Volume 17, Issue 52 2105683
Research Article

A Facile Approach for Elemental-Doped Carbon Quantum Dots and Their Application for Efficient Photodetectors

Lingfeng Gao

Corresponding Author

Lingfeng Gao

College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd. Cangqian, Yuhang District, Hangzhou, 311121 China

E-mail: [email protected], [email protected], [email protected]

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Lude Wang

Lude Wang

School of Artificial Intelligence and Information Technology, Nanjing University of Traditional Chinese Medicine, No. 138 Xianling Rd., Nanjing, 210023 China

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Artem V. Kuklin

Artem V. Kuklin

Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20 Sweden

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Jie Gao

Jie Gao

Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094 China

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Shouchun Yin

Shouchun Yin

College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd. Cangqian, Yuhang District, Hangzhou, 311121 China

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Hans Ågren

Corresponding Author

Hans Ågren

Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20 Sweden

College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 China

E-mail: [email protected], [email protected], [email protected]

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Han Zhang

Corresponding Author

Han Zhang

College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 China

E-mail: [email protected], [email protected], [email protected]

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First published: 01 December 2021
Citations: 20

Abstract

The present work demonstrates a facile hydrothermal approach to synthesize lanthanide-doped carbon quantum dots (CQDs) with europium and/or gadolinium elements. Taking the advantage of broadband adsorption in the ultraviolet-visible region, the doped QDs are directly used as building blocks for photo-electrochemical (PEC)-type photodetectors (PDs) and their performance is systematically investigated under various conditions. The europium (Eu) and gadolinium (Gd) co-doped (C:EuGd) QDs exhibit better photo-response than the single-elemental doped ones and also show outstanding long-term stability. According to the apparent response to light from 350 to 400 nm, the C:EuGd QDs are demonstrated to hold great potential for narrow-band PDs. This work highlights the practical applications of lanthanide-doped CQDs for PDs, and the results are beneficial for the development of elemental-doped CQDs in general.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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