抄録
The electrical resistance of a single crystal of cadmium sulfide was measured at pressures up to 40kbar and at temperatures up to 700°C in a cubic compact anvil high pressure apparatus.
The electrical conductivity of CdS of either the atmospheric wurtzite phase or the high-pressure rock salt phase is semiconductive. In the high-resistivity samples used in the present experiment the electrical resistance increased with pressure in either phases, the wurtzite or the rock salt. From the measurements of electrical resistance as a function of temperature, it is found that a band gap of CdS of the wurtzite phase is about 2.5eV. For the CdS of the rock salt phase a band gap of about 0.8eV is obtained.
