Metallic glass-coated materials for solar cell electrodes

Abstract

Metallic glass-coated materials in the form of particles and wires, and the use of metallic glass-coated particles and wires as solar cell electrodes are disclosed.

Description

technical field [0001] The present disclosure relates to metallic glass coated materials and the use of metallic glass coated materials as solar cell electrodes. The metallic glass coated material may be in the form of metallic glass coated copper wire, metallic glass coated copper particles or metallic glass coated silver particles. Background technique [0002] Solar cells are made of semiconductor materials that convert sunlight into electricity. Traditional silicon solar cells can be made from thin wafers, typically p-type silicon on a substrate (Si), with the cathode on the front or sun-facing side and the anode on the back. Alternatively, an n-type silicon wafer can be used with front side doping to provide a p-type emitter layer. A p-n junction can be fabricated by diffusing phosphorus (P) into a p-type silicon wafer. Anti-reflective coatings (ARCs) are typically applied on top of the solar cell fronts to prevent reflection losses of sunlight. The ARC may be a sil...

AI Technical Summary

Problems solved by technology

For large-area PERC solar cells, the quality and thickness of the thick-film aluminum metallization BSF may not be uniform and may result in higher surface recombination at the contact area

[0005] Other methods for forming backside interconnects involving localized contact openings and diffusions in separate steps are time consuming and expensive as multiple steps of masking and etching are required to obtain localized diffusion

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