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Electrically conducting transparent film and its preparing process

A transparent conductive film and thin film technology, applied to conductive layers, circuits, electrical components and other directions on insulating carriers, can solve problems such as complex preparation processes

Inactive Publication Date: 2005-03-02
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the preparation process is more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: Preparation of In by vacuum reaction evaporation method 2 o 3 :X transparent conductive film, the specific steps are as follows:

[0009] 1. Exhaust the vacuum chamber, the pressure is lower than 1×10 -2 Pa, at the same time, the glass substrate is heated by an electric heater in the vacuum chamber, and the substrate temperature is controlled in the range of 200°C-400°C;

[0010] 2. Fill the vacuum chamber with oxygen, adjust the main valve of the vacuum chamber, and control the partial pressure of oxygen in the vacuum chamber at 7×10 -2 Pa-1.3×10 -1 Pa range;

[0011] 3. Start heating to evaporate indium (In), and form In on the heated glass substrate 2 o 3 film. The film acts as an anti-diffusion barrier. When its thickness reaches 30-50nm, start to evaporate XO at the same time 3 , for doping, to control the XO 3 The amount of incorporation to form In 2 o 3 :X transparent conductive film. During the film formation process, the film deposition ...

Embodiment 2

[0013] Example 2: Preparation of In by reactive magnetron sputtering 2 o 3 :X transparent conductive film, the specific steps are as follows:

[0014] 1. Preparation of target for sputtering

[0015] The target for sputtering can be an oxide target or a metal sputtering target.

[0016] (1) Mix indium oxide with molybdenum oxide or tungsten oxide in a certain proportion (by weight, molybdenum oxide or tungsten oxide accounts for 3-5%), heat and press in the mold, and pass reducing gas to make oxide target.

[0017] (2) Prepare metal materials for targeting. According to the sputtering rate of different materials, indium and X are made into sputtering targets. Control the content of X (accounting for 3-5%).

[0018] In order to prepare the anti-diffusion barrier layer, a pure indium target needs to be prepared additionally to prepare In 2 o 3 film.

[0019] 2. Preparation of In by reactive magnetron sputtering 2 o 3 :X film process conditions are as follows:

[0020...

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Abstract

An electrically conductive transparent film is prepared from indium oxide as main oxide and 6-valence Mo or W as doped element through coating the glass substrate with an indium oxide layer as diffusion barrier and doping. Its advantages are better electric conductivity and simple preparing process.

Description

technical field [0001] The invention relates to a preparation method of a transparent conductive film. Background technique [0002] Transparent conductive film is a material that is transparent to visible light and has good conductivity. and so on have a wide range of applications. At present, the most widely used transparent conductive film in the world is tin-doped indium oxide film (In 2 o 3 : Sn referred to as ITO). This is a doped semiconductor material. For the host indium oxide (In 2 o 3 ), indium is trivalent, while the dopant element tin (Sn) is tetravalent. Therefore, replacing an indium atom with a tin atom provides a conduction electron. This kind of transparent conductive film has strict requirements on doping elements. In addition to the above-mentioned differences in atomic valence, it is also required that the corresponding ionic radius cannot be larger than the ionic radius to be replaced, the electrons must have high mobility, and new insulating c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/08C23C14/22H01B5/14H01L31/00
Inventor 章壮健杨锡良陈华仙孟杨沈杰
Owner FUDAN UNIV