High efficiency local back electrode aluminum paste for crystalline silicon solar cells and its application in PERC cells
AssigneeNantong T-Sun New Energy Co., Ltd.
InventorPeng Zhu
Life of this patent
Estimating the term…
Abstract
A high-efficiency back electrode local aluminum paste crystalline silicon solar cell is composed of the following components proportioned to weights: 70-85 of parts powder, 1-30 parts of organic carrier, 0.1-10 parts of inorganic binder, 0.1-1 parts of auxiliary conductive additives. The aluminum paste is mainly used to manufacture the passivated emitter and back electrode of silicon solar cell with dot or linear contact on rear surface. PERC aluminum paste printed on the passivated film of the silicon wafer with dot-opening or linear-opening is dried and sintered.
Claims8
A high efficiency back electrode local aluminum paste for crystalline silicon solar cells comprising the following components proportioned to weights:
- 70-85 parts for aluminum powder,
- 1-30 parts for organic carrier,
- 0.1-10 parts for inorganic binder, and
- 0.1-1 parts for auxiliary conductive additive including graphene.
A high efficiency back electrode local aluminum paste for crystalline silicon solar cells comprising the following components proportioned by weight:
- 70-85 parts for aluminum powder,
- 1-30 parts for organic carrier,
- 0.1-10 parts for inorganic binder, and
- 0.1-1 parts for auxiliary conductive additive including graphene
- wherein the organic carrier comprises a mixture of a macromolecule polymer and an organic solvent;
- wherein the macromolecule polymer is proportioned as 1-30%, and includes vinyl acetate acrylate cellulose, cellulose acetate butyrate, or combinations thereof;
- and
- wherein the organic solvent includes alcohol ester 12, butyl carbitol, or combinations thereof.
Dependencies are inferred from the claim text.