Power factor, pure resistance

Unity power factor A power factor of 1.0, which means that the load is—in effect—a pure resistance, with ac voltage and current completely in phase. 

A specific study of the optical and electrical properties of these Pbi Hg S films was carried ont with an emphasis on the difference between the a- and p-phase alloys deposited at 30°C as described earlier [27], A linear increase in bandgap (up to 0.9 eV for j = 0.33) for the a-phase alloy and a linear decrease of the P-phase down to ca. 0.18 eV forx = 0.33 was measured. The resistivities of the alloys (x = 0.14) were higher than for the pure PbS (ca. 10 H-cm) by a factor of ca. 5 (P-phase) and of 10 (a-phase). Both the photoconductivity response and the thermoelectric power of the alloys were greater than for the pure PbS. The electrical properties were believed to be controlled mainly by intergrain barriers. 

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