NO2 gas sensing properties of chemically grown Al doped ZnO nanorods

被引：25
|
作者：
Patil, V. L. [1 ]
Dalavi, D. S. [2 ]
Dhavale, S. B. [1 ]
Tarwal, N. L. [1 ]
Vanalakar, S. A. [3 ]
Kalekar, A. S. [4 ]
Kim, J. H. [5 ]
Patil, P. S. [1 ]
机构：
[1] Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, India
[2] Krishna Mahavidyalaya, Dept Phys, Rethare Bk, India
[3] Sci & Educ Coll, Dept Phys, Karmaveer Hire Arts Commerce Sci & Educ Coll, Kolhapur 416209, India
[4] Inst Chem Technol, Dept Phys, Mumbai 400019, India
[5] Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 500757, South Korea
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2022年 / 340卷
关键词：
AZO nanorods; Oxygen Vacancies; Roughness; NO2 gas sensor; Sensitivity; OXIDE THIN-FILMS; NO2 GAS SENSOR; ZINC-OXIDE; PERFORMANCE; ENHANCEMENT; ROUTE; PHOTOLUMINESCENCE; NANOPARTICLES; TEMPERATURE; FABRICATION;
D O I：
10.1016/j.sna.2022.113546
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：
This report highlights nanocrystalline aluminium doped ZnO (Al doped ZnO: AZO) samples deposited on seeded glass substrates using cost-effective reflux method. The doping concentration of 'Al' ions varied from 1 to 3 vol percentage (vol%). The deposited AZO samples exhibit wurtzite hexagonal crystal structure and the surface morphological analysis study confirms the formation of nanorods for undoped ZnO and reduction in diameter with the formation of the fine tips for AZO samples. The photoluminescence (PL) study confirms oxygen vacancies and defects in the AZO samples. Moreover, the AZO samples exhibit excellent gas sensing performance towards NO2 gas at an operating temperature of 175 degrees C. The gas sensitivity of 5 ppm NO2 gas was 85% at 175 degrees C. This work is promising for the practical approach for the low detection limit at low operating temperature in the field of gas sensor technology.
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页数：13
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