scholarly journals Structural and optical characterization of aluminum zinc co-doped tin oxide grown by sol-gel spin coating techniques

2020 ◽  
Vol 18 (2) ◽  
pp. 109-117
Author(s):  
Oluwaseun Adedokun ◽  
Ismaila Bello ◽  
Olufunke Adedeji ◽  
Kamoru Talabi ◽  
Olaniyi Olatunji ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Thickness ◽  
Photon Energy ◽  
Tin Oxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Visible Region ◽  
Gravimetric Method ◽  
X Ray Diffraction ◽  
Co Doped

Aluminum Zinc co-doped Tin Oxide (AZSO) thin film was grown by sol-gel spin coating techniques onto a glass substrate using various doping concentrations (0, 2, 4, 6, and 8 wt%) and the effect of doping on each sample were studied using structural analysis; X-ray Diffraction (XRD) pattern, gravimetric method; thin film thickness and UV photo-spectrometer; optical properties. The results of the XRD were revealed that all the peaks have a tetragonal phase of SnO2, which were oriented at the 110, 101, and 211 planes. The film thickness was observed to vary with doping concentration. In the visible region, all the film samples were exhibited at average transmittance. The coefficient of absorption was gradually increased with an increase in photon energy at a certain level with a decrease in the absorption coefficient as the photon energy increases further. At 550-800 nm range of wavelength, a high extinction coefficient (k) was recorded and the refractive index curves show regular dispersion behavior. The optical conductivity of the films followed a similar pattern, which showed that conductivity increased to a peak at 3.60 eV. The energy bandgap of the film samples (AZSO1 - AZSO5) is 4.095 eV, 4.103 eV, 4.087 eV, 4.114 eV, and 4.106 eV, respectively. The studies show that the properties of Al-Zn co-doped SnO2 films can be explored for optoelectronic applications.

Structural and Optical Properties of Al Co-Doped ZnCoO Thin Film

2014 ◽  
Vol 989-994 ◽  
pp. 656-659
Author(s):  
Ping Cao ◽  
Yue Bai
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Al Doping ◽  
X Ray ◽  
Uv Emission ◽  
Uv Absorption Spectroscopy ◽  
Co Doped

Al co-doped ZnCoO thin film has been prepared by a sol-gel method. The structural and optical properties of the sample were investigated. X-ray diffraction and UV absorption spectroscopy analyses indicate that Al3+ and Co2+ substitute for Zn2+ without changing the wurtzite structure. With the Al doping, the visible emission increased and the UV emission decreased, which is attributed to the increase of O vacancies and Zn interstitials.

Synthesis and Characterizations of Strontium Substituted Hydroxyapatite Thin Films

2010 ◽  
Vol 93-94 ◽  
pp. 231-234
Author(s):  
B. Hongthong ◽  
Satreerat K. Hodak ◽  
Sukkaneste Tungasmita
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Chemical Composition ◽  
Spin Coating ◽  
Phase Structure ◽  
Sol Gel ◽  
Cross Linking ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sol Gel Process

Strontium substituted hydroxyapatite(SrHAp) were fabricated both in the form of powder as reference and thin film by using inorganic precursor reaction. The sol-gel process has been used for the deposition of SrHAp layer on stainless steal 316L substrate by spin coating technique, after that the films were annealed in air at various temperatures. The chemical composition of SrHAp is represented (SrxCa1-x)5(PO4)3OH, where x is equal to 0, 0.5 and 1.0. Investigations of the phase structure of SrHAp were carried out by using X-ray diffraction technique (XRD). The results showed that strontium is incorporated into hydroxyapatite where its substitution for calcium increases in the lattice parameters, and Sr3(PO4)2 can be detected at 900°C. The SEM micrographs showed that SrHAp films exhibited porous structure before develop to a cross-linking structure.

scholarly journals Growth of Tin Oxide Thin Film by Aluminum and Fluorine Doping Using Spin Coating Sol-Gel Techniques

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Susilawati Susilawati ◽  
Aris Doyan ◽  
Lalu Muliyadi ◽  
Syamsul Hakim
Keyword(s):  
Thin Film ◽  
Thin Layer ◽  
Tin Oxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Spin Coating Technique ◽  
Oxide Thin Film ◽  
Coating Technique ◽  
Materials Used ◽  
Film Making

