ScienceAsia 9 (1983): 257-264 |doi: 10.2306/scienceasia1513-1874.1983.09.257

INVESTIGATION OF POLYCRYSTALLINE CADMIUM SULPHIDE PHOTOCELLS

T.TUNKASIRI, J.TONTRAKOON, N.SIRlRATWATANAKUL and S.THONGTEM.

ABSTRACT: Cadmium sulphide photoconductive cells were prepared on clean glass slides by slow precipitation techniques. The doped solution was prepared using various concentrations of cadmium sulphide (CdS), cadmium chloride (CdCl₂).and cupric chloride (CuCl₂). Amounts of CdS and CuCl₂ were fixed at 20 and 0.02 millimoles respectively. but that of CdCl₂ varied from 3 ta 7 millimoles. Gold leaves were employed as contacts. Annealing was carried out at 600 ^oC with gradual raising of temperature. The current-voltage characteristic curves of the cells were investigated and compared with those of undoped. evaporated. film of CdS. and laboratary phototube and light dependent resistors (LDR). The cells produced with the CdCl₂ concentrations of 3 and 5 millimoles showed good sensitivity and the currents were of the same order as those produced in the phototube and LDR.

Download PDF

Department of Physics. Faculty of Science. Chiang Mai University. Chiang Mai. Thailand

Received 18 July 1983