Thin copper sulphide was deposited from a chemical bath onto clear glass slides using CBD (Chemical bath deposition). The bath contents comprise an aqueous solution composed of Copper acetate, Ammonia, Sodium citrate, Thiourea and distilled water at room temperature. Post deposition annealing was done for all slides except one at temperatures from 100 º C to 300 º C for duration of one hour. Optical characterization of the thin films showed transmittance of within 14%-86% in the wavelength of

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... 0 nm-1,000 nm and allowed band gap of the range of 1.56 eV-2.00 eV. It also showed low reflectance of below 21%. The result showed that it has a good property which finds application in optoelectronics.