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Process for manufacturing a solar cell foil using a temporary substrate

A technology of solar cells and temporary substrates, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve problems such as short circuits

Inactive Publication Date: 2006-08-30
AKZO NOBEL NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem is that by retaining the temporary substrate, a short circuit can occur between the two isolated parts of the TCO layer

Method used

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  • Process for manufacturing a solar cell foil using a temporary substrate
  • Process for manufacturing a solar cell foil using a temporary substrate
  • Process for manufacturing a solar cell foil using a temporary substrate

Examples

Experimental program
Comparison scheme
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no. 3 example

[0066] A third embodiment of the method according to the invention comprises the following steps:

[0067] provide an etchable temporary substrate;

[0068] applying a transparent conductive oxide (TCO) front electrode on said temporary substrate;

[0069] applying a photovoltaic layer (PV layer) on said TCO layer and providing grooves through said PV layer up to said TCO layer or through said TCO layer up to said temporary substrate;

[0070] A back electrode layer is applied on the PV layer and in the groove in such a way that the back electrode is interconnected to the front electrode inside the groove, while the The back electrodes are electrically insulated from each other;

[0071] apply a permanent carrier;

[0072] In any one of the above steps, providing a resist on the non-TCO side of the temporary substrate at the interconnect location;

[0073] selectively removing said temporary substrate not covered with resist; and

[0074] Grooves are provided through the ...

no. 4 example

[0077] A fourth embodiment of the present invention includes the following steps:

[0078] provide an etchable temporary substrate;

[0079] applying a transparent conductive oxide (TCO) front electrode on said temporary substrate;

[0080]Applying a photovoltaic layer (PV layer) on the TCO and providing grooves through the PV layer and the TCO up to the temporary substrate, filling the grooves with insulating material, optionally applying a cap at the same time , and, if necessary, apply insulating strips and pass through the PV layer until the TCO establishes a conductive connection (precursor);

[0081] applying a back electrode on said PV layer;

[0082] grooves are provided in the back electrode up to the PV layer, or if present, up to the insulating strip;

[0083] Optionally apply a permanent carrier;

[0084] In any of the above steps, providing a resist on the non-TCO side of the temporary substrate at the interconnect location; and

[0085] The temporary substra...

no. 5 example

[0088] A fifth embodiment of the present invention includes the following steps:

[0089] a. Provide a temporary substrate;

[0090] b. Applying a transparent conductive oxide (TCO);

[0091] c. Applying a photovoltaic layer (PV layer) on said TCO;

[0092] d. Applying one or two insulating strips on the PV layer, if required;

[0093] e. applying a backside electrode on said PV layer and, if present, on said insulating strip;

[0094] f. Repairing a shunt in said backside electrode, if necessary, if an interconnection has not been established;

[0095] g. applying grooves in the back electrode up to the PV layer, or if present, up to the insulating strip;

[0096] h. Apply a permanent carrier if desired;

[0097] i. In any one of the above steps, applying a resist on the non-TCO side of the temporary substrate at the location of the interconnects;

[0098] j. selectively removing said temporary substrate not covered with resist;

[0099] k. providing grooves from the T...

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PUM

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Abstract

The invention pertains to a process for manufacturing a solar cell foil comprising the steps of: providing an etchable temporary substrate, applying a front electrode of a transparent conductive oxide (TCO) onto the temporary substrate, applying a photovoltaic layer onto the TCO layer, applying a back electrode layer, applying a permanent carrier, ensuring that the front electrode and the back electrode are electrically connected in an interconnect to establish a series connection, the front and the back electrode each being interrupted by front and back groove, respectively, at different sides of the interconnect, in any one of the preceding steps providing an etch resist on the non-TCO side of the temporary substrate at least at the location of the interconnect, and at least not at the entire location of the front groove, selectively removing the temporary substrate where it is not covered with etch resist. The process of the invention provides a cap of a protective material on the interconnect, leading to a solar cell foil with improved properties.

Description

technical field [0001] The present invention relates to a method of manufacturing a solar cell using a temporary substrate. The present invention also relates to the solar cell sheet thus obtained. Background technique [0002] A solar cell sheet, also known as a photovoltaic sheet, generally includes a carrier and a photovoltaic (PV) layer, wherein the photovoltaic layer consists of a front electrode (on the front side of the sheet) and a back electrode (on the back side of the sheet) comprising a transparent conductive oxide (TCO). ) is formed of semiconductor material disposed between. The front electrode is transparent, enabling incident light to reach the semiconductor material, where the incident radiation is converted into electrical energy. In this way, light can be used to generate electricity, which provides an interesting alternative to fossil fuels or nuclear energy, for example. [0003] WO 98 / 13882 and WO 99 / 49483 describe a method of manufacturing a photovo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/142H01L31/0392H01L31/18
CPCH01L31/1896H01L27/1423Y02E10/50H01L31/0392H01L31/046H01L31/0465H01L31/03923H01L31/03925Y02E10/541Y02P70/50H01L31/042H01L31/18
Inventor G·C·杜贝尔达姆
Owner AKZO NOBEL NV