Flexible perovskite solar cells and fabrication thereof
AssigneeCity University of Hong Kong
InventorsZonglong Zhu, Danpeng Gao, Bo Li
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Abstract
An ammonium acetate selected from the group of pentylammonium acetate, phenylethylammonium acetate, 2-([1,1′-biphenyl]-4-yl) ethan-1-amine acetate, butanammonium acetate, hexylammonium acetate, octylammonium acetate, phenylbutanammonium acetate, and any combination thereof, is used to modify a perovskite layer in a perovskite solar cell. A perovskite solar cell includes a perovskite layer and an interface modification layer that is in contact with the perovskite layer and includes at least one ammonium acetate provided herein. A method of preparing the inverted perovskite solar cell.
Claims20
A perovskite solar cell comprising
- a perovskite layer;
- and
- an interface modification layer that is in contact with the perovskite layer and comprises at least one ammonium acetate, wherein the at least one ammonium acetate comprises pentylammonium acetate.
A method of preparing an inverted perovskite solar cell comprising the steps of:
- providing a flexible substrate layer;
- providing a transparent electrode on the flexible substrate layer;
- coating a hole transport layer onto the substrate layer;
- coating a perovskite layer;
- coating an electron transport layer onto the perovskite layer;
- coating a metal electrode on the electron transport layer;
- wherein, an interface modification layer is coated onto the hole transport layer, prior to coating the perovskite layer, or is coated on both sides of the perovskite layer;
- and
- wherein the interface modification layer comprises at least one ammonium acetate, wherein the at least one ammonium acetate comprises pentylammonium acetate.
A method for passivating a perovskite layer in an inverted flexible perovskite solar cell, comprising providing an interface modification layer comprising an ammonium acetate on the bottom side or both sides of the inverted flexible perovskite layer, wherein the ammonium acetate comprises pentylammonium acetate.
Dependencies are inferred from the claim text.