A nanogroove-guided slot-die coating technique for highly ordered polymer films and high-mobility transistors

2016 ◽  
Vol 52 (2) ◽  
pp. 358-361 ◽  
Author(s):  
Aung Ko Ko Kyaw ◽  
Lim Siew Lay ◽  
Goh Wei Peng ◽  
Jiang Changyun ◽  
Zhang Jie
Keyword(s):  
Polymer Films ◽  
Processing Time ◽  
High Mobility ◽  
Polymer Chains ◽  
Coating Technique ◽  
Slot Die Coating ◽  
Short Processing Time ◽  
Slot Die

A nanogroove-guided slot-die coating technique has been developed to manipulate the alignment of polymer chains within a short processing time.

PREPARATION OF Sm0.2Ce0.8O1.9-X BUFFER BY REEL-TO-REEL SLOT-DIE COATING

2013 ◽  
Vol 27 (15) ◽  
pp. 1362019 ◽  
Author(s):  
MING LEI ◽  
XIFENG PAN ◽  
XISHENG YANG ◽  
WENTAO WANG ◽  
FENG YANG ◽  
...  
Keyword(s):  
Release Rate ◽  
Chemical Solution Deposition ◽  
Coated Conductors ◽  
Chemical Solution ◽  
Axis Orientation ◽  
Solution Deposition ◽  
Coating Technique ◽  
Slot Die Coating ◽  
Slot Die ◽  
Moving Speed

Bi-axially textured Sm 0.2 Ce 0.8 O 1.9-x (SCO) single buffer tape with the length of 110 cm and the thickness of 150 nm, has been prepared on textured NiW(200) alloy substrate by using the polymer assisted chemical solution deposition (PACSD) method combined with slot-die coating technique for REBCO coated conductors. Smooth, uniform and crack-free SCO tape with sharp (200) c-axis orientation and high texture has been obtained by controlling the viscosity of solution, the moving speed of tape and the release rate of solution, bi-lateral texture of tape has been more than 90%, the FWHM obtained from ω-scan and φ-scan on the center of the tape are 5.08° and 4.64°, respectively.

Slot-Die Coating: A New Preparation Method for Direct Methanol Fuel Cells Catalyst Layers

2013 ◽  
Vol 10 (4) ◽  
Author(s):  
Andreas Glüsen ◽  
Martin Müller ◽  
Detlef Stolten
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Direct Methanol Fuel Cells ◽  
Homogeneous Layer ◽  
Coating Technique ◽  
Slot Die Coating ◽  
Catalyst Layers ◽  
Slot Die ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Manufacturing of catalyst layers is one of the key processing steps in making membrane electrode assemblies (MEAs) for direct methanol fuel cells (DMFCs). The catalyst ink, which usually contains catalysts, ionomers, solvents, and additives, is generally applied to the substrate by a wet-coating technique. Established coating techniques which are used for manufacturing catalyst layers for fuel cells are knife-coating, screen-printing, and spraying. Slot-die coating is also an established coating technique, but not currently used for making fuel cell electrodes. For each coating technique the properties of the catalyst layer will depend on the properties of the coating technique and the properties of the substrate. Also each coating technique requires the catalyst ink to be adjusted to its specific rheological requirements. In this study, slot-die coating is developed as a new method for the continuous manufacture of catalyst layers for direct methanol fuel cells. The rheological demands for a homogeneous layer thickness are studied with model inks and a suitable catalyst ink is prepared. With this ink, decal electrodes are fabricated and CCM-type MEAs are made. Fuel cell tests show that the performance of the slot-die coated electrodes is comparable to electrodes made by knife-coating.

SLOT-DIE-COATED ZINC TIN OXIDE FILM FOR CARBON-BASED METHYLAMMONIUM-FREE PEROVSKITE SOLAR CELLS

2021 ◽  
pp. 2150109
Author(s):  
NUTCHA KHAMBUNKOED ◽  
DUANGMANEE WONGRATANAPHISAN ◽  
ATCHARAWON GARDCHAREON ◽  
NARUPON CHATTRAPIBAN ◽  
SAOWALAK HOMNAN ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Tin Oxide ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Coating Technique ◽  
Slot Die Coating ◽  
Slot Die ◽  
Zinc Tin Oxide ◽  
Carbon Based

