Investigation of the physical properties on an n- type GaP single crystal semiconductor compound is given. The magneto-optical properties, magneto photoconductivity, Hall effect as well as Seebeck and Nernst effects are measured for the same sample. A constructed basic experimental set-up for conducting these measurements is shown. An optical cryostat which is capable to control the sample temperature in the range of (200-340 K) is shown. The cryostat is also suitable for measuring electrical as well as thermal measurements. Results of energy gap is obtained from both optical absorption...

Binary compound semiconductor of (CdS) and copper doped (CdS: Cu) thin films have been deposited onto glass substrates at substrate temperature (T =653 K) by spray technique. Different doped films were prepared using different concentrations of Cu (0.1-2%). The effect of copper doping on some physical properties of the prepared films of thickness (0.9 0.05 um) was investigated. The structural, optical and electrical properties of the films have been studied using X-ray diffraction, optical transmission spectra and electrical conductivity respectively. These properties were found to be...