Aqueous synthesis of CdTe-CdS core shell nanocrystals and effect of shell-formation process on the efficiency of quantum dot sensitized solar cells

In this research CdTe nanocrystals (NCs) were synthesized in aqueous solution through a hot-injection chemical precipitation method. Then a shell formation process was carried out to form CdTe-CdS NCs with different shell thickness. Thioacetamide was applied as a thermo-sensitive source of S and the shell making time was altered in the range of 0–120 min. different core-shell CdTe-CdS NCs were utilized for co-sensitization of the photoanode of...