Full-color fluorescent carbon quantum dots

Quantum dots have innate advantages as the key component of optoelectronic devices. For white light-emitting diodes (WLEDs), the modulation of the spectrum and color of the device often involves various quantum dots of different emission wavelengths. Here, we fabricate a series of carbon quantum dots (CQDs) through a scalable acid reagent engineering strategy. The growing electron-withdrawing groups on the surface of CQDs that originated from acid reagents boost their photoluminescence wavelength red shift and raise their particle sizes, elucidating the quantum size effect. These CQDs emit bright and remarkably stable full-color fluorescence ranging from blue to red light and even white light. Full-color…

• NN
  National Natural Science Foundation of China

  Award: 21671129, 21901154, 21671131, 51605272, 11875185, 41430644
• PF
  Program for Changjiang Scholars and Innovative Research Team in University

  Award: IRT_17R71