Effect of air annealing on the optical electrical and structural properties of ln2S3 films

摘要

The effect of the annealing temperature T_a on the optical,electrical and structural properties of the ln2S3 films obtained by the spray pyrolysis method at 350°C substrate temperature was studied.All the ln2S3 films annealed in the range from 100 to 400°C are polycrystalline with(220)preferential orientation.The resistivity decreases as T_a increases until it reaches a value of 25 Ohm-cm for T_a=400°C.The grain size also increases when T_a increases as observed in data calculated from X-ray measurements.XRD data indicates that samples show microstructural perfection improvement as a function of annealing temperature.