell components, which serves as a promising platform to design broadband non-linear optical devices.