J4 ›› 2012, Vol. 29 ›› Issue (2): 230-235.

• Semiconductor Opto-electronics • Previous Articles     Next Articles

Electronic Structure and Optical Properties of Sb doped on ZnO

ZHANG Hao1, WU Yu-xi1, Gu Shu-Lin2,Qu Li-Cheng1,Li Teng3,Han Long1   

  1. 1 Department of Physics, College of Sciences, China University of Mining and Technology, Xuzhou 221116, China; 
    2 National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China;
    3 Department of Aviation Ammunition, Xuzhou Air Force College,Xuzhou 221000, China
  • Received:2011-04-21 Revised:2011-05-23 Published:2012-03-28 Online:2012-02-28

Abstract:

The electronic structure and optical properties of doped Sb in ZnO, together with the corresponding results of pure ZnO for comparison, had been systematically studied from the first principles based on density functional theory. The calculated results show that for ZnO doped with Sb, the lattice constant, bond length, primitive cell volume and total energy are all larger than those of pure ZnO. For the doping case, the Fermi level becomes larger than the conduction band minimum (CBM),the system grows metallic and the band gap becomes wider. For the optical properties, a new absorption peak appear near the main peak, which is mainly attributed to the transition of orbital electrons of Zn-4s and Sb-5p. Finally, it is also pointed out that for the dielectric function, the peak values of imaginary part and the ε(0) value of real part become larger.

Key words: materials, ZnO, first-principles, optical properties, doping

CLC Number: