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Polyimide metal laminate and solar cell

一种层压制品、太阳电池的技术，应用在金属层状产品、分层产品、涂层等方向，能够解决尺寸变化率没有得到考虑、聚酰亚胺膜不具有CIS太阳电池足够性能等问题

Inactive Publication Date: 2011-06-08
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the dimensional change rate of the polyimide film during temperature rise up to 300°C was considered, the dimensional change rate at elevated temperature (up to 500°C or higher) and during temperature fall was not obtained. consider
The polyimide film disclosed in Patent Document 3 may not have sufficient performance as a substrate for CIS solar cells

Method used

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  • Polyimide metal laminate and solar cell
  • Polyimide metal laminate and solar cell
  • Polyimide metal laminate and solar cell

Examples

Experimental program
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preparation example Construction

[0098] In the preparation of a self-supporting film, the heating temperature and heating time can be roughly determined. For example, a film of a polyimide precursor solution cast on a support is heated at 100 to 180° C. for about 3 to 60 minutes.

[0099] Substrates with smooth surfaces are suitable for use as supports. For example a stainless steel substrate or a stainless steel strip can be used as the support. Endless substrates such as endless belts are suitable for use in continuous production.

[0100] In order to make the self-supporting film have sufficient mechanical properties, the coupling agent solution can be more uniformly and more easily applied to the surface of the self-supporting film; and after imidization, it will not be in the prepared polyimide film For the purpose of observing bubbles, flaws, cracks, cracks and fissures, the weight loss after heating of the self-supporting film is preferably in the range of 20% by weight to 50% by weight, and the weig...

Embodiment

[0161] The present invention will be described in more detail with reference to the following examples. However, the present invention is not limited to the following examples.

[0162] The physical properties of the polyimide film (dimension change rate and thermal expansion coefficient between 25°C and 500°C, and weight loss rate after heat treatment at 500°C for 20 minutes) were measured as described above. The polyimide film 25-500 degreeC dimensional change rate and thermal expansion coefficient were measured using the thermomechanical analyzer TMA / SS6100 by SII technology company.

[0163] The occurrence of cracks in the molybdenum-laminated polyimide film was evaluated as follows.

[0164] The laminate in which the molybdenum-layer was formed on one or both sides of the polyimide film was heated at 500° C. for 2.5 minutes, and then cooled to room temperature. The surface of the molybdenum layer was observed with an optical microscope to evaluate the presence or absenc...

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Abstract

A CIS solar cell is produced by using a polyimide metal laminate having a polyimide film and a metal layer which is arranged on the film and to serve as an electrode. The metal layer to serve as an electrode is formed on a surface (surface B) of a self-supporting film, the surface being in contact with a supporting body during production of the self-supporting film.

Description

technical field [0001] The present invention relates to polyimide-metal laminates for CIS solar cells. The present invention also relates to a CIS solar cell comprising a laminate and having a high conversion efficiency. Background technique [0002] In recent years, including chalcopyrite semiconductor layers such as CuInSe 2 layer and the CuInSe 2 Solid solution of Ga in, such as Cu(In, Ga)Se 2 The solar cell (CIS solar cell) has attracted a lot of attention as a solar cell with high photoelectric conversion efficiency. A CIS solar cell generally includes a substrate, a back electrode layer, a chalcopyrite semiconductor layer as a light absorbing layer, a buffer layer, a transparent electrode layer, and an extraction electrode in the following order. [0003] Traditionally, glass (soda lime glass) is used as the substrate of CIS solar cells, and molybdenum (Mo) is used as the back electrode formed on the substrate. In addition, a CIS solar cell including a flexible fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18H01L31/04B32B15/088
CPCH01L31/0322C08J5/18H01L31/03928Y02E10/50Y02E10/541Y02P70/50B29C41/24B29K2079/08
Inventor 下川裕人上木户健松本直行川岸健山口裕章
Owner UBE IND LTD