Bright white light emission from ultrasmall cadmium selenide nanocrystals.

Rosson TE, Claiborne SM, McBride JR, Stratton BS, Rosenthal SJ
J Am Chem Soc. 2012 134 (19): 8006-9

PMID: 22564050 · DOI:10.1021/ja300132p

A simple treatment method using formic acid has been found to increase the fluorescence quantum yield of ultrasmall white light-emitting CdSe nanocrystals from 8% to 45%. Brighter white-light emission occurs with other carboxylic acids as well, and the magnitude of the quantum yield enhancement is shown to be dependent on the alkyl chain length. Additionally, the nanocrystal luminescence remains enhanced relative to the untreated nanocrystals over several days. This brightened emission opens the possibility for even further quantum yield improvement and potential for use of these white-light nanocrystals in solid-state lighting applications.

MeSH Terms (8)

Cadmium Compounds Color Formates Light Nanoparticles Particle Size Selenium Compounds Spectrum Analysis

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