CN102956828A

CN102956828A - New no-welding organic solar cell module connection method

Info

Publication number: CN102956828A
Application number: CN2011102542010A
Authority: CN
Inventors: 席曦; 李果华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2013-03-06

Abstract

The invention discloses a new no-welding organic solar cell module connection method which specifically comprises the following steps of: depositing an organic active layer and a related electrode modification layer on an anode substrate; and directly sticking two organic solar cells together based on the cathode of an organic solar cell prepared by directly using conductive adhesive (tape) instead of preparing a metal cathode by a common vacuum evaporation coating deposition method. The cathode of one cell can be stuck with the anode of the other cell to form series connection; or the cathodes of the two cells can be stuck together, and the anodes are stuck together to form parallel connection. Through a proper pressing and heating technology, the contact characteristic and stability between the cells and the joint are guaranteed. The solar cell module connected by the method avoids damage of a device in high-temperature welding; and meanwhile, a new connection method is provided for some adopted electrode materials such as ITO, ZnO and PEDOT:PSS and the unweldable materials such as Al and the like.

Description

A kind of organic photovoltaic cell assembly of exempting to weld connects new method

Technical field

The present invention relates to the assembly preparing technical field that organic photovoltaic cell connects, specifically, be exactly at the anode substrate organic active layer of deposition and related electrode decorative layer, do not adopt afterwards the deposition process of common vacuum vapor plating to prepare metallic cathode, but directly utilize conducting resinl (band) to prepare the negative electrode of organic photovoltaic cell, utilize simultaneously conducting resinl (band) other end of metal interconnection bar to be sticked in the anode place of another battery.Guarantee good interface contact and stability by the suitable pressurization of heating again.Utilize this method at first can exempt the vacuum evaporation coating film device that is usually used at present organic photovoltaic cell cell deposition metal electrode; Secondly can avoid the high temperature of welding procedure in the conventional footprint preparation to the destruction of device, the 3rd, used the electric conducting material that can not weld in a large number in the organic photovoltaic cell, such as ITO, ZnO, PEDOT:PSS and Al etc., can overcome this welding difficulty fully by this method of attachment of pasting, the method has reduced the complexity of technique, the preparation cost of device, the maintenance cost of equipment in a word; Improved production efficiency, for the from now on large-scale commercial applications production of organic photovoltaic cell lays the foundation.This technology can be used for various types of organic photovoltaic cells such as organic molecule solar cell, organic polymer solar cell simultaneously; Can be used for the organic photovoltaic cell of planar heterojunction structure and the various structures such as solar cell of bulk heterojunction structure; Can be used for the preparation of rigidity organic photovoltaic cell and flexible organic photovoltaic cell.Therefore the application of this technology of preparing has popularity.

Background technology

The solar cell photovoltaic power generation technology is widely used now.But organic photovoltaic cell is owing to the preparation of its low cost of manufacture, lightweight large tracts of land and have the advantage such as flexible and get most of the attention.The solar cell common metal is interconnected to form behind the assembly with battery and battery that just extensive commercialization uses.Conventional battery method of attachment is the interconnecting strip solder technology at present.This method is introduced in the organic photovoltaic cell connection, and welding high temperature wherein will produce larger destruction to organic photovoltaic cell, and many electrode materials such as ITO, ZnO, PEDOT:PSS and Al etc. are difficult to weld simultaneously.But the introducing of conducting resinl (band) but can address these problems, in the process of utilizing conducting resinl (band) preparation cell cathode, just can finish simultaneously the connection of battery, can greatly reduce the complex process degree like this, enhance productivity, be conducive to actual large-scale production.

Summary of the invention

The present invention's " a kind of organic photovoltaic cell assembly of exempting to weld connects new method ", with the solar module interconnection technique that breaks traditions, when preparing, also finished on the negative electrode that uses conducting resinl (band) to carry out device the connection work of battery, reduced the complexity of technique, reduced manufacturing cost, improved production efficiency, the high temperature when also having avoided welding is to the destruction of device, and the connectivity problem of difficult welding electrode material, for from now on large-scale production is laid a good foundation.

Solder technology is nearly all adopted in the method for attachment of traditional solar module.Be connected connection with high conductivity although this technology can be finished high strength, this technology is difficult to be applied in the connection of organic photovoltaic cell.Its main cause is: the high temperature when at first welding can destroy generations such as organic active layers; The electrode material that secondly most of organic photovoltaic cell uses all is the materials that are difficult to weld, and as such as ITO, ZnO, PEDOT:PSS and Al etc., therefore must seek battery interconnection technique more suitable and the organic photovoltaic cell assembly.Adopt conducting resinl (band) to paste the method for metal interconnection bar, can in the process of preparation organic photovoltaic cell negative electrode, finish simultaneously the connection of battery, effectively avoided welding procedure, also reduced the complex process degree and improved production efficiency simultaneously.At first prepare organic active layer and electrode modification layer in the organic photovoltaic cell according to conventional method, then paste conductive tape or be coated with in the specified cathode position of device and be covered with conducting resinl; Then also paste conductive tape or be coated with at the anode elongated end of another device and be covered with conducting resinl, covering metal interconnecting strip on conductive tape or conducting resinl again, thereby finish simultaneously the preparation of organic photovoltaic cell negative electrode and the connection of battery, at last the organic photovoltaic cell assembly that connects is carried out suitable pressurization and heat treated, get good contact characteristic and stability to guarantee electrode place and link.

