scholarly journals Micro-structural, Morphological and Optical Properties of Pure and Metal (Mn & Mg) Doped ZnO Thin Films by Low Cost SILAR Method

2019 ◽  
Vol 31 (4) ◽  
pp. 901-906
Author(s):  
K. Radhi Devi ◽  
G. Selvan ◽  
M. Karunakaran ◽  
K. Kasirajan
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Low Cost ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
Silar Method ◽  
Glass Substrates ◽  
Uv Visible ◽  
Doped Zno ◽  
Mg Doped

Pure and metals (Mn & Mg) doped zinc oxide (ZnO, ZnO/Mn and ZnO/Mg) thin films have been successfully grown onto a glass substrates by low cost SILAR method. The structural, morphological, compositional, functional group and optical properties of the prepared films were studied using X-ray diffraction, scanning electron microscope and EDAX, FTIR and UV-visible spectrophotometer, respectively. The structure of the films were found to be hexagonal with polycrystalline in nature with preferential orientation along (002) plane. From Fourier Transform Infrared spectroscopy, the presence of functional groups and its corresponding molecular vibrations were assessed. In UV-visible spectroscopy, the obtained direct optical band gap values 3.46, 3.56 and 3.7 eV for pure, Mn and Mg doped ZnO thin films, respectively. Morphological results showed that the remarkable changes in morphology due to the effect of metal doping. EDAX studies showed that the presence of zinc and oxygen content and also a doping metal ions.

Substrate Temperature Effect on Structural and Optical Properties of ZnO Thin Films Deposited by Spray Pyrolysis

2019 ◽  
Vol 397 ◽  
pp. 1-7
Author(s):  
Hassene Nezzari ◽  
Riad Saidi ◽  
Adel Taabouche ◽  
Meriem Messaoudi ◽  
Mohamed Salah Aida
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Substrate Temperature ◽  
Hexagonal Structure ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Glass Substrates ◽  
Uv Visible ◽  
Heated Glass

In this work, ZnO thin films grown on heated glass substrates in a temperature range of 300 to 500 °C with a 50°C step. The prepared solution is composed of methanol and zinc acetate Zn(CH3COO)2.2H2O. ZnO thin films are deposited by pyrolysis spray technique, our work focuses on the study of the substrate temperature influence on the structural and optical properties of these layers. Therefore, The X-ray diffraction, showed a Wurtzit hexagonal structure of elaborated films, with (002) as a preferred orientation, and a grain size of 64 to 74 nm. The optical transmission spectroscopy UV-Visible, illustrated an increase of optical band gap from 3.19 to 3.25 eV, proportionally with the substrate temperature.

Thermal conversion of CBD grown ZnS thin films to ZnO

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Kooliyankal Naseema ◽  
Kaniyamkandy Ribin ◽  
Nidiyanga Navya ◽  
Prasoon Prasannan
Keyword(s):  
Thin Films ◽  
Low Cost ◽  
Thermal Conversion ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
Glass Substrates ◽  
Anion Substitution ◽  
Nano Crystalline ◽  
Before And After ◽  
Uv Visible

AbstractNano crystalline zinc sulfide thin films were deposited onto glass substrates by chemical bath deposition method. One of the samples was annealed at 300 °C for 2 h in air using a muffle furnace. The prepared thin films were investigated by X-ray diffraction (XRD), UV–visible spectroscopy (UV–vis), photoluminescence spectroscopy (PL), scanning electron microscopy (SEM) and Raman spectroscopy (FT-R) studies before and after annealing. The analysis confirmed the thermal-induced anion substitution and conversion of ZnS crystal to ZnO wurtzite crystal. XRD pattern showed that these films were phase pure and polycrystalline in nature. Optical band gap was found to be 3.86 eV for ZnS and 3.21 eV for ZnO. The films prepared by this simple, low-cost technique are suitable for photovoltaic and optoelectronic applications.

scholarly journals Synthesis and characterization of Mg-doped ZnO thin-films electrochemically grown on FTO substrates for optoelectronic applications

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40467-40479
Author(s):  
R. Kara ◽  
L. Mentar ◽  
A. Azizi
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Zno Thin Films ◽  
Synthesis And Characterization ◽  
Deposition Method ◽  
Glass Substrates ◽  
Electrochemical Deposition Method ◽  
Doped Zno ◽  
Mg Doped

Mg-doped ZnO (MZO) thin films were successfully fabricated on fluorine-doped tin-oxide (FTO)-coated glass substrates by an electrochemical deposition method using aqueous electrolytes of 80 mM Zn(NO3)2 with different concentrations of Mg(NO3)2.