At the laboratory scale, the spin coating technique is commonly used for depositing an electron transporting layer (ETL) in perovskite solar cells (PSCs). However, this technique is unsuitable for scaling up production. To enable large-scale deposition, slot-die coating, — a promising scalable technique and low operational cost processing, — has been proposed for depositing thin and uniform films across large areas. In this work, scalable slot-die coating processes of amorphous zinc tin oxide (ZTO) as ETLs are illustrated for carbon-based methylammonium-free PSCs. The amorphous ZTO was selected because of its excellent optical and electronic properties such as high electrical conductivity, high electron mobility, and high transparency. Slot-die-coated ZTO thin films were prepared from a proprietary homemade slot-die setup on a 3-axis computer numerical control (CNC) platform. Various thicknesses of ZTO thin films were utilized by changing the speed of the slot-die head. The device using slot-die-coated ZTO films with a film thickness of 48[Formula: see text]nm was found to exhibit the best device maximum power conversion efficiency of 9.92%, which is comparable to that of the device using spin-coated ZTO film. This work demonstrates the potential of the slot-die coating technique to replace the conventional spin-coating method in the fabrication of high efficiency and scalable PSCs.

scholarly journals One‐step slot‐die coating deposition of wide‐bandgap perovskite absorber for highly efficient solar cells

Solar RRL ◽  
2021 ◽  
Author(s):  
Sophie Bernard ◽  
Sébastien Jutteau ◽  
Salim Mejaouri ◽  
Stefania Cacovich ◽  
Iwan Zimmerman ◽  
...  
Keyword(s):  
Solar Cells ◽  
Wide Bandgap ◽  
Coating Deposition ◽  
Slot Die Coating ◽  
Highly Efficient ◽  
Slot Die ◽  
One Step

A one-step roll-to-roll process of stable AgNW/PEDOT:PSS solution using imidazole as a mild base for highly conductive and transparent films: optimizations and mechanisms

2015 ◽  
Vol 3 (22) ◽  
pp. 5859-5868 ◽  
Author(s):  
Seyul Kim ◽  
So Yeon Kim ◽  
Moon Hyun Chung ◽  
Jeonghun Kim ◽  
Jung Hyun Kim
Keyword(s):  
Optical Properties ◽  
Electrical And Optical Properties ◽  
Transparent Films ◽  
Slot Die Coating ◽  
Roll To Roll ◽  
Transparent Conducting ◽  
Slot Die ◽  
Coating Method ◽  
One Step

An AgNW/PEDOT:PSS coated, transparent, conducting, roll film (460 mm in width × 20 m in length) with good electrical and optical properties was produced using the roll-to-roll slot-die coating method.

scholarly journals Transmittance Control of a Water-Repellent-Coated Layer on a Tensioned Web in a Roll-to-Roll Slot-Die Coating System

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 4003
Author(s):  
Seongyong Kim ◽  
Minho Jo ◽  
Jongsu Lee ◽  
Changwoo Lee
Keyword(s):  
Contact Angle ◽  
Solar Cells ◽  
Control Method ◽  
Dominant Factor ◽  
Water Repellent ◽  
Process Conditions ◽  
Slot Die Coating ◽  
Roll To Roll ◽  
Slot Die ◽  
Transparent Water

Solar cells are important alternatives to fossil fuels for energy generation in today’s world, where the demand for alternative, renewable sources of energy is increasing. However, solar cells, which are installed outdoors, are susceptible to pollution by environmental factors. A solution to overcome this limitation involves coating solar cell surfaces with functional coatings. In this study, we propose a transmittance control method for a tensioned web in a roll-to-roll, transparent, water-repellent film coating. First, we analyzed the effects of process conditions on the transmittance and contact angle of the transparent water-repellent film during roll-to-roll slot-die coating. It was confirmed that the tension was the most dominant factor, followed by the coating gap. Through the tension control, the transmittance was changed by 3.27%, and the contact angle of the DI water was changed by 17.7°. In addition, it was confirmed that the transmittance was changed by 0.8% and the contact angle of DI water by 3.9° via the coating gap control. Based on these results, a transmittance prediction model was developed according to the tension and coating gap, and was then verified experimentally. Finally, a water-repellent film with a high transmittance of 89.77% was obtained using this model.

Analytical models for predicting penetration depth during slot die coating onto porous media

AIChE Journal ◽  
2014 ◽  
Vol 60 (12) ◽  
pp. 4241-4252 ◽  
Author(s):  
Xiaoyu Ding ◽  
Joshua Prince Ebin ◽  
Tequila A.L. Harris ◽  
Zhuo Li ◽  
Thomas F. Fuller
Keyword(s):  
Porous Media ◽  
Penetration Depth ◽  
Analytical Models ◽  
Slot Die Coating ◽  
Slot Die
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