Carbon dots (CDs) have been regarded as a new star in the family of carbon nanomaterials, and have been widely studied since they were accidentally discovered in 2004. CD-based solid-state luminescent (CD-SSL) materials have the advantages of being environmentally friendly, non-toxic and low cost, which makes them ideal candidates to replace rare earth/semiconductor quantum dot-based luminescent materials. However, because of their quenching caused by aggregation, it is a great challenge to retain their luminescent properties when they are transferred from solution to the solid state. This review gives a brief introduction to the synthesis methods for CDs, followed by a detailed description of the most widely used strategies for the preparation of CD-SSL materials and their typical applications in white light-emitting diodes and optical sensors. Finally, the shortcomings of current research on CD-SSL materials are discussed, and their future in the above-mentioned as well as other fields is briefly considered.

碳点（CDs）被视为碳纳米材料家族中的一颗新星，自 2004 年被意外发现以来得到了广泛的研究。CD 基固态发光（CD-SSL）材料具有以下优点：环保、无毒、低成本，使其成为替代稀土/半导体量子点发光材料的理想选择。然而，由于它们由聚集引起的猝灭，当它们从溶液转移到固态时保持它们的发光特性是一个巨大的挑战。本综述简要介绍了 CDs 的合成方法，然后详细描述了制备 CD-SSL 材料的最广泛使用的策略及其在白光发光二极管和光学传感器中的典型应用。