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▲ [10a-N406-2] Effect of substrate temperature on thermoelectric performance of CdO thin films
Keywords:Thin films, Cadmium Oxide, Seebeck coefficient
In the present work, we studied the effect of substrate temperature on TE properties of cadmium oxide (CdO) thin films.Nanostructured CdO films with granular morphology were prepared via chemical spray pyrolysis technique with different substrate temperatures from 200 oC to 400 oC. The prepared films have pollycrystalliune nature with cubic crystal structure.According to the room temperature Hall measurement, the electrical resistivity is decreased with increasing deposition temperature. The temperature dependent Seebeck coefficient (S) value increases and the largest value is reached by the film deposited at 300 oC with S = -75 microW/K.The maximum calculated power factor (PF) is 1.2 (mW/mK2) for the film deposited at 300 oC. The PF, quite large for an oxide thin films, suggests that spray deposited CdO film can be used to fabricate good oxide materials based thermoelectric devices.