Abstract: The growth of tin oxide thin film by Aluminum doping and Fluorine has been carried out with the sol-gel spin coating technique. The growth aims to determine the quality of the thin layer formed based on variations in doping aluminum and fluorine. The basic ingredients used were SnCl2.2H2O, while the doping materials used were Al (Aluminium) and F (Fluorine) with variations in dopant concentrations (0, 5, 10, 15, 20 and 25)%. The growth of a thin layer using measured glass (10x10x 3) mm as a substrate. The growth of thin films includes substrate preparation, sol-gel making, thin film making, and heating processes. The growth of thin layer was dripped on a glass substrate with sol-gel spin coating technique at 1 M sol concentration and treated with maturation for 24 hours. The next step is making a thin layer using a spin coater at a speed of 2000 rpm for 3 minutes. After that, the substrate is heated in an oven at 100°C for 60 minutes. The results showed that the transparency level of the tin oxide layer increases with increasing amounts of doping Aluminum and fluorine. Key words: Aluminum, Fluorine, Sol-gel, Spin Coating, Thin Film, Tin Oxide

scholarly journals Synthesis of SnO2 Thin Layer with a Doping Fluorine by Sol-Gel Spin Coating Method

2019 ◽  
Vol 5 (2) ◽  
pp. 175 ◽  
Author(s):  
Lalu Muliyadi ◽  
Aris Doyan ◽  
Susilawati Susilawati ◽  
Syamsul Hakim
Keyword(s):  
Thin Film ◽  
Thin Layer ◽  
Tin Oxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Thin Layers ◽  
Basic Material ◽  
Spin Coating Method ◽  
Number Of Layers ◽  
Coating Method

A thin layer of tin oxide with doping Fluorine was synthesized using the sol-gel spin coating method. The synthesis aims to determine the quality of thin layers formed based on temperature variations and the number of layers. The basic material used is SnCl2.2H2O, while the doping material used is NH4F with variations in concentrations of dopants 0, 5, 10, 15, 20 and 25%. The substrate used is glass with a size of 10 x 10 x 3 mm. The synthesis of the thin layer includes substrate preparation, sol-gel making, thin film making, and heating process. At this stage SnO2:F is deposited on a glass substrate with sol-gel spin coating technique at the concentration of sol 1 M with doping levels of Fluorine 0, 5, 10, 15, 20 and 25%, and treated with maturation for 24 hours. Making a thin layer using a spin coater at a speed of 2000 rpm for 3 minutes. The layer made consists of one layer, two layers, three layers and four layers. The resulting layer shows that the higher the doping percentage, the higher the transparency of the layer. In addition, the more the number of layers, the lower the transparency level. Keywords: Thin Film, Tin Oxide, Fluorine, Sol-gel, Spin Coating

scholarly journals Effect of iron doping on structural and optical properties of TiO2 thin film by sol–gel routed spin coating technique

2017 ◽  
Vol 07 (04) ◽  
pp. 1750024 ◽  
Author(s):  
Stephen Lourduraj ◽  
Rayar Victor Williams
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Spin Coating ◽  
Sol Gel ◽  
Visible Region ◽  
Spin Coating Technique ◽  
Optical Measurements ◽  
Structural And Optical Properties ◽  
Coating Technique

Thin films of iron (Fe)-doped titanium dioxide (Fe:TiO[Formula: see text] were prepared by sol–gel spin coating technique and further calcined at 450[Formula: see text]C. The structural and optical properties of Fe-doped TiO2 thin films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible spectroscopy (UV–vis) and atomic force microscopic (AFM) techniques. The XRD results confirm the nanostructured TiO2 thin films having crystalline nature with anatase phase. The characterization results show that the calcined thin films having high crystallinity and the effect of iron substitution lead to decreased crystallinity. The SEM investigations of Fe-doped TiO2 films also gave evidence that the films were continuous spherical shaped particles with a nanometric range of grain size and film was porous in nature. AFM analysis establishes that the uniformity of the TiO2 thin film with average roughness values. The optical measurements show that the films having high transparency in the visible region and the optical band gap energy of Fe-doped TiO2 film with iron (Fe) decrease with increase in iron content. These important requirements for the Fe:TiO2 films are to be used as window layers in solar cells.

scholarly journals Penumbuhan Lapisan Tipis Barium Titanat (BaTiO3) menggunakan Metode Sol-Gel dengan Variasi Mol

2017 ◽  
Vol 2 ◽  
pp. 36
Author(s):  
Ayu Uswatu Lissa Sapta Setyadi ◽  
Yofentina Iriani ◽  
Fahru Nurosyid
Keyword(s):  
Thin Film ◽  
Particle Size ◽  
Spin Coating ◽  
Quartz Substrate ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Number Of Layers ◽  
Barium Titanate Thin Film

