The Influence of Aluminum Doping on Structural Films)Thin 3O2and Optical Properties of (Bi

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Bushra . K . Hasson
Nassr . I . Najm

Abstract

      In this research, the structural and optical properties were studied for Bi2O3 and Bi2O3: Al  thin  films  with   different  doping   ratios  ( 1, 2, 3 ) %  ,  which  were  prepared  by  thermal evaporation  technique under  vacuum , with  thickness  ( 450 ± 20 ) nm  deposited  on  glass substrates  at  room  temperature ( 300 ) K , Structural   measurements by ( XRD)  techniques demonstrated   that  all   samples  prepared   have  polycrystalline  structure   with  tetragonal structure and  a preferred orientation  [ 201 ]   the   optical  measurement shows that  all films have  a  direct  energy  gap  ,  and  in general  decrease   with   the   increase  of  doping  ratio except  ratio  ( 3% Al )  .  The optical constant such as absorption coefficient , extinction coefficient , refractive index real and imaginary parts  of the  dielectric constant  and optical conductivity  were calculated  before  and  after  doping  with  the  range  of  wave  lengths ( 300 - 1100 ) nm . 

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How to Cite
[1]
Hasson, B. . K. . and Najm, N. . I. . 2017. The Influence of Aluminum Doping on Structural Films)Thin 3O2and Optical Properties of (Bi. Ibn AL-Haitham Journal For Pure and Applied Sciences. 29, 2 (Mar. 2017), 387–396.
Section
Physics

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