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US 12,672,418 B2Granted
Strong oxide transport layer with clusters and gap fill layer
AssigneeSwift Solar Inc.
InventorsTomas Leijtens, Giles Eperon, Daniel Martinez
Life of this patent
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Abstract
Transport layers with clusters and a gap fill layer are described. In an embodiment, a solar cell includes a hole transport layer, a perovskite absorber layer and an electron transport layer. In such an embodiment, the electron transport layer includes clusters and a gap fill layer to improve the overall cohesion and mechanical strength of the transport layer while also maintaining good electrical performance.
Claims19
A solar cell comprising:
- a substrate;
- a first transport layer over the substrate;
- an absorber layer over the first transport layer;
- and
- a second transport layer over the absorber layer;
- wherein the second transport layer comprises fullerene-containing transport clusters and an alumina gap fill layer that is grown between the fullerene-containing transport clusters and over a portion of the fullerene-containing transport clusters such that the alumina gap fill layer is thicker between the fullerene-containing transport clusters than over the fullerene-containing transport clusters.
3 more elements
A method for processing a solar cell comprising:
- forming a first transport layer over a substrate;
- forming an absorber layer over the first transport layer;
- and
- forming a second transport layer over the absorber layer, wherein forming the second transport layer includes:
- depositing a fullerene-containing transport material on a top surface of the absorber layer, the fullerene-containing transport material forming fullerene-containing transport clusters along the top surface of the absorber layer;
- and
- growing an alumina gap fill layer between the fullerene-containing transport clusters and over a portion of the fullerene-containing transport clusters such that the alumina gap fill layer is thicker between the fullerene-containing transport clusters than over the fullerene-containing transport clusters.
4 more elements
Dependencies are inferred from the claim text.