Solution flow rate influence on ZnS thin films properties grown by ultrasonic spray for optoelectronic application

AbstractZinc sulphide (ZnS) thin films were prepared by improved spray pyrolysis (ISP) method. The ISP parameters, such as carrier gas flow rate, solution flow rate and substrate temperature, were controlled with an accuracy of ±0.25 lpm, ±1 ml/h and ±1 °C, respectively. The solution was sprayed in a pulsed mode. The substrate temperature was optimized by analyzing substrate temperature dependent properties of thin films. The thin film deposited at a temperature of 450 °C was dense and fairly smooth with satisfactory crystallinity and very small impurity content. The effect of precursor ratio in the solution on structural, compositional and optical properties of thin ZnS films, deposited at a temperature of 450 °C, was studied. A gradual increase in band gap energy from 3.524 eV to 3.634 eV, refractive index from 2.5 to 2.9 and dielectric constant from 6.6 to 8.7 were observed with the variation of solution precursor (Zn:S) ratio from (1:2) to (1:6). The structural and compositional studies support this kind of enhancement in optical properties. The results show that the thin ZnS film prepared by ISP at the substrate temperature of 450 °C from a solution with specific precursor ratio can be used for optoelectronic and photovoltaic applications.

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Effect of Sprayed Solution Flow Rate on the Physical Properties of Anatase TiO2 Thin Films

Journal of Electronic Materials ◽

10.1007/s11664-014-3341-9 ◽

2014 ◽

Vol 43 (11) ◽

pp. 4033-4040 ◽

Cited By ~ 6

Author(s):

Wafa Naffouti ◽

Tarek Ben Nasr ◽

Ahmed Mehdi ◽

Najoua Kamoun-Turki

Keyword(s):

Thin Films ◽

Physical Properties ◽

Flow Rate ◽

Anatase Tio2 ◽

Solution Flow Rate ◽

Tio2 Thin Films ◽

Solution Flow

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Effect of solution flow rate on the physical properties of spray pyrolyzed MoO3 thin films as silicon-based heterojunction device

Superlattices and Microstructures ◽

10.1016/j.spmi.2021.107111 ◽

2021 ◽

pp. 107111

Author(s):

Bashir Yusuf ◽

Md Roslan Hashim ◽

Mohd Zamir Pakhuruddin ◽

Mohd Mahadi Halim

Keyword(s):

Thin Films ◽

Physical Properties ◽

Flow Rate ◽

Solution Flow Rate ◽

Solution Flow ◽

Heterojunction Device ◽

Silicon Based

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Utilization of Waste of Enzymes Biomass as Biosorbent for the Removal of Dyes from Aqueous Solution in Batch and Fluidized Bed Column

Revista de Chimie ◽

10.37358/rc.20.1.7804 ◽

2020 ◽

Vol 71 (1) ◽

pp. 1-12

Author(s):

Salman H. Abbas ◽

Younis M. Younis ◽

Mohammed K. Hussain ◽

Firas Hashim Kamar ◽

Gheorghe Nechifor ◽

...

Keyword(s):

Experimental Data ◽

Aqueous Solution ◽

Particle Size ◽

Adsorption Capacity ◽

Fluidized Bed ◽

Flow Rate ◽

Fungal Biomass ◽

Solution Flow Rate ◽

Maximum Adsorption Capacity ◽

Solution Flow

The biosorption performance of both batch and liquid-solid fluidized bed operations of dead fungal biomass type (Agaricusbisporus ) for removal of methylene blue from aqueous solution was investigated. In batch system, the adsorption capacity and removal efficiency of dead fungal biomass were evaluated. In fluidized bed system, the experiments were conducted to study the effects of important parameters such as particle size (701-1400�m), initial dye concentration(10-100 mg/L), bed depth (5-15 cm) and solution flow rate (5-20 ml/min) on breakthrough curves. In batch method, the experimental data was modeled using several models (Langmuir,Freundlich, Temkin and Dubinin-Radushkviechmodels) to study equilibrium isotherms, the experimental data followed Langmuir model and the results showed that the maximum adsorption capacity obtained was (28.90, 24.15, 21.23 mg/g) at mean particle size (0.786, 0.935, 1.280 mm) respectively. In Fluidized-bed method, the results show that the total ion uptake and the overall capacity will be decreased with increasing flow rate and increased with increasing initial concentrations, bed depth and decreasing particle size.

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