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Title: Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Vanderbilt University
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1049140
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 134; Journal Issue: 19; Journal ID: ISSN 0002-7863
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CADMIUM SELENIDES; CARBOXYLIC ACIDS; CHAINS; FLUORESCENCE; FORMIC ACID; LUMINESCENCE

Citation Formats

Rosson, Teresa, Claiborne, Sarah, McBride, James, Stratton, Benjamin S, and Rosenthal, Sandra. Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals. United States: N. p., 2012. Web. doi:10.1021/ja300132p.
Rosson, Teresa, Claiborne, Sarah, McBride, James, Stratton, Benjamin S, & Rosenthal, Sandra. Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals. United States. https://doi.org/10.1021/ja300132p
Rosson, Teresa, Claiborne, Sarah, McBride, James, Stratton, Benjamin S, and Rosenthal, Sandra. 2012. "Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals". United States. https://doi.org/10.1021/ja300132p.
@article{osti_1049140,
title = {Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals},
author = {Rosson, Teresa and Claiborne, Sarah and McBride, James and Stratton, Benjamin S and Rosenthal, Sandra},
abstractNote = {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.},
doi = {10.1021/ja300132p},
url = {https://www.osti.gov/biblio/1049140}, journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 19,
volume = 134,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2012},
month = {Sun Jan 01 00:00:00 EST 2012}
}