Exciton-Exciton Interaction and Optical Gain in Colloidal CdSe/CdS Dot/Rod Nanocrystals.

Saba, Michele; Minniberger, Stefan; Quochi, Francesco; Roither, Juergen; Marceddu, Marco; Gocalinska, Agnieszka; Kovalenko, Maksym V; Talapin, Dmitri V et al. · Adv Mater · 2009

basic_science · Level V

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Record sourced from PubMed, PMID 25376736.
Also identified by DOI 10.1002/adma.200901482.
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Abstract

Exciton-exciton interaction in dot/rod CdSe/CdS nanocrystals has proved to be very sensitive to the shape of nanocrystals, due to the unique band alignment between CdSe and CdS. Repulsive exciton-exciton interaction is demonstrated, which makes CdSe/CdS dot/rods promising gain media for solution-processable lasers, with projected pump threshold densities below 1 kW cm(-2) for continuous wave lasing.

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