Investigation of the effects of drying process on microstructural and luminescence properties of Al-doped ZnO thin films

被引:17
作者
Chelouche, A. [1 ]
Touam, T. [2 ,3 ]
Necib, K. [2 ,3 ]
Ouarez, L. [1 ]
Challali, F. [4 ]
Djouadi, D. [1 ]
机构
[1] Univ Bejaia, Fac Technol, Lab Genie Environm, Bejaia 06000, Algeria
[2] Univ Badji Mokhtar Annaba, Lab Semicond, BP 12, Annaba 23000, Algeria
[3] Univ Ferhat Abbas Setif 1, Unite Rech Opt & Photon, UROP CDTA, Setif 19000, Algeria
[4] Univ Paris 13, Sorbonne Paris Cite, CNRS, Lab Sci Proc & Mat LSPM UPR3407, 99 Jean Baptiste Clement Ave, F-93430 Villetaneuse, France
关键词
Drying process; AZO thin films; Electrical properties; Photoluminescence; PHOTOLUMINESCENCE PROPERTIES; PHYSICAL-PROPERTIES; OPTICAL-PROPERTIES; THICKNESS; EMISSION; PHOTOCONDUCTIVITY; DEPOSITION; NANORODS;
D O I
10.1016/j.jlumin.2019.116891
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Al-doped ZnO (AZO) thin films are deposited on glass substrates by sol-gel method and dip-coating technique using different number of coating layers (6, 9 and 12). The effects of two different drying processes on structural, morphological, electrical and optical properties of the synthesized thin films are investigated by means of X-ray diffraction (XRD), atomic force microscopy (AFM), Hall-effect measurements, UV-Vis-NIR spectrometry and photoluminescence (PL) spectroscopy. In the first drying process, temperature is gradually increased with an increment of 10 degrees/min from room temperature to 150 degrees C . While in the second drying process, temperature is maintained at 250 degrees C. XRD results show that all deposited films crystallized in a hexagonal wurtzite structure. It is observed that the second drying process yields better crystal quality and films orientation. The AFM images reveal that both surface morphology and roughness are dependent on the drying process. Low roughness of 1.33 nm is obtained for the sample dried with the second process. Hall-effect measurements demonstrate high carrier concentration of 4.58 x 10(21) cm(-3) and low resistivity of 0.003 Omega. cm for the films which were found to be dependent on the drying process and film thickness. According to UV-visible-NIR optical measurements, all films exhibit an average transmission ranging from 70 to 86% and the optical band gap is sensitive for both the drying process and film thickness. Room temperature photoluminescence spectra show the dependence of the AZO thin films emission on the drying process. Higher emissions are obtained for the films dried at 250 degrees C, however the emission decreases with increasing thickness and this for both drying processes. The obtained results confirm that crystal quality and PL properties of the AZO films can be enhanced by the type of drying method.
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页数:8
相关论文
共 57 条
[11]   Temperature-dependent shifts of three emission bands for ZnO nanoneedle arrays [J].
Cao, BQ ;
Cai, WP ;
Zeng, HB .
APPLIED PHYSICS LETTERS, 2006, 88 (16)
[12]   Na doping effects on the structural, conduction type and optical properties of sol-gel ZnO thin films [J].
Chelouche, A. ;
Touam, T. ;
Boudjouan, F. ;
Djouadi, D. ;
Mahiou, R. ;
Bouloufa, A. ;
Chadeyron, G. ;
Hadjoub, Z. .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2017, 28 (02) :1546-1554
[13]   Low cerium doping investigation on structural and photoluminescence properties of sol-gel ZnO thin films [J].
Chelouche, A. ;
Touam, T. ;
Tazerout, M. ;
Boudjouan, E. ;
Djouadi, D. ;
Doghmane, A. .
JOURNAL OF LUMINESCENCE, 2017, 181 :448-454
[14]   Defect emissions in ZnO nanostructures [J].
Djurisic, A. B. ;
Leung, Y. H. ;
Tam, K. H. ;
Hsu, Y. F. ;
Ding, L. ;
Ge, W. K. ;
Zhong, Y. C. ;
Wong, K. S. ;
Chan, W. K. ;
Tam, H. L. ;
Cheah, K. W. ;
Kwok, W. M. ;
Phillips, D. L. .
NANOTECHNOLOGY, 2007, 18 (09)
[15]   Enhanced UV-vis photoconductivity and photoluminescence by doping of samarium in ZnO nanostructures synthesized by solid state reaction method [J].
Farooqi, Mohd Mubashshir Hasan ;
Srivastava, Rajneesh K. .
OPTIK, 2016, 127 (08) :3991-3998
[16]   CONTROL OF PREFERRED ORIENTATION FOR ZNOX FILMS - CONTROL OF SELF-TEXTURE [J].
FUJIMURA, N ;
NISHIHARA, T ;
GOTO, S ;
XU, JF ;
ITO, T .
JOURNAL OF CRYSTAL GROWTH, 1993, 130 (1-2) :269-279
[17]  
Ganesh T, 2017, NANO HYBRIDS COMPOS, V17, P171, DOI 10.4028/www.scientific.net/NHC.17.171
[18]   Effect of annealing conditions on properties of sol-gel derived Al-doped ZnO thin films [J].
Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, China .
Chin. Phys. Lett., 2009, 8
[19]   Impact of nanostructured thin ZnO film in ultraviolet protection [J].
Ghamsari, Morteza Sasani ;
Alamdari, Sanaz ;
Han, Wooje ;
Park, Hyung-Ho .
INTERNATIONAL JOURNAL OF NANOMEDICINE, 2017, 12 :207-216
[20]   Tuning the visible photoluminescence in Al doped ZnO thin film and its application in label-free glucose detection [J].
Ghosh, Joydip ;
Ghosh, Ramesh ;
Giri, P. K. .
SENSORS AND ACTUATORS B-CHEMICAL, 2018, 254 :681-689