We report the use of silver-indium-sulfide (AgInS2) quantum dots (QDs) as heavy metal-free photosensitizer for QDs-sensitized solar cell. For fabricating the TiO2/AgInS2electrode, the QDs were attached to a mesoporous TiO2surface by using bifunctional linker molecules. The fabricated TiO2/AgInS2electrode exhibits light absorption in the visible region and serves as the photoanode. Upon bandgap excitation, injection of photoexcited electrons from AgInS2QDs into the TiO2matrix produces photocurrents accordingly. The proof-of-concept AgInS2QDs-sensitized solar cell exhibits a short-circuit current of 0.49 mA/cm2 and open-circuit voltage of 0.24 V, under one sun illumination.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Physics and Astronomy(all)