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US 11,901,466 B2Granted
Photovoltaic cell and a method for manufacturing the same
AssigneeTechnische Universiteit Eindhoven
InventorsWilhelmus Mathijs Marie Kessels, Lachlan Edward Black
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Abstract
A photovoltaic cell includes a silicon substrate having two opposite main surfaces. A first main surface of the two main surfaces is covered with a passivation layer stack, including a POx- and Al-including-layer covering the first main surface, and a capping layer which covers the POx- and Al-including-layer. A method for manufacturing a photovoltaic cell is also disclosed.
Claims22
A photovoltaic cell comprising:
- a silicon substrate having two opposite main surfaces,
- wherein a first main surface of the two main surfaces is covered with a passivation layer stack, comprising:
- a POx- and Al-comprising-layer applied directly to the first main surface;
- and
- a capping layer structure covering the PO, and Al-comprising-layer,
- wherein the POx- and Al-comprising-layer is a mixed AlPxOy-film, and a ratio between the atomic percentage of phosphorus and phosphorus+aluminum (P/(P+Al)) in the POx- and Al-comprising-layer is at least 0.6 to less than 1.
3 more elements
A method for manufacturing a photovoltaic cell, the method comprising the steps of:
- providing a silicon substrate having two opposite main surfaces;
- applying a POx- and Al-comprising-layer directly on a first main surface of the two opposite main surfaces of the silicon substrate;
- and
- applying a capping layer structure on top of the PO, and Al-comprising-layer to cover the POx- and Al-comprising-layer,
- wherein POx- and Al-comprising-layer is a mixed AlPxOy-film, and a the ratio between the atomic percentage of phosphorus and phosphorus+aluminum (P/(P+Al)) in the POx- and Al-comprising-layer is from at least 0.6 to less than 1.
2 more elements
Dependencies are inferred from the claim text.