Organic photovoltaic component with encapsulation
View Patent ↗The invention concerns an organic photovoltaic component with a novel encapsulation, wherein the invention for the first time discloses packaging for organic solar cells that includes a low-cost film composite comprising a metal portion. The packaging meets high requirements, particularly with respect to high barrier properties against oxygen and water vapor encapsulation without or with only minimal adhesive joints, since the encapsulation can be welded/soldered to the substrate or the bottom electrode, integrated lead-through of electrical connections, including adhesive-bonded, soldered and/or welded connections.
1. A photovoltaic component, comprising:
an encapsulation, comprising:
a first electrically isolating portion;
a second electrically isolating portion;
a third electrically isolating portion;
a first metal portion between the first and second electrically isolating portions; and
a second metal portion between the first and second electrically isolating portions,
a substrate,
a bottom electrode,
at least one functional layer, and
a top electrode,
wherein:
the top electrode and the bottom electrode are between the substrate and the first electrically isolating portion of the encapsulation,
the top electrode and the bottom electrode are between the substrate and the second electrically isolating portion of the encapsulation,
the top electrode and the bottom electrode are between the substrate and the third electrically isolating portion of the encapsulation,
the encapsulation is welded, adhesive-bonded and/or soldered to the substrate or a bottom layer of the photovoltaic component,
the bottom electrode is electrically connected to the first metal portion,
the top electrode is electrically connected to the second metal portion,
the third electrically isolating portion electrically isolates the first metal portion from the second metal portion,
the encapsulation encapsulates the first and second electrodes and the at least one functional layer; and
the photovoltaic component is an organic photovoltaic component.
2. The photovoltaic component according to claim 1 , wherein the encapsulation is welded, adhesive-bonded and/or soldered to the substrate.
3. The photovoltaic component according to claim 1 , wherein a subregion of the encapsulation has an exposed metal region outside of the encapsulation for contacting.
4. The photovoltaic component according to claim 1 , wherein the encapsulation has a thickness of at most 200 microns.
5. The photovoltaic component according to claim 1 , wherein the component further comprises a protective layer.
6. The photovoltaic component according to claim 1 , wherein the encapsulation further comprises a getter material.
7. The photovoltaic component according to claim 1 , wherein the encapsulation comprises alternating layers of metal and synthetic material or glass.
8. The photovoltaic component of claim 1 , further comprising first and second electrical contacts, wherein the first electrical contact electrically connects the top electrode and the first metal portion, and the second electrical contact electrically connects the bottom electrode and the second metal portion.
9. The photovoltaic component according to claim 8 , wherein at least one member selected from the group consisting of the encapsulation, the first electrical contact and the second electrical contact comprises a low-temperature solder.
10. A photovoltaic component, comprising:
a photovoltaic cell, comprising:
a substrate;
a first electrode; and
a second electrode; and
an encapsulation comprising:
a first electrically isolating portion;
a second electrically isolating portion;
a third electrically isolating portion;
a first metal portion between the first and second electrically isolating-portions; and
a second metal portion between the first and second electrically isolating portions,
wherein:
the first electrode is electrically connected to the first metal portion the second electrode is electrically connected to the second metal portion,
the third electrically isolating portion electrically isolates the first metal portion from the second metal portion,
the first electrode and the second electrode are between the substrate and the first electrically isolating portion of the encapsulation,
the first electrode and the second electrode are between the substrate and the second electrically isolating portion of the encapsulation,
the first electrode and the second electrode are between the substrate and the third electrically isolating portion of the encapsulation, and
the encapsulation is tightly connected to the substrate or a bottom layer of the photovoltaic component.
11. The photovoltaic component of claim 10 , wherein the encapsulation is welded, adhesive-bonded and/or soldered to at least one component of the photovoltaic cell.
12. The photovoltaic component of claim 10 , wherein the electrically isolating portion comprises glass or a polymer.
13. The photovoltaic component of claim 12 , wherein alternating layers of the encapsulation comprise metal.
14. The photovoltaic component of claim 10 , wherein the encapsulation has a thickness of at most 200 microns.
15. The photovoltaic component of claim 10 , wherein the encapsulation has a thickness of at most 75 microns.
16. The photovoltaic component of claim 10 , wherein the encapsulation further comprises a getter material.
17. The photovoltaic component of claim 10 , wherein the encapsulation is welded, adhesive-bonded and/or soldered to the substrate or to a bottom layer of the photovoltaic component.
18. The photovoltaic component of claim 10 , further comprising first and second electrical contacts, wherein the first electrical contact electrically connects the first electrode and the first metal portion, and the second electrical contact electrically connects the second electrode and the second metal portion.
19. The photovoltaic component of claim 18 , wherein the first electrical contact comprises metal fibers, metal chips and/or other metal particles.
20. A photovoltaic component, comprising:
a substrate.
a first electrode;
at least one functional layer;
a second electrode; and
an encapsulation that encapsulates the first and second electrodes and the at least one functional layer, the encapsulation comprising:
a first electrically isolating portion;
a second electrically isolating portion;
a third electrically isolating portion;
a first metal portion between the first and second electrically isolating portions; and
a second metal portion between the first and second electrically isolating portions,
wherein:
the first electrode is electrically connected to the first metal portion,
the second electrode is electrically connected to the second metal portion,
the third electrically isolating portion electrically isolates the first metal portion from the second metal portion,
the first electrode and the second electrode are between the substrate and the first electrically isolating portion of the encapsulation,
the first electrode and the second electrode are between the substrate and the second electrically isolating portion of the encapsulation,
the first electrode and the second electrode are between the substrate and the third electrically isolating portion of the encapsulation, and
the photovoltaic component is an organic photovoltaic component.
21. The photovoltaic component of claim 20 , further comprising first and second contacts, wherein the first contact is electrically connected to the first electrode, and the second contact is electrically connected to the second electrode.