Dispersion of Glass Powder and Characterization of Thick Film for AC Plasma Display Panels

2007 ◽  
Vol 124-126 ◽  
pp. 355-358
Author(s):  
Kwan Wuk Park ◽  
Jin Seok Lee ◽  
Hee Jin Lim ◽  
Sung Churl Choi
Keyword(s):  
Screen Printing ◽  
Phosphate Ester ◽  
Organic Additives ◽  
Forming Process ◽  
Screen Printing Method ◽  
Thermal Gravimetric Analyzer ◽  
Plasma Display Panels ◽  
Plasma Display ◽  
Practical Forming

Bi-based glass pastes were prepared in the mixed organic solvents (α-terpineol and texanol) with different kinds and concentrations of organic dispersant such as fish oil , phosphate ester and poly methyl methacrylate (PMMA). The rheological stability of glass pastes was characterized by using a rheometer and adsorption behavior of organic additives for the glass powders was carried out by using a thermal gravimetric analyzer (TGA).The Bi-based glass pastes exhibited the most stable rheological behavior at an addition of phosphate ester of 0.5 in mass %, due to the steric repulsive force acting on the surface of glass powers with adsorbing the organic additives. This study allowed significant delay of the sedimentation time and suppressed generation of micropores during practical forming process by a screen printing method.

Comparison of Transmittance of Pb-Free Transparent Dielectric Made by Screen Printer and Die Coater

2005 ◽  
Vol 486-487 ◽  
pp. 325-328 ◽  
Author(s):  
Myung-Lyoung Cha ◽  
Jae Sam Jeon ◽  
Hyung Sun Kim
Keyword(s):  
Screen Printing ◽  
Thick Films ◽  
Glass Frit ◽  
Forming Process ◽  
Screen Printing Method ◽  
Sio2 Glass ◽  
Transparent Dielectric ◽  
Plasma Display ◽  
Printing Method ◽  
Free Glass

For the application of transparent dielectric layer of PDP (Plasma display panel), a Pb-free glass, ZnO-B2O3-SiO2 glass, was measured for thermal and optical properties after forming thick films. Glass frit of different size (d50=1.7, 4.3㎛) and different thickness film forming process (a die coater and a screen printer) were applied to a transparent dielectric. The coated layer was determined for pore contents, size, and transmittance. As a result, the screen printing method produced non-uniform surface and increased pores with multilayer. The die coater method, however, produced more uniform surface and less pore content compared to the screen printing method. Thus it shows that the increase of pore size and contents has detrimental effects on the transmittance of thick films made by a lead-free glass, ZnO-B2O3-SiO2 glass.

Preparation and Characterization of Copper-Doped Tin Oxide Nanopowder via Hydrothermal Route

2006 ◽  
Vol 45 ◽  
pp. 200-204
Author(s):  
Dong Xiang Zhou ◽  
Huan Liu ◽  
Shu Ping Gong
Keyword(s):  
Tin Oxide ◽  
Screen Printing ◽  
High Sensitivity ◽  
Average Crystallite Size ◽  
Test Results ◽  
Hydrothermal Route ◽  
Screen Printing Method ◽  
Sensor Fabrication ◽  
Printing Method

Copper-doped tin oxide nanopowder has been synthesized via the hydrothermal route, in which pure metallic Sn, diluted nitric acid solution and Cu(NO3)2 are used as the starting materials. The hydrothermal treatment at about 200°C for 10 h results in rutile crystalline SnO2 particles with a narrow size distribution typically in the range of 3~6 nm. The average crystallite size of 5 wt% CuO-doped SnO2 particles remains smaller than 12.5 nm even after annealing at 800°C. The evaluation of the sensitive properties of the synthesized powder with various amount of CuO doping is conducted on the thick-film samples fabricated by screen-printing method. The high sensitivity toward H2S as shown by the sensor test results show the possibility of using this material for gas sensor fabrication.

