Effect of Laser Pulses on Characterization of Zincoxide Thin Film Prepared by PLD

Abstract

In this work, ZnO thin films have been deposition using pulsed laser deposition (PLD) method on glass and Si (111) substrates at different laser pulsed. Some properties of ZnO thin films were studied, the results of XRD explain Zinc oxidethin films with hexagonal wurtzite structure with thickness about 155and 200 nm. FTIR spectrum shows the existence of Zn-O bond that appear the texture of ZnOnanostructures. The root mean square of thin films were explained with the range 8.31-15.2 nm with particle size about 41.6-45.41and was only slightly dependent on number of laser pulses. Zinc oxide thin films showed transmittance of over 80% .The photovoltaic characteristics indicated an increase the short circuit current-open circuit voltage with illumination power as increased number of laser pulses resulted increasing of film thickness.

Effect of Picosecond Laser Irradiation on the Properties of Nanostructured Zinc Oxide Thin Films

“…But major peaks 31.66°, 34.24°, and 36.19° are slightly changed to the direction of 56.53° and 62.81°. A slight alteration in peaks is in agreement with the impact on the film direction [44] when the number of laser pulses increases. No additional peak in the X-ray diffraction (XRD) pattern was detected in connection with impurities.…”

“…However, by improving the quality of nanostructured ZnO films, it may be possible to achieve ultraviolet emission along with green emission. Moreover, it was reported in [39] that the observed strong band of typical ultraviolet emission energy, approximately 3.26 eV, in the nanostructured ZnO film originated from the direct recombination of charge carriers or excitons. It was also noted that the nanostructured ZnO exhibited slight variations in bandwidth and peak position after different irradiation times.…”

“…The laser irradiation technique was successfully used to effect and enhance the electrical [34,35] and optical properties [36][37][38], including conductivity, optical band gaps, and photoluminescence of high-quality ZnO films. The influence of the number of laser pulses on the photovoltaic properties of a ZnO thin film was observed [39]. A change in the nonlinear optical property of ZnO film using picosecond and nanosecond pulses was obtained [40].…”

The Effect of Sputtering Time and Substrate Type on the Structure of Zinc Nanoparticles Prepared by the DC Sputtering Technique

“…Although all the methods can obtain good NPs, they still need to develop the procedure, which can be easy in the industrial and commercial applications to obtain better production and more efficient yield [5][6][7][8]. Many techniques can be utilized for the deposition of Zn thin films on different substrates, such as the Hydrothermal Method [9], chemical vapor deposition [10], solgel method [11], pulsed laser deposition [12], radiofrequency sputtering, and DC sputtering techn ique. The DC sputtering technique is a simple and low cost to obtain metal and alloy thin films compared to other techniques [13].…”