Structural and Electrical Properties of "Cadmium Sulfide- Cobalt" Compound and Using it as a Gas Sensor

Background: Both the cubic (zinc blend) and hexagonal (wurtzite) phases of cadmium sulphide are semiconductors due to presence a row four equally spaced Cd atoms surrounded by one S atom. crystal forms Cd-S have very similar nearest neighbor bond lengths. Material Methods: The sulfide compound was prepared at concentration 1 M dissolving percentage weight each cadmium(13.326g) sulfur (3.806g) in 100 ml distilled water. Cobalt 0.5M acetate (14.55g) Films CdS CdS:Co were using chemical method, which is thermal spraying technique, deposited solution mixture cobalt with on glass floor.
 Results: thickness films mm. surfaces studied measuring transmission electron microscopy. results showed that homogeneous crystalline granules spherical shape, addition led an increase particle size values. electrical properties represented voltaic- current studied, relationship between linear, this indicates behave as ohmic.
 Conclusion: continuous conductivity also calculated, gas sensitivity towards hydrogen had good sensitivity, adding decrease