Electrical and Optical Properties of Transparent Conductive Films with Ag-Nd Alloy

Shimada, Koji; Koike, Katsuhiko; Fukuda, Shin

doi:10.3131/jvsj.46.214

Cited by 4 publications

(3 citation statements)

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“…Ag alloys such as Ag-Zn and Ag-Nd alloys, which have higher oxygen resistivities than pure-Ag thin films, have been developed. [22][23][24][25][26][27][28] Another critical issue for Ag-based anode electrodes is their high material cost. Recently, increasing attention has been paid for large displays such as 4K OLED TVs.…”

Section: Introductionmentioning

confidence: 99%

Low driving voltage indium–tin oxide/Al–Ni–Cu–La anode electrodes for top-emission organic light-emitting diodes

Nishiyama

Kugimiya

Okuno

et al. 2017

Jpn. J. Appl. Phys.

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We have developed indium–tin oxide (ITO)/Al–Ni–Cu–La anode electrodes for cost-effective large top-emission organic light-emitting diode (OLED) displays. By combining alkaline cleaning with thermal annealing, the driving voltage of the OLED devices containing Al–Ni–Cu–La thin films was effectively reduced, becoming comparable to that for conventional Ag alloy thin films. Cross-sectional transmission electron microscopy (XTEM) observation revealed that the grains in the Al matrix and the precipitates on the Al–Ni–Cu–La surface were small, resulting in a low driving voltage and a high optical reflectivity. The Al–Ni–Cu–La thin films overcome the oxidation issues that cause an increase in contact resistance due to the formation of AlOx between the Al alloy and the ITO thin films, and could replace conventional anode electrodes having an ITO/Ag/ITO structure.

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Section: Introductionmentioning

confidence: 99%

Low driving voltage indium–tin oxide/Al–Ni–Cu–La anode electrodes for top-emission organic light-emitting diodes

Nishiyama

Kugimiya

Okuno

et al. 2017

Jpn. J. Appl. Phys.

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“…Al–Nd alloy thin films are used in flat panel displays, high‐resolution TFT–LCDs, production of improved electrolytic capacitors, etc. Ag–Nd alloys are used as reflective film and multilayer transparent conductive films . Until now, less numbers of researches have been carried out on the rapid solidification of neodymium ‐ rich side of Nd–Al and Nd–Ag binary alloys.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Rapidly Solidified Nd–Al and Nd–Ag Eutectic Alloys in Drop Tube

et al. 2014

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Nd-14.2 at%Al and Nd-20.0 at%Ag eutectic alloys were containerlessly solidified in an 8 m drop tube. The droplets were undercooled during the free fall in about 1 s under reduced gravity condition in He atmosphere. The cooling rates at the solidification temperature were computed as a function of droplet size by making use of heat balance calculations. They were ranging between 40 Â 10 3 and 0.8 Â 10 3 K s À1 for droplets in size range of 100-900 mm diameters. Nusselt, Reynolds, and Prandtl numbers of the droplets were calculated. Microstructures of the alloys were analyzed and eutectic spacings were determined. Microhardnesses of the droplets with different sizes were measured to reveal a dependence on the cooling rates with which the droplets are solidified.

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“…2 The multilayer sputter coatings with the silver layer are very sensitive to the surrounding atmosphere. [3][4][5] For example, when the coatings are exposed to the atmosphere, we found discolored spots on the multilayer sputter coatings, possibly caused by the migration of silver atoms in the silver layers.…”

Section: Introductionmentioning

confidence: 99%

Improvement of corrosion resistance of transparent conductive multilayer coating consisting of silver layers and transparent metal oxide layers

Koike

Yamazaki

Okamura

et al. 2007

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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In situ fabrication of blue ceramic coatings on wrought Al Alloy 2024 by plasma electrolytic oxidation J. Vac. Sci. Technol. A 30, 021302 (2012) Influence of substrate temperature and bias voltage on properties of chromium nitride thin films deposited by cylindrical cathodic arc deposition J. Vac. Sci. Technol. A 29, 051515 (2011) Ultrathin TiSiN overcoat protection layer for magnetic media J. Vac. Sci. Technol. A 29, 051502 (2011) High-corrosion-resistant Al2O3 passivation-film formation by selective oxidation on austenitic stainless steel containing Al J. Vac. Sci. Technol. A 29, 021002 (2011) Low-energy ion bombardment to tailor the interfacial and mechanical properties of polycrystalline 3C-silicon carbide J.An optical filter for plasma display panel ͑PDP͒ requires an electromagnetic shield with very high ability. The authors investigated a transparent conductive multilayer coating consisting of silver ͑Ag͒ layers and transparent metal oxide layers. The durability of the multilayer sputter coating, including the silver layer, is very sensitive to the surrounding atmosphere. For example, after an exposure test they found discolored points on the multilayer sputter coatings, possibly caused by migration of silver atoms in the silver layers. In their investigation, they modified the top surface of the multilayer sputter coatings with transition metals to improve the corrosion resistance of the multilayer coating. Specifically, they deposited transition metals 0.5-2 nm thick on the top surface of the multilayer coatings by sputtering. They chose indium tin oxide ͑ITO͒ as the transparent metal oxide. They applied the multilayer sputter coatings of seven layers to a polyethylene terephthalate ͑PET͒ film substrate. A cross-sectional structure of the film with the multilayer coatings is PET film/ITO/Ag/ITO/Ag/ITO/Ag/ITO. They evaluated the corrosion resistance of the films by a salt-water immersion test. In the test, they immersed the film with multilayer coatings into salt water, and then evaluated the appearance, transmittance, and electrical resistance of the multilayer coatings. They investigated several transition metals as the modifying material, and found that titanium and tantalum drastically improved the resistance of the multilayer coatings to the salt-water exposure without a significant decline in transmittance. They also investigated the relation between elapsed time after deposition of the modifying materials and resistance to the salt water. Furthermore, they investigated the effects of a heat treatment and an oxide plasma treatment on resistance to the salt water.

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Electrical and Optical Properties of Transparent Conductive Films with Ag-Nd Alloy

Cited by 4 publications

References 0 publications

Low driving voltage indium–tin oxide/Al–Ni–Cu–La anode electrodes for top-emission organic light-emitting diodes

Low driving voltage indium–tin oxide/Al–Ni–Cu–La anode electrodes for top-emission organic light-emitting diodes

Characterization of Rapidly Solidified Nd–Al and Nd–Ag Eutectic Alloys in Drop Tube

Improvement of corrosion resistance of transparent conductive multilayer coating consisting of silver layers and transparent metal oxide layers

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