The Influence of Al Doping on the Optical Characteristics of ZnO Nanopowders Obtained by the Low-Cost Sol-Gel Method

被引:18
|
作者
Mishra, Pooja Nag [1 ]
Mishra, Pankaj Kumar [1 ]
Pathak, Dinesh [2 ]
机构
[1] Sri Sai Univ, Dept Phys, Palampur 176081, India
[2] Univ West Indies, Dept Phys, St Augustine 32080, Trinidad Tobago
来源
CHEMISTRY-SWITZERLAND | 2022年 / 4卷 / 04期
关键词
zinc oxide; nanopowder; aluminum doped zinc oxide; sol-gel; photoluminescence; UV-visible spectroscopy; ELECTRICAL-PROPERTIES; THIN-FILMS; PHOTOCATALYTIC ACTIVITY; GROWTH; FABRICATION; PHOTOLUMINESCENCE; TEMPERATURE; NANOWIRES; NANORODS;
D O I
10.3390/chemistry4040077
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this work, the influence of Al (0, 2, 4, and 6 wt.%) on the optical properties of ZnO has been briefly investigated and described. The undoped and doped samples were characterized using a UV-visible spectrophotometer and Photoluminescence (PL). The X-ray diffraction (XRD) data in our preceding study is also indexed, and materials are said to have a wurtzite-structured hexagonal phase and exhibit no impurity phases. The average crystallite sizes of the pure ZnO were found to increase, i.e., from 14.19 nm to 34.17 nm with an increase in temperature, and in the case of Al-doped ZnO, at a constant temperature, from 35.05 nm to 18.89 nm, respectively. The average crystallite size of AZO (Al-doped ZnO) decreases with increasing Al content. With the increasing temperature, increases in crystallinity and size of the pure ZnO have been observed. In the case of Al doping, with an increase in the concentration of doping the crystallite size is seen to be decreased, without any change in the temperature. Al doping improves the formation of the well-ordered crystalline structure of ZnO up to a certain limit of doping. The absorbance spectra were used to determine the optical band gap of the samples. The optical photoluminescence (PL) spectra of both ZnO and AZO nanopowder are obviously influenced by the increasing temperature and Al doping content, respectively. Different optical properties of ZnO and AZO were observed for different contents of Al in ZnO. The band gap of AZO nanopowder with different concentrations has been seen to be lower than that of undoped ZnO (3.10 eV), suggesting broad application potential. Also, the optical properties of ZnO were tailored by Al doping in the near visible region, suggesting various potential uses.
引用
收藏
页码:1136 / 1146
页数:11
相关论文
共 50 条
  • [1] Influence of Yttrium on optical, structural and photoluminescence properties of ZnO nanopowders by sol-gel method
    Anandan, S.
    Muthukumaran, S.
    OPTICAL MATERIALS, 2013, 35 (12) : 2241 - 2249
  • [2] Effect of Ga doping on the structural, optical, and electrical properties of ZnO nanopowders elaborated by sol-gel method
    Latif, Aya
    Arab, Louiza
    Amri, Abdelhak
    Arab, Hadda
    Sengouga, Nouraddine
    Tibermacine, Toufik
    MATERIALS RESEARCH BULLETIN, 2024, 178
  • [3] Al Doping Influence on the Properties of Sol-Gel Synthetized ZnO Nanoparticles
    Al-Shehri, Samar
    Alshehri, Salma
    Ali, Haithem Elhosni
    Alassafi, Jamaan Eidhah
    Alzahrani, Ahmed Obaid M.
    Aida, Mohammed Salah
    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2023, 220 (15):
  • [4] Effect of Cadmium on Structure and Optical Properties of ZnO Nanopowders by Sol-Gel Method
    Kumar, T. Mohan
    Shekharam, T.
    Nagabhushanam, M.
    MATERIALS TODAY-PROCEEDINGS, 2016, 3 (10) : 3621 - 3625
  • [5] Properties of ZnO:Al thin films, obtained by the sol-gel method
    Altamirano-Juarez, DC
    Castanedo-Perez, R
    Jimenez-Sandoval, O
    Jimenez-Sandoval, S
    Marquez-Marin, J
    Torres-Delgado, G
    Maldonado-Alvarez, A
    MODERN PHYSICS LETTERS B, 2001, 15 (17-19): : 730 - 732
  • [6] Optical, electrical and structural characterization of ZnO:Al thin films prepared by a low cost sol-gel method
    Vishwas, M.
    Rao, K. Narasimha
    Phani, A. R.
    Gowda, K. V. Arjuna
    Chakradhar, R. P. S.
    SOLID STATE COMMUNICATIONS, 2012, 152 (04) : 324 - 327
  • [7] Influence of starch used in the sol-gel synthesis of ZnO nanopowders
    Willians Lopes de Almeida
    Lucas Colombo Freisleben
    Brenda Camargo Brambilla
    Victória Goulart Isoppo
    Fabiano Severo Rodembusch
    Vânia Caldas de Sousa
    Journal of Nanoparticle Research, 2023, 25
  • [8] Influence of Cr Doping on the Microstructural, Optical and Photocatalytic Properties of ZnO Synthesized by Sol-Gel Method
    Ansari, S. A.
    Alam, Fahad
    Khan, A.
    Khan, Wasi
    Chaman, M.
    Muneer, M.
    Naqvi, A. H.
    CURRENT NANOSCIENCE, 2012, 8 (04) : 581 - 586
  • [9] Hydroxyapatite nanopowders obtained by sol-gel method, synthesis and properties
    Sava, B. A.
    Tardei, C.
    Simonescu, C. M.
    Boroica, L.
    Melinescu, A.
    OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, 2015, 9 (11-12): : 1415 - 1424
  • [10] Influence of starch used in the sol-gel synthesis of ZnO nanopowders
    de Almeida, Willians Lopes
    Freisleben, Lucas Colombo
    Brambilla, Brenda Camargo
    Isoppo, Victoria Goulart
    Rodembusch, Fabiano Severo
    de Sousa, Vania Caldas
    JOURNAL OF NANOPARTICLE RESEARCH, 2023, 25 (04)