Carbon‐Based Quantum Dots with Solid‐State Photoluminescent: Mechanism, Implementation, and Application,Small

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Carbon‐Based Quantum Dots with Solid‐State Photoluminescent: Mechanism, Implementation, and Application
Small ( IF 13.0 ) Pub Date : 2020-11-03 , DOI: 10.1002/smll.202004621
Anli Xu _{1,

2} , Gang Wang _{1,

2,

3} , Yongqiang Li _{1,

2} , Hui Dong _{1,

2} , Siwei Yang _{1,

2} , Peng He _{1,

2} , Guqiao Ding _{1,

2}

Affiliation

Carbon‐based quantum dots (CQDs), including spherical carbon dots and graphene quantum dots, are an emerging class of photoluminescent (PL) materials with unique properties. Great progress has been made in the design and fabrication of high‐performance CQDs, however, the challenge of developing solid‐state PL CQDs have aroused great interest among researchers. A clear PL mechanism is the basis for the development of high‐performance solid‐state CQDs for light emission and is also a prerequisite for the realization of multiple practical applications. However, the extremely complex structure of a CQD greatly limits the understanding of the solid‐state PL mechanism of CQDs. So far, a variety of models have been proposed to explain the PL of solid‐state CQDs, but they have not been unified. This review summarizes the current understanding of the solid‐state PL of solid‐state CQDs from the perspective of energy band theory and electronic transitions. In addition, the common strategies for realizing solid‐state PL in CQDs are also summarized. Furthermore, the applications of CQDs in the fields of light‐emitting devices, anti‐counterfeiting, fingerprint detection, etc., are proposed. Finally, a brief outlook is given, highlighting current problems, and directions for development of solid‐state PL of CQDs.

中文翻译：

具有固态光致发光的碳基量子点：机理，实施和应用

碳基量子点（CQD），包括球形碳点和石墨烯量子点，是一类新兴的具有独特性能的光致发光（PL）材料。在高性能CQD的设计和制造方面已取得了巨大进步，但是，开发固态PL CQD的挑战引起了研究人员的极大兴趣。清晰的PL机制是开发用于发光的高性能固态CQD的基础，也是实现多种实际应用的前提。但是，CQD的极其复杂的结构极大地限制了对CQD固态PL机制的理解。到目前为止，已经提出了多种模型来解释固态CQD的PL，但它们尚未统一。这篇综述从能带理论和电子跃迁的角度总结了当前对固态CQD固态PL的理解。此外，还总结了在CQD中实现固态PL的常见策略。此外，还提出了CQD在发光器件，防伪，指纹检测等领域的应用。最后，简要概述了当前的问题以及CQD固态PL的发展方向。

更新日期：2020-12-03

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