Optical and electrical properties of Bi doped ZnO thin films deposited by ultrasonic spray pyrolysis

被引:54
作者
Chouikh, F. [1 ]
Beggah, Y. [1 ]
Aida, M. S. [2 ]
机构
[1] Univ Jijel, Fac Sci & Technol, Lab Mat Study LEM, Jijel 18000, Algeria
[2] Univ Mentouri Constantine, Dept Phys, Lab Thin Films & Interface, Fac Sci, Constantine 25000, Algeria
关键词
PULSED-LASER DEPOSITION; ZINC-OXIDE FILMS; CHEMICAL SPRAY; AL FILMS; PHYSICAL-PROPERTIES; ROOM-TEMPERATURE; 100; ORIENTATION; CONDUCTING ZNO; TRANSPARENT; INDIUM;
D O I
10.1007/s10854-010-0167-y
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Undoped Zinc oxide (ZnO) and Bismuth doped zinc oxide (ZBO) thin films have been prepared by a simple and inexpensive technique namely ultrasonic spray pyrolysis. Films were prepared from an aqueous solution of zinc acetate on glass and silicon substrates at temperature of 350 A degrees C. Doping is achieved by adding a small amount of Bi(NO3), H2O salt to the starting solution which is mixed thoroughly prior to spraying. The goal of this work is to study the influence of doping (Bi) with different concentrations on the structural, optical, and electrical properties of Bi doped ZnO films. Structural analysis shows that the ZBO layers are polycrystalline with a wurtzite structure and (100) preferential orientation which disappears gradually with increasing doping concentration. The optical transmittance average of all films, regardless the doping concentration, was higher than 80% in the visible range. The obtained films gaps values vary in the range from 3.19 to 3.24 eV and the Urbach energy lies in the range 11 to 530 meV. The measured conductivity, in dark and at room temperature, varies with four order of decade level (from 10(-3) to 10(+1) (a"broken vertical bar cm)(-1))with increasing Bi doping level.
引用
收藏
页码:499 / 505
页数:7
相关论文
共 47 条
[11]   DOPANT INDUCED MODIFICATIONS IN THE PHYSICAL-PROPERTIES OF SPRAYED ZNOIN FILMS [J].
GOYAL, DJ ;
AGASHE, C ;
TAKWALE, MG ;
BHIDE, VG ;
MAHAMUNI, S ;
KULKARNI, SK .
JOURNAL OF MATERIALS RESEARCH, 1993, 8 (05) :1052-1056
[12]   Preparation and optical properties of Bi doped ZnO thin films with (100) orientation by rf magnetron sputtering [J].
Jiang, Minhong ;
Liu, Xinyu .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2009, 20 (10) :972-976
[13]  
Jiwei X., 2000, CERAM LNT, V26, P883
[14]   Studies on the structural, electrical and optical properties of A1-doped ZnO thin films prepared by chemical spray deposition [J].
Joseph, Benny ;
Manoj, P. K. ;
Vaidyan, V. K. .
CERAMICS INTERNATIONAL, 2006, 32 (05) :487-493
[15]   Preparation of ZnO-doped Al films by spray pyrolysis technique [J].
Kaid, M. A. ;
Ashour, A. .
APPLIED SURFACE SCIENCE, 2007, 253 (06) :3029-3033
[16]   Zinc oxide thin films by the spray pyrolysis method [J].
Krunks, M ;
Mellikov, E .
THIN SOLID FILMS, 1995, 270 (1-2) :33-36
[17]   Doping of spray-pyrolyzed ZnO thin films through direct diffusion of indium: Structural optical and electrical studies [J].
Kumar, PMR ;
Kartha, CS ;
Vijayakumar, KP .
JOURNAL OF APPLIED PHYSICS, 2005, 98 (02)
[18]   URBACH RULE [J].
KURIK, MV .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1971, 8 (01) :9-&
[19]  
KURIK MV, 1971, PHYS STATUS SOLIDI A, P8
[20]   Cathodoluminescent and nonlinear optical properties of undoped and erbium doped nanostructured ZnO films deposited by spray pyrolysis [J].
Lamrani, M. Alaoui ;
Addou, M. ;
Sofiani, Z. ;
Sahraoui, B. ;
Ebothe, J. ;
El Hichou, A. ;
Fellahi, N. ;
Bernede, J. C. ;
Dounia, R. .
OPTICS COMMUNICATIONS, 2007, 277 (01) :196-201