Figure 10. FTO glass coated with a titanium(IV)-oxide layer and sensitized with CQD solution (a, left), FTO glass painted with graphite layer (a, right), assembly of solar cell (b). The hatched surfaces are covered with adhesive tape.

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