Optical and electrical properties of lithium doped nickel oxide films deposited by spray pyrolysis onto alumina substrates

被引:31
作者
Garduno, I. A. [1 ]
Alonso, J. C. [1 ]
Bizarro, M. [1 ]
Ortega, R. [2 ]
Rodriguez-Fernandez, L. [3 ]
Ortiz, A. [1 ]
机构
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Coyoacan 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Ciencias, Coyoacan 04510, DF, Mexico
[3] Univ Nacl Autonoma Mexico, Inst Fis, Coyoacan 01000, DF, Mexico
关键词
Characterization; Spray pyrolysis; Metal oxides; Semiconducting materials; NIO THIN-FILMS; ELECTROCHROMIC PROPERTIES; METAL; CO3O4;
D O I
10.1016/j.jcrysgro.2010.08.020
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Non-doped and lithium doped nickel oxide crystalline films have been prepared onto quartz and crystalline alumina substrates at high substrate temperature (600 degrees C) by the pneumatic spray pyrolysis process using nickel and lithium acetates as source materials. The structure of all the deposited films was the crystalline cubic phase related to NiO, although this crystalline structure was a little bit stressed for the films with higher lithium concentration. The grain size had values between 60 and 70 nm, almost independently of doping concentration. The non-doped and lithium doped films have an energy band gap of the order of 3.6 eV. Hot point probe results show that all deposited films have a p-type semiconductor behavior. From current-voltage measurements it was observed that the electrical resistivity decreases as the lithium concentration increases, indicating that the doping action of lithium is carried out. The electrical resistivity changed from 10(6) Omega cm for the non-doped films up to 10(2) Omega cm for the films prepared with the highest doping concentration. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:3276 / 3281
页数:6
相关论文
共 25 条
[1]   Electrochromic materials and devices:: Brief survey and new data on optical absorption in tungsten oxide and nickel oxide films [J].
Avendaño, E ;
Berggren, L ;
Niklasson, GA ;
Granqvist, CG ;
Azens, A .
THIN SOLID FILMS, 2006, 496 (01) :30-36
[2]  
BARBOUR JC, 1995, HDB MODERN ION BEAM
[3]   Comparison of the physico-chemical properties of NiO thin films deposited by chemical bath deposition and by spray pyrolysis [J].
Berkat, L ;
Cattin, L ;
Reguig, A ;
Regragui, M ;
Bernède, JC .
MATERIALS CHEMISTRY AND PHYSICS, 2005, 89 (01) :11-20
[4]   Nickel β-diketonate complexes as precursors for the photochemical deposition of nickel oxide thin films [J].
Buono-Core, GE ;
Tejos, M ;
Alveal, G ;
Hill, RH .
JOURNAL OF MATERIALS SCIENCE, 2000, 35 (19) :4873-4877
[5]   Gas sensing properties of nanocrystalline NiO and Co3O4 in porous silica sol-gel films [J].
Cantalini, C ;
Post, M ;
Buso, D ;
Guglielmi, A ;
Martucci, A .
SENSORS AND ACTUATORS B-CHEMICAL, 2005, 108 (1-2) :184-192
[6]  
Chen H.L., 2005, Thin Solid Films, V514, P361
[7]   Spray pyrolytic synthesis of large area NiOx thin films from aqueous nickel acetate solutions [J].
Desai, J. D. ;
Min, Sun-Ki ;
Jung, Kwang-Deog ;
Joo, Oh-Shim .
APPLIED SURFACE SCIENCE, 2006, 253 (04) :1781-1786
[8]   NiO thin-film formaldehyde gas sensor [J].
Dirksen, JA ;
Duval, K ;
Ring, TA .
SENSORS AND ACTUATORS B-CHEMICAL, 2001, 80 (02) :106-115
[9]   Metal and metal oxide nanoparticles in chemiresistors: Does the nanoscale matter? [J].
Franke, ME ;
Koplin, TJ ;
Simon, U .
SMALL, 2006, 2 (01) :36-50
[10]   Sensing characteristics of NiO thin films as NO2 gas sensor [J].
Hotovy, I ;
Rehacek, V ;
Siciliano, P ;
Capone, S ;
Spiess, L .
THIN SOLID FILMS, 2002, 418 (01) :9-15