<p class="AbstractEnglish"><strong>Abstra</strong><strong>ct</strong><strong>:</strong><strong> </strong>Preparation of Barium Titanate thin film (BaTiO3) has been done on Quartz substrate using sol gel method with spin coating technique. A thin film BaTiO3 wase made with a mole variation of 0.4 mol and 0.8 mol at a rotation speed of 3000 rpm. The samples were annealed at 400 ° C with 30 minutes stand-up time and at 900 ° C with 2 hours stand-up time and a heating rate of 5 ° C per minute. Characterization of optical properties samples was performed using UV-Vis spectrometers and characterization of microstructure samples using X-Ray Diffraction (XRD). The particle size was calculated by Scherer's formula. Based on the results of the analysis it was found that mole variation of the solution influenced the absorbance value, intensity, crystality level and BaTiO3 thin film particle size. The greater mole of BaTiO<sub>3</sub> solution the higher then absorbance value. The fewer then number of layers the greater then diffraction peak intensity. More number of layers the greater the level of crystallinity and particle size.</p><p class="KeywordsEngish"> </p><p class="AbstrakIndonesia"><strong>Abstra</strong><strong>k: </strong>Pembuatan lapisan tipis Barium Titanat (BaTiO<sub>3</sub>) telah dilakukan  diatas substrat Quartz menggunakan metode sol gel dengan teknik spin coating. Lapisan tipis BaTiO<sub>3 </sub>dibuat dengan variasi mol  0.4 mol dan  0.8 mol pada kecepatan putar 3000 rpm. Sampel diannealing  pada suhu 400<sup>o</sup>C dengan waktu tahan 30 menit  dan pada suhu 900<sup>o</sup>C dengan waktu tahan 2 jam dan kenaikan suhunya 5<sup>o</sup>C per menit. Karakterisasi sifat optik sampel dilakukan  menggunakan spektrometer UV-Vis dan karakterisasi struktrur mikro sampel menggunakan X-Ray Diffraction (XRD).Ukuran partikel dihitung dengan formula Scherer. Berdasarkan hasil analisis didapat bahwa variasi mol larutan mempengaruhi  mempengaruhi nilai absorbansi, intensitas, tingkat kekristalan dan ukuran partikel lapisan tipis BaTiO<sub>3</sub>. Semakin besar mol larutan BaTiO<sub>3 </sub>maka semakin tinggi nilai absorbansinya. Semakin sedikit jumlah lapisan maka intensitas puncak difraksi semakin besar. Semakin banyak jumlah lapisan maka semakin besar pula tingkat kekristalan dan ukuran partikel<em>. </em></p>

Study of Titanium Dioxide Thin Film by Sol-Gel Method

2014 ◽  
Vol 925 ◽  
pp. 278-281 ◽  
Author(s):  
Sharipah Nadzirah ◽  
Uda Hashim ◽  
N. Malihah
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

Titanium dioxide (TiO2) thin films based interdigitated electrodes (IDEs) have been synthesized using sol-gel method with hydrochloric acid (HCl) as catalyst. The prepared TiO2 solution has been deposited onto silicon dioxide (SiO2) substrates via spin-coating technique. Film was annealed at 500 °C and aluminium (Al) IDEs have been fabricated. Finally the X-ray diffraction (XRD) shows high intensity of both anatase and rutile peaks exist on 10 nm TiO2 thin film. Average crystallite size of the nanoparticles is seen to be 25 nm. UvVisible spectroscopic (UvVis) technique was used for the transmittance spectra characterization of the sample.

Structural, Morphological and Electrical Properties of CdO Thin Film Produced by Sol–Gel Spin Coating Procedure

2020 ◽  
Vol 12 (1) ◽  
pp. 75-77
Author(s):  
Renu Kumari ◽  
Vipin Kumar
Keyword(s):  
Thin Film ◽  
Electrical Properties ◽  
Spin Coating ◽  
Sol Gel ◽  
Cadmium Oxide ◽  
Hall Effect Measurement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Procedure ◽  
Direct Current Measurement

A sol–gel spin coating procedure was used to produce cadmium oxide (CdO) thin film on the precleaned glass substrate. The structural, morphological and electrical properties of the produced film were specified by XRD, SEM and two-probe method. The polycrystalline nature with cubical structure of the cadmium oxide (CdO) thin film was confirmed by X-ray diffraction (XRD). Scanning electron microscope (SEM) confirms the uniform formation of film. The semiconducting character of the film was confirmed by electrical conductivity (direct current) measurement in dark. The Hall effect measurement of cadmium oxide film confirms the n-type conductivity.

Sign in / Sign up

Export Citation Format

Share Document