scholarly journals Effect of thickness Type on Transparent TiO2 as the Working Electrode of Dye sensitized Solar Cell (DSSC) for Solar Windows Applications

2017 ◽  
Vol 6 (02) ◽  
pp. 73 ◽  
Author(s):  
Nadya Aruma Dewi ◽  
Fahru Nurosyid ◽  
Agus Supriyanto ◽  
Risa Suryana
Keyword(s):  
Screen Printing ◽  
Test Results ◽  
Electrode Thickness ◽  
Screen Printing Method ◽  
Dye Sensitized ◽  
Maximum Value ◽  
Dye Solar Cells ◽  
Uv Visible ◽  
Windows Applications

<p align="center"> </p><p>Senditized Dye Solar Cells (DSSC) consist of photoelectrode, dye, electrolyte and counter electrode which is one of the photochemical electric cells. In this article will discuss the influence of the thickness of the electrode on the electrical properties. Electrodes made by screen printing method. Screen by type T-49. TiO<sub>2</sub> deposited on the FTO variation of the number of layers to obtain a thickness of 1, 2, 3 and 4. DSSC tested thickness by Screen Electron Microscopy (SEM), absorbance test by UV Visible Lambda 25 and characterization of current and voltage test by Keithley Measurenment 2602A. The test results showed the thickness of the TiO<sub>2</sub> electrode thickness (1.5 ± 0.2) μm, (2.9 ± 0.5) μm, (3.5 ± 0.6) μm, and (4.5 ± 0.8 ) μm. Based on the test results absorbance maximum value contained in thickness (4.5 ± 0.8) μm having a dye adsorbed at most and have the highest efficiency  2.41%.</p><p> </p>

Synthesis and characterization of fast-decaying bluish green phosphors of Tb3+-doped CaSi2O2N2 for 2D/3D plasma display panels

2012 ◽  
Vol 132 (6) ◽  
pp. 1540-1543 ◽  
Author(s):  
LiXun Yang ◽  
Xin Xu ◽  
LuYuan Hao ◽  
XiuFang Yang ◽  
Simeon Agathopoulos
Keyword(s):  
Synthesis And Characterization ◽  
Plasma Display Panels ◽  
Bluish Green ◽  
Plasma Display

scholarly journals Modifying Precursor Solutions to Obtain Screen-Printable Inks for Tungsten Oxides Electrochromic Film Preparation

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 872
Author(s):  
Kaiyue Guo ◽  
Guanguang Zhang ◽  
Yujie Long ◽  
Honglong Ning ◽  
Zhuohui Xu ◽  
...  
Keyword(s):  
Screen Printing ◽  
Low Cost ◽  
Wide Bandgap ◽  
Electrochromic Device ◽  
Electrochromic Devices ◽  
Tungsten Oxides ◽  
Screen Printing Method ◽  
Coloration Efficiency ◽  
Wide Bandgap Semiconductor

Tungsten trioxide (WO3) is used to prepare the important electrochromic layer of the electrochromic device as a wide bandgap semiconductor material. In this study, WO3 electrochromic film was successfully prepared by screen printing. To modify the thixotropy and wettability of the ink, polyvinyl alcohol (PVA) and 2-perfluoroalkyl ethanol (FSO) were added in the ammonium meta-tungstate (AMT) solution. We found that the PVA additive could improve the dynamic viscosity of the solution and modify the uniformity of the film. 2-Perfluoroalkyl ethanol (FSO) could lower the surface tension and increase the wettability of the AMT solution on the substrate. By observing the morphology of the printed films, the ink formulas for screen printing were selected. We found the annealing process could help remove PVA. Through characterization of electrochromic performance, it was found that the best performing device had 42.57% modulation and 93.25 cm2·C−1 coloration efficiency (CE) for 600 nm light. This study showed great potential in the preparation of WO3 electrochromic devices by a low-cost screen-printing method.

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