Effect of Sn Doping on the Electrical Properties of as Prepared and annealed ZnO thin films Prepared by Reactive Evaporation
Munji, M. K.
Nyaga, P. K.
Musembi, R. J.
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Layers of transparent and conductive Sn-doped Zinc oxide (lnO) have been prepared by reacti. e evaporation on glass substrates. The deposition has been done at various doping levels ranging from J % to 8%. Annealing of samples was done using Rapid Thermal Processing (RTP). In this work, Nabertherrn Programmable Furnace system was used and annealing done at 300°C for one hour. Electrical characterization has been done for both prepared and annealed samples using four point probe configuration at room temperature (25°C) to obtain the sheet resistance. The sheet resistance for tin doped zinc oxide reduced with increase in tin doping to a minimum of J J .920cm at 4% tin doping for as prepared samples and I I .890cl11 for annealed samples.