Improvement of electrical properties of printed ITO thin films by heat-treatment conditions

2011 ◽  
Vol 11 (1) ◽  
pp. S202-S205 ◽  
Author(s):  
Sung-Jei Hong ◽  
Jong-Woong Kim ◽  
Jeong In Han
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Electrical Properties ◽  
Treatment Conditions ◽  
Ito Thin Films

LiNiO2 Thin Films Fabricated by Diffusion of Li on Ni Tapes

2007 ◽  
Vol 336-338 ◽  
pp. 505-508
Author(s):  
Cheol Jin Kim ◽  
In Sup Ahn ◽  
Kwon Koo Cho ◽  
Sung Gap Lee ◽  
Jun Ki Chung
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Grain Size ◽  
Sol Gel ◽  
Surface Oxidation ◽  
Cold Isostatic Pressing ◽  
Tube Furnace ◽  
Treatment Conditions ◽  
Average Grain Size ◽  
Cold Rolling And Annealing

LiNiO2 thin films for the application of cathode of the rechargeable battery were fabricated by Li ion diffusion on the surface oxidized NiO layer. Bi-axially textured Ni-tapes with 50 ~ 80 μm thickness were fabricated using cold rolling and annealing of Ni-rod prepared by cold isostatic pressing of Ni powder. Surface oxidation of Ni-tapes were conducted using tube furnace or line-focused infrared heater at 700 °C for 150 sec in flowing oxygen atmosphere, resulted in NiO layer with thickness of 400 and 800 μm, respectively. After Li was deposited on the NiO layer by thermal evaporation, LiNiO2 was formed by Li diffusion through the NiO layer during subsequent heat treatment using IR heater with various heat treatment conditions. IR-heating resulted in the smoother surface and finer grain size of NiO and LiNiO2 layer compared to the tube-furnace heating. The average grain size of LiNiO2 layer was 0.5~1 μm, which is much smaller than that of sol-gel processed LiNiO2. The reacted LiNiO2 region showed homogeneous composition throughout the thickness and did not show any noticeable defects frequently found in the solid state reacted LiNiO2, but crack and delamination between the reacted LiNiO2 and Ni occurred as the reaction time increased above 4hrs.

Effect of Heat Treatment on Electrical Properties of Polycrystalline CuInSe2 Thin Films Prepared by Two Methods

1994 ◽  
Vol 37-38 ◽  
pp. 521-526 ◽  
Author(s):  
N. Agli ◽  
M. Abbaci ◽  
A. Maasmi ◽  
N. Benslim ◽  
L. Mahdjoubi ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Electrical Properties

Evaluation of Composites Containing Hollow Ni/Fe-Co Fibers on Near-Field Electromagnetic Wave Absorbing Properties

2010 ◽  
Vol 123-125 ◽  
pp. 1223-1226 ◽  
Author(s):  
Jin Woo Yi ◽  
Sang Bok Lee ◽  
Jin Bong Kim ◽  
Sang Kwan Lee ◽  
Ki Hyeon Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Near Field ◽  
Hollow Structure ◽  
Substrate Material ◽  
Strip Line ◽  
Metal Powders ◽  
Polymeric Thin Films ◽  
Treatment Conditions ◽  
Electroless Metal Plating

In order to develop an effective near-field electromagnetic (EM) wave absorber, we have fabricated polymeric thin films including hollow metallic microfibers. Hydrolyzed polymer micro fibers (~2.5 ㎛) were used as a substrate material for the electroless metal plating. Nickel and subsequent Fe-Co metal layers were coated on the surface of activated polymer fibers and then heat treatment for the hollow structure as well as the densification of metallic layers was performed under the Argon atmosphere. Unlike conventional particulate or flaky metal powders, these fibers can play a significant role in elevating the magnetic property of polymer films, resulting in the increased efficiency of EM absorbing properties. In addition, their hollow structure can also lower their apparent density. SEM and EDS analysis were carried out to verify the morphology and metal compositions. Polymeric thin films containing hollow Ni/Fe-Co micro fibers were prepared to investigate the effect of metal compositions, filler distribution and heat treatment conditions on not only the near-field absorbing performance, but also magnetic properties such as permeability and magnetization. For the measurement of near-field EM absorbance in the frequency range of ~6GHz, micro strip line and network analyzer were used.

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