Solar cell front side silver paste doped with modified graphene and preparation method thereof
AssigneeNantong T-Sun New Energy Co., Ltd.
InventorPeng Zhu
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Abstract
A solar cell front side silver paste doped with modified graphene and its preparation method are disclosed. The solar cell front side silver paste doped with modified graphene comprises by weight 0.1-5 parts of modified graphene, 88-91 parts of silver powder, 5-15 parts of organic binder, 1-5 parts of organic solvent, 1-3 parts of glass powder, wherein the modified graphene is a surface modified graphene. A solar cell front side silver paste is developed, which is screen printed on a crystalline silicon wafer, sintered at a high temperature, penetrates the SiNx passivation layer in the crystalline silicon wafer, and thus forms a good ohmic contact.
Claims5
A solar cell front side silver paste doped with modified graphene, comprising:
- 0.1-5 parts by weight of modified graphene,
- 88-91 parts by weight of silver powder,
- 5-15 parts by weight of organic binder,
- 1-5 parts by weight of a first organic solvent, and
- 1-3 parts by weight of glass powder,
- wherein the surface modified graphene is graphene with a surface modified by one or more surface modifiers selected from the group consisting of aluminate coupling agent, and zircoaluminate coupling agent;
- and
- wherein the surface modified graphene comprises 85-99 parts by weight of graphene and 1-15 parts by weight of the one or more surface modifiers.
Dependencies are inferred from the claim text.