In this class battery, the conductive materials in conducting resinl and the conductive tape can mix by the proportioning of different metal or conductive compound, and therefore the selection at conductive materials has popularity.Simultaneously, for the various cathode characteristic requirements of different components, this method can satisfy different needs by the variation of material and proportioning, so this technique is also high for the adaptability of different organic photovoltaic cells.

Guaranteeing that to organic active layer and electrode modification layer bonding material wherein or solvent can be selected arbitrarily or proportioning under the prerequisite without destruction.

Fig. 1 is two organic photovoltaic cell modular construction schematic diagrames that use conducting resinl (band) to connect.

Embodiment

At first identical with normal preparation technology, substrate is cleaned and preliminary treatment to transparent anode.Transparent substrates both can be outside the materials such as glass of rigidity, also can be flexible.And suprabasil electrically conducting transparent material can be the electrically conducting transparent materials such as ITO, ZnO, PEDOT:PSS.

Can prepare by the technique consistent with conventional method organic active layer and electrode modification layer afterwards.Here organic active layer both can be organic molecule such as metal phthalocyanine and fullerene etc., also can be organic polymer; Both can be the planar heterojunction junction structure on the structure, also can be the mixture heterojunction structure.The electrode modification layer can add according to actual conditions, both can target and anode all carry out electrode modification, also can only modify one of them electrode; Both can use the decorative layer of individual layer, also can use the decorative layer system of sandwich construction.

After the routine preparation is finished, select conducting resinl (band) according to the situation of practical devices, comprise mainly whether conductive materials wherein meets requirement on devices, and whether cohere material has destruction etc. to forward price.

Directly conductive tape is sticked in the specified cathode zone of device, and paste conductive tape at the anode elongated end of another piece battery; Perhaps conducting resinl is coated on the specified cathode zone of device, and at the anode elongated end coated with conductive glue of another piece battery; And then in conducting resinl or conductive tape place covering metal interconnecting strip, finish simultaneously the preparation of cell cathode and the connection of battery, by guaranteeing current transmission characteristic and the stability of negative electrode and junction after suitable pressurization and the heat treated, finally finish the preparation of organic photovoltaic cell and the connection of assembly at last.

Claims

1. for the present invention's " a kind of organic photovoltaic cell assembly of exempting to weld connects new method ", its series system as shown in drawings, wherein the structure of two organic photovoltaic cells comprises respectively: anode substrate, organic active layer, electrode modification layer and negative electrode.

2. organic photovoltaic cell assembly according to claim 1 method of attachment, wherein maximum characteristics are in the process of preparation cathode electrode, directly utilize conducting resinl (band) the metal interconnection bar to be sticked in the assigned address of device, form negative electrode, the other end of interconnecting strip utilizes conducting resinl (band) to stick in the anode part of another battery simultaneously, so the formation cascaded structure has also been finished the connection work of battery in the preparation cell cathode.

3. described organic photovoltaic cell according to claim 1, its organic active layer both can be organic molecule such as metal phthalocyanine and fullerene etc., also can be organic polymer; Both can be the planar heterojunction junction structure on the structure, also can be the mixture heterojunction structure.

4. described organic photovoltaic cell according to claim 1, its electrode modification layer also can become resilient coating, can add according to actual conditions, both can target and anode all carry out electrode modification, also can only modify one of them electrode; Both can use the decorative layer of individual layer, also can use the decorative layer system of sandwich construction.

5. described organic photovoltaic cell according to claim 1, its anode substrate should be the electrically conducting transparent material, such as ITO, ZnO, PEDOT:PSS etc., these conductive materials both can be deposited on the rigid material, such as glass etc.; Also can be deposited on the flexible material, such as flexiplast etc.

6. that is to say, anode substrate both can be rigidity also be flexible, its unique requirement is exactly electrically conducting transparent.

7. organic photovoltaic cell negative electrode and the junction that is consisted of by conducting resinl (band) or complexed metal interconnecting strip according to claim 2, in preparation process, can suitably pressurize as required or heat to improve the contact performance at conducting resinl (band) and interface, and can the time solvent evaporates in conducting resinl (band), guarantee its stability.

8. the organic photovoltaic cell negative electrode that is consisted of by conducting resinl (band) or complexed metal interconnecting strip according to claim 2, under the prerequisite that guarantees the desired negative electrode work function of device and stability, conductive materials in the conducting resinl (band) that uses can carry out various metals according to actual needs, even the mixing of the proportioning of conductive compound, thereby electric conducting material is selected extensively.

9. the organic photovoltaic cell negative electrode that is consisted of by conducting resinl (band) or complexed metal interconnecting strip according to claim 2, guaranteeing organic active layer and electrode modification layer under the prerequisite without destruction, bonding material wherein or solvent can be selected arbitrarily or proportioning, thereby the selection of adhesive is also had popularity.