Investigation and Prepared of Cu2ZnSnS4 Compound Films as a Gas Sensor by Pulse Laser Deposition

Volume 18 No 1 (2020)

Ali J. Khalaf, Nahida B. Hasan

DOI: 10.14704/nq.2020.18.1.NQ20116

Abstract

The prepared samples of thin-film by laser ablation method were achieved. Powders of (CZTS) and then compressing by approximately 3 tons in Pellets form. The samples were vaporized using the Nd-YAG laser with different laser energies (400mJ, 500mJ, 600mJ, 700mJ, 800mJ) and number of pulses (300) pulse, frequency (6Hz) and wavelength (1064) nm obtained the plasma aura in10-5mbar pressure. Results are shown using gas sensor system study the sensitivity of Cu2ZnSnS4 compound films prepared, that all samples are working, and the best operating temperature ranges from 150-250 Co, and the sensitivity decreases at temperatures above 200 Co, The CZTS are good sensors for the sensor design of gas (NO2). Sensitivity reactions of films with gas (NO2) decrease with increasing of temperature and laser energy.

Keywords

Gas Sensor, Thin Film, Sensitivity, CZTS, Compound, Response Time, Recovery Time, Grain Size, Laser Ablation and Laser Energy.

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