The Deposition of Titanium Dioxide Nanostructures Layer Using One-step Solution Process and Spin-coating Technique

2021 ◽  
Vol 06 ◽  
Author(s):  
Mohd Faizal Bin Achoi ◽  
Tetsuo Soga ◽  
Mohamad Rusop Mahmood ◽  
Saifollah Abdullah
Keyword(s):  
Surface Roughness ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Solution Process ◽  
Spin Coating Technique ◽  
Electron Transport Layer ◽  
Bandgap Energy ◽  
Coating Technique ◽  
Toxic Material ◽  
One Step

Background: Titanium dioxide (TiO2) is an oxide-based material that has been recently discovered by many researchers owing to its properties such as a good absorber with excellent optical properties and the best stability compared to lead, Pb, which is not stable in the ambient air and is a toxic material. TiO2 is a non-toxic material and is not hazardous to the environment. TiO2 became a favored choice in the selection as a layer because of faster electron extraction and suitable bandgap energy. Objective: In this study, we deposited and optimized TiO2 at different TiO2 precursor molar concentrations varying between 0.005 – 0.05M. Methods: A one-step solution process and a low-temperature processing spin-coating technique were used. Results: Using the field emission scanning electron microscope, it was found that the surface morphology of the TiO2 Nanostructures Layer (NsL) was evenly distributed, presenting a homogeneous surface. An atomic force microscope showed that the TiO2 NsL appeared as a uniform, dense and compact surface close to each other. It was revealed that the surface roughness value (RMS) was 47.72nm, and the thickness of TiO2 NsL (Pmax) was 26.82nm. Besides, the surface coverage was good and uniform, while the percentage of surface roughness was found to be 11.8% using a surface profiler. The Ultra-violet visible spectroscopy showed the bandgap energy of 3.11 eV. Conclusion: The optimum result suggests that TiO2 NsL, as an electron transport layer (ETL), could be used for fabrication in the architecture engineering structure of Bi- perovskite based solar cell devices in the future.

scholarly journals Effect of Annealing Temperature On Iron Doped Titanium Dioxide Thin Films Prepared By Spin Coating Technique

2016 ◽  
Vol 2 (02) ◽  
pp. 61
Author(s):  
Mukhtar Effendi ◽  
Bilalodin B
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Annealing Temperature ◽  
Spin Coating Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Technique ◽  
Doped Titanium Dioxide ◽  
Titanium Dioxide Thin Films

<span>Iron (Fe) doped titanium dioxide (TiO<span>2<span>) thin films have been successfully deposited by <span>using spin coating technique. X-ray diffraction (XRD) and Scanning Electron Microscope <span>(SEM) were employed to characterize the microstructure and crystallite morphology of the <span>films. It was indicated that the rutile crystal orientation appears due to increasing annealing <span>temperature of the thin films. Furthermore, increasing annealing temperature of the thin <span>films yielded an increasing of porosity value which is related to the application on gas <span>sensor films.</span></span></span></span></span></span><br /></span></span></span>

Fabrication of Facile Synthesized ZnO/CuO Heterojunction Solar Cell Using Spin Coating Technique

2019 ◽  
Vol 11 (12) ◽  
pp. 1266-1272 ◽  
Author(s):  
Abdul Kuddus ◽  
Samia Tabassum ◽  
Abu Bakar Md. Ismail
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Current Density ◽  
Spin Coating ◽  
Hole Transport ◽  
Transport Layer ◽  
Spin Coating Technique ◽  
Electron Transport Layer ◽  
Coating Technique ◽  
Vis Spectroscopy

Simulation and experimentally investigation on cupric oxide (CuO) and zinc oxide (ZnO) based heterojunction solar cells (HJSC) fabricated using the sol–gel spin coating technique has been presented in this contribution. It is seen from simulated results, the photoconversion efficiency (PCE) of the hetero-junction solar cells employing with structure FTO/ZnO/CuO/Al can be enhanced through engineering on the thickness of photoactive layers, band gap and carrier concentration of photoactive materials. AMPS-1D simulated result showed cells efficiency of ∼5.5%, current density (Jsc) of 6 mA/cm2, open circuit voltage (Voc) of 0.9 V and fill-factor (FF) of 80%. Whereas solar cell fabricated with spin coating technique using optimized parameters from simulated results with conventional structure demonstrated a power conversion efficiency exceeding 1.15% with Vocof 1.36 V, Jsc of 1.99 mA/cm2 and FF of 53% without electron transport layer (ETL), hole transport layer (HTL) and anti-reflecting coating (ARC). Deposited film properties like structural, surface morphological, photovoltaic and optical were studied by using X-ray diffraction (XRD), scanning electron microscopy (SEM), and light current density–voltage (J–V) with AM1.5 solar simulator and UV-vis Spectroscopy. Although there is a variation between simulation and experimental results due to open air fabrication environment with no charge transport layers and no anti-reflection coating, this value of inorganic HJSC efficiency is possibly the highest reported for a ZnO/CuO interface fabricated using spin coating technique that highlights spin coating as a promising technique for inexpensive and scalable fabrication of ZnO/CuO based hetero-junctions solar cell.

Effects of Ag doping on compact TiO2 thin films synthesized via one-step sol–gel route and deposited by spin coating technique

2020 ◽  
Vol 31 (9) ◽  
pp. 7172-7181 ◽  
Author(s):  
Muhammad Arman Liaqat ◽  
Zakir Hussain ◽  
Zikriya Khan ◽  
Muhammad Aftab Akram ◽  
Ahmed Shuja
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Sol Gel ◽  
Spin Coating Technique ◽  
Tio2 Thin Films ◽  
Ag Doping ◽  
Coating Technique ◽  
One Step

Silica-Templated Continuous Mesoporous Carbon Films by a Spin-Coating Technique

2004 ◽  
Vol 16 (11) ◽  
pp. 884-886 ◽  
Author(s):  
J. Pang ◽  
X. Li ◽  
D. Wang ◽  
Z. Wu ◽  
V. T. John ◽  
...  
Keyword(s):  
Spin Coating ◽  
Mesoporous Carbon ◽  
Carbon Films ◽  
Spin Coating Technique ◽  
Coating Technique

Photoconductivity of Nanocomposite MEH-PPV: TiO2 Thin Films

2011 ◽  
Vol 13 ◽  
pp. 87-92 ◽  
Author(s):  
M.S.P Sarah ◽  
F.S. Zahid ◽  
M.Z. Musa ◽  
U.M. Noor ◽  
Z. Shaameri ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Morphology ◽  
Spin Coating ◽  
Glass Substrate ◽  
Spin Coating Technique ◽  
Coating Technique ◽  
Current Voltage ◽  
Current Voltage Characteristics

The photoconductivity of a nanocomposite MEH-PPV:TiO2 thin film is investigated. The nanocomposite MEH-PPV:TiO2 thin film was deposited on a glass substrate by spin coating technique. The composition of the TiO2 powder was varied from 5 wt% to 20 wt% (with 5 wt% interval). The concentration of the MEH-PPV is given by 1 mg/1 ml. The current voltage characteristics were measured in dark and under illumination. The photoconductivity showed increment in value as the composition of the TiO2 is raised in the polymer based solution. The absorption showed augmentation as the amount of TiO2 is increased. The escalation of the current voltage is then supported by the results of surface morphology.

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