Figure 14. Simplified scheme for the fluorescence of CQDs under UV light. The colored wavy arrows symbolize the excitation by UV light and the emission of green light.

From

Green and Facile Fabrication of Carbon Quantum Dot-Based Solar Cells

Edwin Bogdan, Leo Weise, Thomas Waitz

World Journal of Chemical Education. 2025, 13(3), 48-53 doi:10.12691/wjce-13-3-2