Properties of P(VDF-TeFE) thin film formed by annealing process with electric field

2009 ◽  
Vol 1218 ◽  
Author(s):  
Jong-Hyeon Jeong ◽  
Chiharu Kimura ◽  
Hidemitsu Aoki ◽  
Masanori Okuyama ◽  
Takashi Sugino
Keyword(s):  
Thin Film ◽  
Curie Point ◽  
Spin Coating ◽  
Thermal Process ◽  
Annealing Process ◽  
Film Properties ◽  
Surface Stability ◽  
Piezoelectric Polymer ◽  
Coating Method

AbstractIn order to apply P(VDF-TeFE) piezoelectric polymer to micro-generator as a membrane, the polymer is deposited on a substrate by spin-coating method. In this process, some changes of properties and quality of the film are caused by a solvent which was used to dissolve the polymer granule. Since a solvent affects the film properties and surface stability, we have carried out the thermal process at a temperature higher than melting point. However, this thermal process due to a temperature higher than Curie point of the polymer causes a falling-off in electrical properties. In this paper, we have studied a method to prevent a falling-off in electric properties of P(VDF-TeFE) film even though the film is annealed at a temperature higher than Curie point.

The Study about the Control of Defect Factors to Improve Properties of P(VDF-TeFE) Thin Film

2011 ◽  
Vol 1312 ◽  
Author(s):  
Jong-Hyeon Jeong ◽  
Daiki Terashima ◽  
Chiharu Kimura ◽  
Hidemitsu Aoki
Keyword(s):  
Thin Film ◽  
Electric Field ◽  
Spin Coating ◽  
Vacuum Chamber ◽  
Annealing Process ◽  
Film Properties ◽  
Surface Stability ◽  
Piezoelectric Polymer ◽  
Coating Method ◽  
Critical Intensity

ABSTRACTIn order to apply P(VDF-TeFE) piezoelectric polymer to micro-generator as a membrane, the polymer is deposited on a substrate by spin-coating method. Since a solvent affects the film properties and surface stability, we have carried out the thermal process at a temperature higher than melting point. In the annealing process of a P(VDF-TeFE) thin film, electrical properties of the film was improved by an application of an electric field. The established study was the investigation of variations in characteristics by an application of a certain electric field. We have attempted to measure about the critical intensity of an electric field and investigate what the influences of the application is caused using a XPS spectrum in this study. Moreover, in order to control the intrusion of impurities, we have used the vacuum chamber to carry out the annealing process in it.

A Novel Ethanol-Based Non-Particulate Ink for Spin-Coating Cu2ZnSnS4 Thin Film

2021 ◽  
Vol 16 (2) ◽  
pp. 136-141
Author(s):  
Jingyuan Zhang ◽  
Yusheng Liu ◽  
Jianing Song ◽  
Mu Zhang ◽  
Xiaodong Li
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electrical Properties ◽  
Spin Coating ◽  
Treatment Temperature ◽  
Coated Film ◽  
Coating Method ◽  
Pre Treatment ◽  
Cu2znsns4 Thin Film ◽  
Czts Thin Films

The Cu2ZnSnS4 (CZTS) thin films were fabricated by the direct solution coating method using a novel non-particulate ink. The ink was formulated using ethanol as the solvent and 1,2-diaminopropane as the complex-ing agent. The pure phase kesterite films with good crystallinity, large-sized crystals and excellent electrical properties were prepared by the spin-coating deposition technique using the homogeneous and air-stable ink. It was found that the subsequent pre-treatment temperature had an influence on the film crystallinity and electrical properties. The best film was obtained by pre-treating the spin-coated film at 250 °C, and then post-annealing at 560 °C. The film shows a narrow bandgap of 1.52 eV and excellent electrical properties, with a resistivity of 0.07 Ocm, carrier concentration of 3.0 x 1017 cm-3, and mobility of 4.15 cm2 V-1 s-1. The novel non-particulate ink is promising for printing high quality CZTS thin films as absorber layers of thin film solar cells.

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

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.

scholarly journals Improvement QCM Quality By Polystyrene Coating and Bovine Serum Albumin as Immobilization Agent

2019 ◽  
Vol 8 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Lalu A. Didik ◽  
Yahdi Yahdi ◽  
Masruroh Masruroh
Keyword(s):  
Thin Film ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Spin Coating ◽  
Bovine Serum ◽  
Quartz Crystal ◽  
Measuring System ◽  
Frequency Shifts ◽  
Impedance Analyzer ◽  
Coating Method

Polystyrene (PS) thin film with various concentration of mass (1%, 3%, and 5%) has been deposited onto Quartz Crystal Microbalance (QCM)  surface by a spin coating method. The purpose of this research is the improvement of Bovine Serum Albumin (BSA) immobilization into the QCM surface. The QCM resonance frequency has been investigated by means of Impedance Analyzer. The film thickness was calculated by the Sauerbrey equation. The surface roughness of the PS layer was observed by noncontact Topography Measuring System (TMS-1200). Calculation result using a Sauerbrey equation shows the thickness of the PS layer increases with the increasing PS concentration. The QCM/PS with 1% and 5% concentration of mass has rougher morphology and more frequency shifts caused by BSA injection compared to 3% concentration of PS

Al Doped ZnO Thin Film Based Ultraviolet Photo-Conductive Sensor Prepared by Sol-Gel Spin-Coating Method

2009 ◽  
Author(s):  
M. H. Mamat ◽  
M. Z. Sahdan ◽  
S. Amizam ◽  
H. A. Rafaie ◽  
Z. Khusaimi ◽  
...  
Keyword(s):  
Thin Film ◽  
Spin Coating ◽  
Sol Gel ◽  
Zno Thin Film ◽  
Spin Coating Method ◽  
Coating Method ◽  
Doped Zno

IMPROVED PROPERTIES OF SnO2 THIN FILMS OBTAINED VIA SPIN COATING METHOD BY VARYING THE SOLUTION CONCENTRATION

2018 ◽  
Vol 25 (04) ◽  
pp. 1850092
Author(s):  
SOUMIA BELHAMRI ◽  
NASR-EDDINE HAMDADOU
Keyword(s):  
Spin Coating ◽  
Visible Spectrum ◽  
Optical Transmittance ◽  
Solution Concentration ◽  
X Ray Diffraction ◽  
Film Properties ◽  
Average Roughness ◽  
Arithmetic Average ◽  
Glass Substrates ◽  
Coating Method

The aim of this work is to study the solution concentration effect on the SnO2 thin film properties, which were deposited on glass substrates by spin coating technique and annealed for one hour at 500[Formula: see text]C. X-ray diffraction (XRD) spectra show that the films deposited at various solution concentrations (0.5[Formula: see text]mol/L, 0.7[Formula: see text]mol/L and 1[Formula: see text]mol/L) are polycrystalline with a tetragonal rutile type. Grains have two preferred orientations along the directions (110) and (101) corresponding to 2[Formula: see text] equal to 26.74[Formula: see text] and 34.11[Formula: see text], respectively. We have also noted that the grain size changes between 109[Formula: see text]nm and 178[Formula: see text]nm. However, the film coated at 10 deposition cycles and 0.7[Formula: see text]mol/L solution concentration has a minimum arithmetic average roughness of 0.376 nm. The optical transmittance of the films in the visible spectrum was in the range of 77–84% and the optical band gap gradually decreases with the decrease of the solution concentration from 4.11[Formula: see text]eV to 3.56[Formula: see text]eV.

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