Transparent conductive Al-doped ZnO films for liquid crystal displays

Oh, Byeong Yun; Jeong, Min Chang; Moon, Tae Hyoung; Lee, Woong; Myoung, Jae Min; Hwang, Jeoung Yeon; Seo, Dae Shik

doi:10.1063/1.2206417

Cited by 230 publications

(92 citation statements)

References 16 publications

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“…ZnO is a direct band gap semiconductor of energy E g = 3.37 eV, and exciton binding energy of ~ 60 meV at room temperature. So, it can be used as a transparent electrode in solar cells manufacturing 1 , in liquid crystal display (LCD) 2 and in light emitting diode (LED) 3 . In addition, ZnO is useful in many potential applications and can be exploited as a thin film transistor (TFT) 4,5 , and surge protection element in electronic circuitry [6][7][8] , UV photodetector 9 , transparent conductor 10 , piezoelectric transducer and surface acoustic wave device 11 .…”

Section: Introductionmentioning

confidence: 99%

Oxygen Effect on Structural and Optical Properties of ZnO Thin Films Deposited by RF Magnetron Sputtering

2017

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ZnO thin films with wurtzite structure have been grown on Si (100) and glass substrates using radio frequency (rf) magnetron sputtering at room temperature. The ZnO thin films have been characterised by XRD. The (002) orientation is observed at zero Oxygen flow after the (100) developed with increasing oxygen ratio. Usually, this orientation (100) is difficult to obtain. The thickness of ZnO films was confirmed by cross-section SEM, and their stoichiometry was measured by Energy Dispersive X-ray Spectroscopy (EDX) and Rutherford backscattering spectroscopy (RBS). The optical band gaps have been determined using UV spectra and found to be varied from 3.24 to 3.29 eV as a function of the oxygen ratio. Moreover, photoluminescence (PL) spectra showed more defects at higher oxygen flow. The crystalline quality of the deposited film degrades with oxygen enhancements.

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Section: Introductionmentioning

confidence: 99%

Oxygen Effect on Structural and Optical Properties of ZnO Thin Films Deposited by RF Magnetron Sputtering

2017

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“…In addition, the easy formation and propagation of cracks in the brittle ITO film have been critical drawbacks [11,12]. For these reasons, some thin transparent conducting film (TCF) materials such as metal nanowire networks, conducting polymers, carbon nanotubes, graphene, and several conducting oxides have been suggested as promising alternatives to ITO films [13][14][15][16][17][18][19][20][21]. Other promising candidates for the ITO film are oxide-metal-oxide (OMO) multilayer films, viewed to be advantageous due to their low sheet resistance, high transparency, and flexibility.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Ag Layer Embedded in NIZO Layers as Transparent Conducting Electrodes for Liquid Crystal Displays

Oh¹,

Heo²

2016

Transactions on Electrical and Electronic Materials

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In the present work, a Ni-doped indium zinc oxide (NIZO) film and its multilayers with Ag layers were investigated as transparent conducting electrodes for liquid crystal display (LCD) applications, as a substitute for indium tin oxide (ITO) electrodes. By interposing the Ag layer between the NIZO layers, the loss of the optical transmittance occurred; however, the Ag layer brought enhancement of electrical sheet resistance to the NIZO/Ag/NIZO multilayer electrode. The twisted nematic cell based on the NIZO/Ag/NIZO multilayer electrode exhibited superior electrooptical characteristics than those based on single NIZO electrode and was competitive compared to those based on the conventional ITO electrode. An LCD-based NIZO/Ag/NIZO multilayer electrode may allow new approaches to conventional ITO electrodes in display technology.

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“…High electrical conductivity and high optical transparency are desired for transparent conductive films (TCFs) that are widely used in touch screens, liquid crystal displays, and solar cells (Bae et al, 2010;Feng et al, 2010;Madaria et al, 2011;Oh et al, 2006;Wang et al, 2008). For the commercial available TCFs, the conducting material is indium tin oxide (ITO), which makes a good compromise between conductivity and transparency.…”

Section: Introductionmentioning

confidence: 99%

Highly stretchable and transparent conductive film made of Pt nanocoil web

Zhao

Shitamura

Muraoka

2017

Mechanical Engineering Journal

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High electrical conductivity and high optical transparency are desired for transparent conductive films (TCFs). The currently used conducting material, indium tin oxide (ITO), is high cost owing to the lack of indium source. In addition, its brittleness has limited its applications in flexible electronic devices. Although the alternative materials, such as carbon nanotube and metallic nanowires, have been extensively studied, there are still some issues needed to be addressed for their practical uses. This research reports a highly stretchable TCF, which is made by transferring a Pt nanocoil (NC) web to a transparent silicone rubber membrane. The fabricated Pt TCF exhibited a high optical transmittance over 90% within visible region. The stretching behaviors of a single-layered freestanding Pt NC web and a Pt TCF were investigated and the fracture mechanism was discussed. As a result, the respective fracture strain of freestanding Pt NC web and Pt TCF was approximately 20% and 15%, both of which were higher than that of ITO film. The decreased fracture strain of Pt TCF was attributed to a possible reason as follows. Compared to the freestanding Pt NC web, the in-plane deformation of Pt NCs in the TCF was restricted by the substrate layer, and hence the Pt TCF fractured more easily than the freestanding Pt NC web.

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Transparent conductive Al-doped ZnO films for liquid crystal displays

Cited by 230 publications

References 16 publications

Oxygen Effect on Structural and Optical Properties of ZnO Thin Films Deposited by RF Magnetron Sputtering

Oxygen Effect on Structural and Optical Properties of ZnO Thin Films Deposited by RF Magnetron Sputtering

Effects of the Ag Layer Embedded in NIZO Layers as Transparent Conducting Electrodes for Liquid Crystal Displays

Highly stretchable and transparent conductive film made of Pt nanocoil web

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