Volume 18, Issue 41 2203152
Research Article

Ultra-Broadband Random Laser and White-Light Emissive Carbon Dots/Crystal In-Situ Hybrids

Jingjing Wang

Jingjing Wang

State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083 P. R. China

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Shaofeng Zhang

Shaofeng Zhang

Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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Yunfei Li

Yunfei Li

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Cuiyu Wu

Cuiyu Wu

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Wenfei Zhang

Corresponding Author

Wenfei Zhang

Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 P. R. China

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

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Hailong Zhang

Corresponding Author

Hailong Zhang

State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083 P. R. China

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

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Zheng Xie

Corresponding Author

Zheng Xie

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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

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Shuyun Zhou

Shuyun Zhou

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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First published: 26 August 2022
Citations: 9

Abstract

The continuous white-light emission of carbon dots (CDs) can be applied to producing multicolor laser emissions by one single medium. Meanwhile, the solid-state emission greatly contributes to its practical application. In this work, a strategy to realize the in-situ hybridization of silane-functionalized CDs (SiCDs) and 1,3,5-benzenetricarboxylic acid trimethyl ester (Et3BTC) by a one-pot solvothermal method is reported. Significantly, the SiCDs/Et3BTC hybrid crystals exhibit ultra-broadband random laser emission over the near ultraviolet-visible region under 265 nm nanosecond pulsed laser excitation. The wavelength region of laser emission is achieved from 315 to 600 nm within an emission band of CDs-based materials. It is worth noting that the wavelength range of the laser is wider than the previously reported works. It is proposed that the continuous white-light emission of SiCDs caused by multiple fluorescence centers mainly gives rise to the broadband random laser emission. Moreover, the crystals are conducive to forming resonance and realizing solid-state laser emission. This in-situ method is expected to enable a more convenient, cheaper, and greener approach to prepare luminescent hybrids for application in multicolor laser displays, multi-level laser anti-counterfeiting, supercontinuum light sources, and so on.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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