固态发光碳点的发光机理、 合成与应用研究进展

Research Progress on the Mechanism， Synthesis and Application of Solid-state Luminescent Carbon Dots

摘要

碳点(CDs)作为一种光学性能优异的零维碳纳米材料， 在光电器件及生物成像等领域得到了广泛的应用. 然而， 固态CDs由于聚集造成的共振能量转移和π-π堆积会导致固态发光猝灭， 极大阻碍了其在荧光粉或固态照明等方面的应用. 因此， 研究人员探索了多种获得固态发光CDs的方式. 本文综合评述了CDs固态发光的机理和现阶段常用的合成策略， 介绍了固态发光CDs最新的应用领域，最后指出了制备固态发光CDs面临的困难和挑战.

Abstract

As a 0-dimensional carbon nanomaterial with excellent optical properties， carbon dots（CDs） has been widely used in optoelectronic devices， biological imaging and other fields. However， due to the resonance energy transfer and π-π accumulation caused by the aggregation of solid CDs， the solid emission quenching has greatly hindered its application as phosphors. So the researchers explored a variety of ways to obtain solid-state luminescent CDs. In this paper， the mechanism， classification and research progress of solid-state luminescence CDs are reviewed， and the latest application fields of solid-state luminescence CDs are introduced. Finally， the difficulties and future challenges in the preparation of solid-state luminescent CDs are presented.

关键词

碳点 / 固态发光 / 荧光 / 余辉

Key words

Carbon dots / Solid state luminescence / Fluorescence / Afterglow