ZnO thin films deposition by spray pyrolysis: Influence of precursor solution properties

Lehraki, N.; Aida, M.S.; Abed, S.; Attaf, N.; Attaf, A.; Poulain, Marcel

doi:10.1016/j.cap.2012.03.012

Cited by 154 publications

(63 citation statements)

References 40 publications

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“…These properties makes ZnO attractive in places where high hygiene it´s necessary [5]. Therefore, several methods were used to prepare ZnO nanoparticles such as: radio frequency (RF) sputtering process [6], CVD methods [7], pulsed laser deposition [8], spray pyrolisis [9], atomic layer deposition [10], chemical bath deposition [11] or electrodeposition [12]. In sol-gel technique, needs expensive precursors such as alkoxide or organometallic compounds.…”

Section: Imentioning

confidence: 99%

Synthesis and Characterization of ZnO Nanoparticles using Effective of Co Doped

Anand¹

2017

IJRASET

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I.INTRODUCTION Zinc oxide having interesting physical and chemical properties, together with its cost-effective manufacturing process and abundance in nature, is a promising material for different applications, which has been intensively studied in past decades. The interest in ZnO is fueled and motivated by its excellent properties such as wide direct band gap (Eg ~3.36 eV at 300 K), high exciton binding energy (60 meV), good piezoelectric characteristics, chemical stability, and biocompatibility which make it a good candidate for diverse application including light-emitting diodes, laser diodes, solar cells, optoelectronic switches, surface acoustic wave devices, hydrogen-storage devices, transparent electrodes, transparent thin-film transistors and sensors [1][2][3][4]. These properties makes ZnO attractive in places where high hygiene it´s necessary [5]. Therefore, several methods were used to prepare ZnO nanoparticles such as: radio frequency (RF) sputtering process [6], CVD methods [7], pulsed laser deposition [8], spray pyrolisis [9], atomic layer deposition [10], chemical bath deposition [11] or electrodeposition [12]. In sol-gel technique, needs expensive precursors such as alkoxide or organometallic compounds. Forced hydrolysis and hydrothermal synthesis require higher temperatures, pressures and longer reaction time. Microemulsion technique is an important method to preparing large sized monodispersed ZnO nanocrystallites. Among all of these methods, the precipitation technique is an easy way to synthesis the nanoparticles, because of its simple procedure, cheap precursors and easy scalable. In the present work, pure and Co-doped ZnO nanoparticles were synthesized using precipitation method. The crystalline phase and structure of pure and Co doped ZnO nanoparticles are identified using XRD. The morphology and size of the samples were characterized using Scanning Electron Microscopy (SEM). The optical properties of the nanoparticles were analyzed using, UVVisible, photoluminescence spectroscopy.

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Section: Imentioning

confidence: 99%

Synthesis and Characterization of ZnO Nanoparticles using Effective of Co Doped

Anand¹

2017

IJRASET

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“…One can deposit almost all the oxide semiconductors by adjusting the spray deposition parameters such as precursor properties 9 , substrate temperature 10 , flow rate…”

Section: Introductionmentioning

confidence: 99%

Spray Deposited Nanostructured CuO Thin Films: Influence of Substrate Temperature and Annealing Process

Asl

Rozati

2018

Mat. Res.

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In this study, CuO thin films were deposited on glass substrates at a wide range of temperatures from 450ºC to 550ºC with steps of 25ºC by chemical spray pyrolysis technique. Aiming to investigate the effect of annealing process, one of the resulting films was annealed at 450ºC for 3 hours under ambient air. Based on X-ray diffraction, all the resulting films are monoclinic with two prominent peaks at ~36º and ~39º. The crystallite size of the CuO film deposited at 450ºC was found to be the largest in comparison with the others. As the substrate temperature increased, a gradual change was observed for the CuO thin film surface morphology and in the case of annealed film, the grains and their boundaries became indistinguishable. The resistivity of the films was reduced by virtue of increasing the substrate temperature and also, both the mobility and carrier concentration of the annealed film were improved drastically after annealing. As expected, the CuO thin films absorption was considerable in the visible region and gradually declined after 800nm. The estimated band gap value of the CuO film deposited at 450ºC were fairly close to the optimum band gap for solar applications.

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“…Nowadays, ZnO thin films have been under extensive investigation for reliable optoelectronic device manufacturing. ZnO thin films have been grown by various methods, such as rf sputtering [5], PLD [6], spray pyrolysis [7], * E-mail: mufazzalmunirah@gmail.com sol-gel [8]. Sol-gel method is found to be the most suitable for the growth of ZnO thin films, as it allows fabrication of thin films with improved structural, optical and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown

Munirah

Khan

Aziz

et al. 2017

Materials Science-Poland

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ZnO thin films were fabricated on quartz substrates at different zinc acetate molar concentrations using sol-gel spin coating method. The samples were characterized using X-ray diffraction, field emission scanning electron microscope, UV-Vis spectroscopy, FT-IR spectroscopy and photoluminescence spectroscopy. Sub-band gap absorption of ZnO thin films in the forbidden energy region was carried out using highly sensitive photothermal deflection spectroscopy (PDS). The absorption coefficients of ZnO thin films increased in the range of 1.5 eV to 3.0 eV, upon increasing zinc concentration. The optical band gaps were evaluated using Tauc's plots and found to be in the range of 3.31 eV to 3.18 eV. They showed the red shift in the band edge on increase in zinc concentration. The PL spectra of ZnO thin films revealed the characteristic band edge emission centered at the 396 nm along with green emission centered at the 521 nm.

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ZnO thin films deposition by spray pyrolysis: Influence of precursor solution properties

Cited by 154 publications

References 40 publications

Synthesis and Characterization of ZnO Nanoparticles using Effective of Co Doped

Synthesis and Characterization of ZnO Nanoparticles using Effective of Co Doped

Spray Deposited Nanostructured CuO Thin Films: Influence of Substrate Temperature and Annealing Process

Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown

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