Evaporated metal contacts to layers of deposited Sb 2S 3 1 μm thick have been investigated. It has been found that Ni, Au and Pt make blocking contacts while contacts of In, Ga, Al and Bi are ohmic. Cu, Ag and Pd contacts show poor stability and have a very low breakdown voltage; they are not considered to be suitable contact materials. If Al is used care must be taken to avoid the formation of a layer of Al 2O 3 between the Al and the Sb 2S 3 which will result in a blocking contact. Au makes a very reproducible and reliable contact capable of withstanding fields up to about 6 x 10 5 V/ cm. The type of contact made by any of these metals depends on the work function of the metal. The low work function metals In and Ga make the best ohmic contacts. The high work function metals Pt and Au make good blocking contacts. The results can be explained in terms of the conventional theory of contacts if the Sb 2S 3 layer is assumed to be n-type with a low density of surface states. On this basis it is expected that the work function of Sb 2S 3 lies in the range 4.7–4.9 eV.