Fig. 4From: Tantalum disulfide quantum dots: preparation, structure, and propertiesa UV-Vis absorption spectra of TaS2 QDs and TaS2 QDs in natural light, 254 nm and 365 nm UV light illumination; b the direct band gap spectrum of the TaS2 QDs by Tauc method; c energy level diagram of TaS2 QDsBack to article page