Enhancing Bi_{2S_{3 sensitised mesoporous TiO_{2 solar cells by co-sensitisation with Bi_{2S_{3/CdS quantum dots

Although the Bi2S3 QDs have an ideal bandgap for the efficient light absorbers, the Bi2S3 QDs sensitised solar cells generally indicate low photovoltaic properties owing to the active photocorrosion of Bi2S3 QDs. Herein, we report the enhancement of Bi2S3 QDs sensitised solar cells using the co-sensitisation of Bi2S3 with CdS QDs. By the homogeneous covering as well as effective blocking of photocorrosion and recombination, the CdS/Bi2S3 co-sensitised solar cells showed three-fold increase in efficiency.