| 초록 |
The emergence of fluoresecent graphene quantum dots (GQDs) promises a new class of optical material with useful properties of tunable luminescence, superior photostability, low toxicity, and chemical resistance. In this study, we demonstrate a novel approach by Graphite Intercalation Compounds (GICs) to produce high quality GQDs with high quantum yields. Furthermore, the carrier dynamics in fluorescence of GQDs are in-depth investigated to shed light on the orgins of their fluorescence. To make the best these GQDs with the high QYs, we directly empolyed the first GQDs light-emitting diodes (GQD-LEDs) with electroluminescence that exceeds 1,000 cd/m2. The GQDs of new types will allow control of the fundamental properties of materials through intrinsic/extrinsic effects, which will further allow new devices to be developed with extraordinary properties and functions for numerous applications. |
