Figure 7. Standardized fluorescence emission spectra of diluted CQD solution (1:10) with an excitation wavelength from 390 to 490 nm. The black arrow symbolizes the shift of emission maxima depending on the excitation wavelength.

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