Soft-template synthesis of nitrogen-doped carbon nanodots: tunable visible-light photoluminescence and phosphor-based light-emitting diodes
SCOPUS
- Title
- Soft-template synthesis of nitrogen-doped carbon nanodots: tunable visible-light photoluminescence and phosphor-based light-emitting diodes
- Authors
- Do, S; Kwon, W; Rhee, SW
- Date Issued
- 2014-04
- Publisher
- RSC
- 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10981
- DOI
- 10.1039/C4TC00090K
- ISSN
- 0959-9428
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, vol. 2, no. 21, page. 4221 - 4226, 2014-04
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