Effect Of Annealing Temperatures And Durations On The Optical And Electrical Properties Of Electrodeposited CdMnTe
DOI:
https://doi.org/10.60787/jnamp.vol69no1.460Keywords:
CdMnTe, Electrodeposition, Annealing, Absorbance Band GapAbstract
The work explored the effects of varying annealing durations and temperatures on the optical and electrical properties of electrodeposited CdMnTe thin films. A 2-electrode system was used for the deposition and the thin films were grown at a cathodic potential of 1400 mV, pH of 2.0 ± 0.02 at 70 °C in an electrolytic bath prepared with CdSO4, MnSO4, and TeO2. The UV-visible spectrophotometer was used to study the optical properties of the thin films, and the photo-electro-chemical cell measurement was used to determine the electrical conductivity types of the thin films. The absorbance of the film increased f or annealing time of 4 and 6 minutes and for annealing temperatures of 50 and 70 °C. But for an annealing duration of 6 minutes and annealing temperature of 90 °C, the absorbance had lower values when compared to the as-deposited. Varying energy band gaps were obtained at different annealing parameters and values. Electrical conductivity type of n-, p- and intrinsic types were obtained.
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