Impact of oxygen vacancies on enhanced NO2 gas sensing performance of lithium doped Co:ZnO thin films

被引：0
|
作者：
Jasmi, K. K. [1 ]
Johny, T. Anto [1 ]
Siril, V. S. [2 ]
Madhusoodanan, K. N. [2 ]
机构：
[1] Univ Calicut, St Thomas Coll Autonomous, Dept Phys, Trichur 680001, India
[2] Cochin Univ Sci & Technol, Dept Instrumentat, Cochin 682022, India
来源：
PHYSICA SCRIPTA | 2024年 / 99卷 / 06期
关键词：
electrical conductivity; Co-Li co-doping; NO2 gas sensing; oxygen vacancy; stability; selectivity; MAGNETIC SEMICONDUCTOR; OPTICAL-PROPERTIES; ZNO NANOPARTICLES; CO; SELECTIVITY;
D O I：
10.1088/1402-4896/ad4789
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This article explored the influence of lithium on cobalt-doped ZnO thin films fabricated via the sol-gel spin coating technique for NO2 gas sensing applications. The abundance of oxygen vacancies in ZnO can be proven by scanning electron microscopy, four-probe Hall measurements, photoluminescence spectroscopy, UV-visible spectroscopy, and x-ray photoelectron spectroscopy. The presence of lithium plays a crucial role in generating more oxygen vacancies in Co-doped ZnO was discussed. Among the fabricated samples, (Li-Co) co-doped ZnO exhibits better sensitivity (2940.17%), selectivity, repeatability, and stability (after 90 days) toward 75 ppm NO2 gas.
引用
收藏
页数：12
相关论文
共 50 条
  • [21] Study on NO2 gas sensing characteristics of In-doped ZnO thin films prepared by RF magnetron sputtering
    Fang, Liang
    Peng, Liping
    Yang, Xiaofei
    Huang, Qiuliu
    Zhou, Ke
    Wu, Fang
    Liu, Gaobin
    Ma, Yong
    Chongqing Daxue Xuebao/Journal of Chongqing University, 2009, 32 (09): : 1002 - 1005
  • [22] Gas sensing performance of sprayed NiO thin films toward NO2 gas
    Gomaa, M. M.
    Sayed, M. H.
    Patil, V. L.
    Boshta, M.
    Patil, P. S.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 885
  • [23] Synergistic effects of UV activation and surface oxygen vacancies on the room-temperature NO2 gas sensing performance of ZnO nanowires
    Wang, Jing
    Shen, Yongqiang
    Li, Xian
    Xia, Yi
    Yang, Cheng
    SENSORS AND ACTUATORS B-CHEMICAL, 2019, 298
  • [24] NO2 gas-sensing properties of Ga-doped ZnO thin film
    Matsushima, Shigenori
    Ikeda, Daisuke
    Kobayashi, Kenkichiro
    Okada, Genji
    Sensors and Actuators, B: Chemical, 1993, B14 (1 -3 pt 2) : 621 - 622
  • [25] OXYGEN GAS SENSING CHARACTERISTICS AT AMBIENT PRESSURE OF UNDOPED AND LITHIUM-DOPED ZNO-SPUTTERED THIN-FILMS
    SBERVEGLIERI, G
    NELLI, P
    GROPPELLI, S
    QUARANTA, F
    VALENTINI, A
    VASANELLI, L
    MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1990, 7 (1-2): : 63 - 68
  • [26] Generation of oxygen vacancies in ZnO nanorods/films and their effects on gas sensing properties
    Kim, Wooseok
    Choi, Mingi
    Yong, Kijung
    SENSORS AND ACTUATORS B-CHEMICAL, 2015, 209 : 989 - 996
  • [27] Influence of defect chemistry on NO2 gas sensing of Li-ZnO thin films
    K K Jasmi
    T Anto Johny
    V S Siril
    V Kumar
    K N Madhusoodanan
    Bulletin of Materials Science, 45
  • [28] Influence of defect chemistry on NO2 gas sensing of Li-ZnO thin films
    Jasmi, K. K.
    Johny, T. Anto
    Siril, V. S.
    Kumar, V
    Madhusoodanan, K. N.
    BULLETIN OF MATERIALS SCIENCE, 2022, 45 (04)
  • [29] A comparative study on the NO2 gas sensing properties of ZnO thin films, nanowires and nanorods
    Ozturk, S.
    Kilinc, N.
    Tasaltin, N.
    Ozturk, Z. Z.
    THIN SOLID FILMS, 2011, 520 (03) : 932 - 938
  • [30] Great influence of the oxygen vacancies on the ferromagnetism in the Co-doped ZnO films
    Huang, Bao
    Zhu, Deliang
    Ma, Xiaocui
    APPLIED SURFACE SCIENCE, 2007, 253 (16) : 6892 - 6895
12345