Determination of Resonance Parameters of The PANI Thin Film Fabricated using Spin Coating Method

Abstract This study aims to determine the resonance parameters of polyaniline thin films to better understand the viscoelasticity properties of polyaniline films. The spin coating method was used with varying solvent concentrations and rotating speed of spin coater during the deposition Polyaniline (PANI) thin film on a quartz crystal microbalance (QCM). To determine the resonance parameters of the PANI thin film, the impedance and QCM frequency measurements were first carried out before and after coated with PANI. The modelling used is a modified BVD model, and the determined resonance parameters are C0, C1, L1, R1, L2 and R2. From the results of the analysis using the GRG Nonlinear solver program, it was found that solution concentration and rotational speed in the spin coating process has a significant effect on resonator parameters of PANI thin film. The best solution concentration from this study was 2% DMF with a rotational speed of 2,000 rpm. This is because in these conditions it provides a minimal damping effect on QCM.

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Structure, morphology, and optical properties of ZnO:Mg thin film prepared by sol-gel spin coating method

Jurnal Ilmiah Pendidikan Fisika Al-Biruni ◽

10.24042/jipfalbiruni.v10i2.7239 ◽

2021 ◽

Vol 10 (2) ◽

pp. 241-250

Author(s):

Budi Astuti ◽

Putut Marwoto ◽

Azizah Zhafirah ◽

Nur Hamid ◽

Didik Aryanto ◽

...

Keyword(s):

Thin Film ◽

Optical Properties ◽

Spin Coating ◽

Sol Gel ◽

Bandgap Energy ◽

Spin Coating Method ◽

Rotating Speed ◽

Mg Doping ◽

Structure Morphology ◽

Coating Method

This research was conducted to analyze the Mg doping concentration effect on the structure, morphology, and optical properties of ZnO thin film prepared using the sol gel spin coating method. The Mg concentration was varied in the mole fraction of 1%, 3%, and 5%. Firstly, ZnO: Mg solution was dropped on a substrate and grown with a rotating speed of 3000 rpm and then annealed at 500 °C for 2 hours. The characterization of thin films' structure, morphology, and optical properties was done using XRD, FESEM, EDX, and UV-VIS spectrophotometer. XRD result showed a polycrystalline structure with three dominant peaks of (100), (002), and (101) plane, hexagonal wurtzite structures. Furthermore, the crystallite size was increased with the increase of Mg doping. FESEM results showed that the 5% ZnO: Mg thin film was the densest and least void from other films. In addition, the results of UV-Vis-NIR analysis showed the highest absorption value at a wavelength of 360-370 nm. The bandgap energy increased at 1% and 3% Mg doping samples but decreased by 5% Mg doping comes from the excess of oxygen in thin film with 5% Mg doping.

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Effect of the Precursor Solution Concentration of CuI Thin Film Deposited by Spin Coating Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.364.417 ◽

2011 ◽

Vol 364 ◽

pp. 417-421

Author(s):

Muhamad Nur Amalina ◽

Muhammad Atiq Azman ◽

Mohamad Mahmood Rusop

Keyword(s):

Thin Film ◽

Thin Films ◽

Band Gap ◽

Spin Coating ◽

Precursor Solution ◽

Solution Concentration ◽

Precursor Concentration ◽

High Concentration ◽

Spin Coating Method ◽

Coating Method

In this research, the effect of precursor concentration of CuI thin film deposited by spin coating method was studied. The wide band gap p-type semiconductor CuI thin film was prepared by mixing the CuI powder with 50 ml of acetonitrile as a solvent. The CuI concentration varies from 0.05M to 0.5M. The speed for spin coating is 1000 rpm for 60 seconds. After the deposition the CuI thin films were annealed at 150°C. The result shows the CuI thin film properties strongly depends on its precursor concentration. Thickness between 33.65 nm - 441.25 nm was obtained as the concentration increased. The increment of thickness affected the electrical property with resistivity of about 10-6 Ω.cm and 101 Ω.cm was observed for all the CuI thin films. For optical properties, the transmittance decreased with high concentration as high amount of CuI particle were observed in the thin films. From the transmittance, the absorption coefficient of 10-6 m-1 and optical band gap of 3.10 and 3.50 eV for all the films were observed using Tauc’s plot.

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Elaboration of Conductive Polymer thin films (P3HT/PCBM) by spin coating method – Application for hybrid organic solar cell

Science and Technology Development Journal ◽

10.32508/stdj.v17i3.1368 ◽

2014 ◽

Vol 17 (3) ◽

pp. 30-40

Author(s):

Son Hoang Cao Tran ◽

Quoc Kien Quoc ◽

Nhan Thuc Chi Ha ◽

Top Khac Le ◽

Thang Bach Phan ◽

...

Keyword(s):

Thin Film ◽

Solar Cell ◽

Spin Coating ◽

High Performance ◽

Short Circuit ◽

Rotational Velocity ◽

Conductive Polymer ◽

Spin Coating Method ◽

Donor And Acceptor ◽

Coating Method

The nanostructured polymer-fullerene thin film is one of the most prominent materials to make the hybrid bulk heterojunction solar cell (BHJ) with high conversion efficiency. Especially when the blend of P3HT and PCBM was used as the donor and acceptor materials. The properties of P3HT and PCBM layer in solar cell has been much studied and considered as high performance systems. One of the important factors for the high performance device is the fabrication of photo active layer with the appropriate thickness and morphology. In the ideal case, the intermolecular distance between the polymer and fullerene should be approximately 10-20 nm (the exciton diffusion distance) giving an area of extensive contact between the two phases. After the dissociation of carriers, the two polymer phases should create the path way for carriers to reach electrodes. But so far, this ideal configuration has not been published. In this work, we’ve elaborated the P3HT and PCBM photo active layers by spin coating methodon glass substrates covered ITO electrode. The rotational velocity was determined to get the necessary effective thickness of the polymer film. The annealing effect on structure, optical and electrical properties of the polymer thin film with different content of PCBM were also investigated. The experiments show the best device on electrode ITO has I-V characteristic as a photodiode and short circuit current (Isc) aboutmili-Ampere. These results demonstrate convincingly that polymer layers elaborated by spin coating method can result a good performance of the device.

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