Résumé:
In this work, we have prepared the Nano powder and thin films of ZnO pure and doped Al with ( 5%,7%) by sol-gel technique and have annealed at (450°C ,750°C). then we analyzed the specimens by X rays diffraction and UV-visible and IR.
the structural characteristics of the specimens analyzed by X rays diffraction that confirm the formation of hexagonal structure of ZnO of the type (wûrtzite) with preferential direction for (101).
the optics characteristics of the specimens have analyzed by the UV-visible that have helped on calculation of gap energy by using second derived and Tauc method where we have found the energy value is 4.2 ev.
the optics characteristics of the specimens have analyzed by the (FTIR)that there is appearance for absorption peaks that have attributed for existence to the new phase that can not be observed through the X rays who be phase spinel.
