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Transparent conducting film based on zinc oxide

A technology of transparent conductive film and base layer, applied in the direction of oxide conductors, conductive layers on insulating carriers, circuits, etc., can solve problems such as low environmental stability, and achieve the effect of avoiding maintenance and operating costs

Active Publication Date: 2019-03-15
UNIV DU LUXEMBOURG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it can be said that the main limiting factor for the industrial application of nominally undoped ZnO layers is their limited lower environmental stability

Method used

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  • Transparent conducting film based on zinc oxide
  • Transparent conducting film based on zinc oxide
  • Transparent conducting film based on zinc oxide

Examples

Experimental program
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Embodiment

[0065] use Figure 6 The two RF power delivery schemes presented in , produced prototypes of transparent conductive films under the deposition conditions described above.

[0066] During the fabrication of the corresponding film structures, the main RF discharge on the target was under pure Ar at a rate of 1.3·10 -1 Pa working pressure operation, power delivery kept at 2.75Wcm -2 . In the first processing step, the secondary discharge excited over the substrate by means of a second RF power supply is also kept constant at P b =15·10 -3 Wcm -2 . Deposition was performed on soda-lime glass substrates. The resulting ZnO-based layer has a thickness of 770 nm and a resistivity of 1.4 10 -3 Ω cm. It should be noted that this resistivity is the same as that of an AZO film of comparable thickness and prepared under the same conditions. However, lower resistivity values ​​can be achieved under optimized deposition conditions (eg, higher substrate temperatures). The plasmon wa...

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Abstract

The invention relates to a transparent conducting film comprising a nominally undoped conducting ZnO base layer covered with a ZnO cover. The ZnO base layer has a preferred crystallographic orientation, whereas the ZnO cover comprises one or more ZnO sublayers, of which at least one has a crystallographically randomly oriented or amorphous structure or a preferred crystallographic orientation different from the preferred crystallographic orientation of the base layer. The invention further relates to a process for the manufacture of such a transparent conducting film.

Description

technical field [0001] The present invention relates generally to transparent conductive films, particularly ZnO-based transparent conductive oxide (TCO) films. The TCO film according to the present invention can be used in various applications, for example, in electronic or semiconductor devices (such as liquid crystal displays, touch screens, light emitting diodes, etc.), photovoltaics (such as solar panels), and the like. Background technique [0002] Transparent conducting oxide (TCO) films are components of many semiconductor devices such as light emitting diodes, touch displays and thin film solar cells. ZnO-based TCO films represent an expensive In 2 o 3 : An affordable alternative to Sn (indium tin oxide, abbreviation: ITO) films. The most common variation is Al-doped ZnO (ZnO:Al), which is highly conductive, highly transparent in the visible (VIS) spectral region, and partially transparent in the near-infrared (NIR) spectral region. A description of the electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224C23C16/40H01L31/18
CPCH01L31/022483H01L31/1884C23C14/086C23C14/345C23C14/3492H01B1/08H01B5/14H01L31/0322
Inventor 梅特·哈拉苏珊娜·西奔特力特菲利普·戴尔
Owner UNIV DU LUXEMBOURG