Study of Variation of Band Gap Energy and Thickness with Temperature of II-VI Solid-Solution of Copper Selenide Thin Films by Spray Pyrolysis

CdSe thin films have grown by spray pyrolysis method at different temperature. It shows that thickness of the films increases and band gap decreases. When the temperature increases uptooptimised temperature 3500C. After increase the temperature thickness decreases and band gap increases. It shows the direct allowed transition.