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Soft-template synthesis of nitrogen-doped carbon nanodots: tunable visible-light photoluminescence and phosphor-based light-emitting diodes

Authors
Do, SKwon, WRhee, SW
Issue Date
Jul-2014
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY C, v.2, no.21, pp.4221 - 4226
Journal Title
JOURNAL OF MATERIALS CHEMISTRY C
Volume
2
Number
21
Start Page
4221
End Page
4226
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147385
DOI
10.1039/c4tc00090k
ISSN
2050-7526
Abstract
Carbon nanodots (CND) have recently attracted tremendous attention for a variety of optical and optoelectronic applications. Although many attempts have been made to obtain high-quality CND in high yield, there have been few endeavors to regulate its energy structure. In this work, we have synthesized nitrogen-doped carbon nanodots (N-CND) through soft-template synthesis using citric acid and ethylenediamine (EDA) as carbon and nitrogen sources, respectively. The energy structure of N-CND has been modulated by regulating the concentration of EDA. A series of spectroscopic measurements showed that the absorption peak is developed near 370 nm and the photoluminescence peak is red-shifted with increasing nitrogen content. To utilize N-CND's strong near-UV absorption, broad-range visible-light emission, high quantum yield, and good organic compatibility, we have demonstrated phosphor-based light-emitting diodes employing N-CND as a phosphor.
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공과대학 (화공생명공학부)
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