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Cited by 491

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Temperature-Dependent Fluorescence in Carbon Dots

Yu, Pyng, Wen, Xiaoming, Toh, Yon-Rui, Tang, Jau·2012·The Journal of Physical Chemistry C

Abstract

Carbon dots are cost-effective, environmental friendly, and biocompatible nanoparticles with many potential applications in optoelectronics and biophotonics. Their dual fluorescence bands were observed and could be attributed to core and surface state emission. We also conduct temperature-dependent fluorescence measurements from cryogenic to room temperatures. The dual emission bands exhibit similar temperature dependence. The strong electron–electron interactions and weak electron–phonon interactions could account for the very broad photoluminescence (PL) band even at 77 K. Our experimental results also suggest that carbon dots exhibit similar temperature behavior as metallic quantum dots (nanoclusters) but are different from inorganic semiconductor quantum dots. Here, for the first time, we present the temperature-dependent spectroscopic results to shed some light on the presently unclear fluorescence mechanism.

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Metadata

Authors
Yu, P., Wen, X., Toh, Y.-R., & Tang, J.
Venue
The Journal of Physical Chemistry C
Published
2012-11-27
Volume
116
Issue
48
Pages
25552-25557
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
OpenAlex
W2320592746
Cited by
491
References
1
FWCI
10.86
Type
journal article
Language
en
Open access
closed

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