What precursor materials should I use for Cadmium and Sulphur and what are the optimal deposition conditions (i.e. concentration, time, temperature and pH level) for the synthesis of Cadmium Sulphide (CdS) via Chemical Bath Deposition (CBD). I'm struggling to fabricate thin film CdS that is less than 100nm and is uniform and pinhole free. Any help would be greatly appreciated. Thanks