Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications

Geng, Huijuan; Zhang, Xiwei; Liu, Shuowei; Wu, Mengya; Tang, Zhenjie; Su, Yanjie; Zhao, Jiang

doi:10.3390/ma19112275

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Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications

by

Huijuan Geng

¹,

Xiwei Zhang

¹,

Shuowei Liu

¹,

Mengya Wu

¹,

Zhenjie Tang

^1,*,

Yanjie Su

^2,3,* and

Jiang Zhao

^4,*

¹

School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China

²

National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China

³

School of Integrated Circuits (School of Information Science and Electronic Engineering), Shanghai Jiao Tong University, Shanghai 200240, China

⁴

College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

^*

Authors to whom correspondence should be addressed.

Materials 2026, 19(11), 2275; https://doi.org/10.3390/ma19112275

Submission received: 13 April 2026 / Revised: 25 May 2026 / Accepted: 25 May 2026 / Published: 27 May 2026

(This article belongs to the Section Optical and Photonic Materials)

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Abstract

Tin disulfide (SnS₂) has attracted extensive research attention due to its superior properties originating from its unique crystalline structure. However, its practical applications are greatly restricted by difficult morphology regulation and insufficient photoresponse capability. Herein, we successfully synthesized copper and carbon co-doped SnS₂ (Cu-C-SnS₂) nanosheets via a carbon dot-assisted hydrothermal method. The morphology, crystal structure and chemical composition of the obtained samples were characterized by FE-SEM, XRD and XPS. The experimental results reveal that the synthesized Cu-C-SnS₂ presents nanosheet morphology with a bandgap of approximately 2.445 eV. Moreover, carbon dots and copper doping can effectively regulate the morphology of SnS₂, which provides a reliable strategy for the controllable synthesis of SnS₂ nanosheets. Meanwhile, the photoelectric device based on the as-fabricated Cu-C-SnS₂ nanosheets were successfully fabricated, and exhibited favorable photoelectric response under 405 nm light irradiation.

Keywords: SnS₂ nanosheets; carbon dots; hydrothermal synthesis; optoelectronic properties

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MDPI and ACS Style

Geng, H.; Zhang, X.; Liu, S.; Wu, M.; Tang, Z.; Su, Y.; Zhao, J. Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications. Materials 2026, 19, 2275. https://doi.org/10.3390/ma19112275

AMA Style

Geng H, Zhang X, Liu S, Wu M, Tang Z, Su Y, Zhao J. Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications. Materials. 2026; 19(11):2275. https://doi.org/10.3390/ma19112275

Chicago/Turabian Style

Geng, Huijuan, Xiwei Zhang, Shuowei Liu, Mengya Wu, Zhenjie Tang, Yanjie Su, and Jiang Zhao. 2026. "Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications" Materials 19, no. 11: 2275. https://doi.org/10.3390/ma19112275

APA Style

Geng, H., Zhang, X., Liu, S., Wu, M., Tang, Z., Su, Y., & Zhao, J. (2026). Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications. Materials, 19(11), 2275. https://doi.org/10.3390/ma19112275

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Carbon Dot-Assisted Hydrothermal Synthesis of Copper Doped Tin Disulfide Nanosheets for Optoelectronic Applications

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