Growth of the Sol-Gel Based ZnO:Al Thin Films with High Doping Concentration

2012 ◽  
Vol 485 ◽  
pp. 144-148
Author(s):  
Jian Lin Chen ◽  
Yan Jie Ren ◽  
Jian Chen ◽  
Jian Jun He ◽  
Ding Chen
Keyword(s):  
Thin Films ◽  
Doping Concentration ◽  
Sol Gel ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Substrates ◽  
High Doping Concentration ◽  
Doped Zno ◽  
Surface Morphologies

Preferentially oriented Al-doped ZnO thin films with doping concentration of 1, 2, 3, 5 and 10 mol% respectively were prepared on glass substrates via sol-gel route. The crystallinity of films was characterized by X-ray diffraction and the surface morphologies were observed by scanning electron microscopy. The results show that ZnO:Al films at low doping concentration (1, 2 mol%) grow into dense homogenous microstructure. However, as for high doping concentration (3, 5, 10 mol%), Al3+ precipitate in the form of amorphous Al2O3 and ZnO:Al films exhibit heterogeneous nucleation and exceptional growth of the big plate-like crystals at the interface of the amorphous Al2O3 and ZnO:Al matrix.

scholarly journals Impact of ZnO Atomic Ratio on Structural, Morphological and Some Optical Properties of (SnO2)1-x (ZnO)x Thin Films

2020 ◽  
pp. 333-340
Author(s):  
Donia Yas Khudair ◽  
Ramiz Ahmed Al Ansari
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Energy Gap ◽  
Atomic Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Substrates ◽  
Atomic Force ◽  
Uv Visible ◽  
Longitudinal Structures

In this work, SnO2 and (SnO2)1-x(ZnO)x composite thin films with different ZnO atomic ratios (x=0, 5, 10, 15 and 20%) were prepared by pulsed laser deposition technique on clean glass substrates at room temperature without any treatment. The deposited thin films were characterized by x-ray diffraction atomic force microscope  and UV-visible spectrophotometer to study the effect of the ZnO atomic ratio on their structural, morphological and optical properties. It was found that the crystallinety and the crystalline size vary according to ZnO atomic ratio. The surface appeared as longitudinal structures which was convert to spherical shapes with increasing ZnO atomic ratio. The optical transmission and energy gap increased with increasing ZnO atomic ratio. 

Structural and Optical Properties of Mn-Doped ZnO Thin Films Prepared by SILAR Method

2017 ◽  
Vol 73 ◽  
pp. 22-30
Author(s):  
Marimuthu Karunakaran ◽  
S. Maheswari ◽  
Kasinathan Kasirajan ◽  
Sivaji Dinesh Raj ◽  
Rathinam Chandramohan
Keyword(s):  
Thin Films ◽  
Xrd Analysis ◽  
Layer Growth ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Silar Method ◽  
X Ray ◽  
Glass Substrates ◽  
Mn Doped

The growth of highly textured Mn doped Zinc oxide (ZnO) thin films with a preferred (002) orientation has been reported by employing successive ionic layer growth by adsorption reaction (SILAR) using a sodium zincate bath on glass substrates has been reported. The prepared films were characterized by X-ray diffraction (XRD), optical spectroscopy and scanning electron microscopy (SEM) measurement. The XRD analysis reveals that the films were polycrystalline. Morphology of the films was found to be uniform with smaller grains and exhibits a structure with porous. The calculated Band gap value was found to be 3.21 eV prepared at 15 mM MnSO4 concentration.

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