DataVXACS NanoPaper
journal article·2019-09-24

sp2–sp3-Hybridized Atomic Domains Determine Optical Features of Carbon Dots

Nikita V. Tepliakov, Evgeny V. Kundelev, Pavel D. Khavlyuk, Yuan Xiong, Mikhail Yu. Leonov, Weiren Zhu, Alexander V. Baranov, Anatoly V. Fedorov, Andrey L. Rogach, Ivan D. Rukhlenko

ACS Nano· Volume 13· Issue 9
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Source abstract

Abstract

-hybridized amorphous cores. Using a simple quantum chemical approach, we show that the domain hybridization factor determines the localization of electrons and the electronic bandgap inside the domains and analyze how the distribution of this factor affects the emission properties of CDots. Our calculation data fully agree with the experimental optical properties of CDots, confirming the overall theoretical picture underlying the model. It is also demonstrated that fabrication of CDots with large hybridization factors of carbon domains shifts their emission to the red side of the visible spectrum, without a need to modify the size or shape of the CDots. Our theoretical model provides a useful tool for experimentalists and may lead to extending the applications of CDots in biophysics, optoelectronics, and photovoltaics.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Carbon and Quantum Dots Applications · Graphene research and applications · Nanocluster Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Information Optical Technologies Center, ITMO University, Saint Petersburg 197101, Russia

Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR, China

Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Camperdown 2006, NSW, Australia

Funding

Natural Science Foundation of Shanghai · National Natural Science Foundation of China · Ministry of Science and Higher Education of the Russian Federation · Shanghai Pujiang Program

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