E.i. Dupont De Nemours and Company

Hiroki Kojo

Takuya Konno

Hisashi Matsuno

Takashi Kitagaki

Masakatsu Kuroki

A method for manufacturing a solar cell electrode, comprising the steps of: (a) applying a conductive paste for bus electrode to a wafer in order to form a bus electrode pattern; (b) depositing onto the wafer a photocurable conductive paste for finger electrode from a discharge slot of a dispenser nozzle to thereby form an uncured finger electrode pattern on the wafer, wherein the nozzle moves parallel to the wafer; and (c) curing the uncured finger electrode pattern by exposing the uncured finger electrode pattern to UV light either after forming the uncured finger electrode pattern on the wafer in the step (b), or concurrent with the step (b).

Method for manufacturing solar cell electrode

In a paste for a solar cell light-receiving surface electrode including silver particles, glass frit, resin binder, and thinner, silver particles with a specific surface of 0.20-0.60 m/g are used as the silver particles. The silver particles are preferably included at 80 mass % or more to the total amount of silver particles being included in the paste.

Paste for solar cell electrode and solar cell

The invention is directed to a thermosetting electroconductive paste for forming electroconductive bumps at predetermined locations on at least one circuit layer that is laminated to an insulating layer. Upon lamination the electroconductive bumps penetrate the insulating layer forming an electrical connection to a second circuit layer. The paste comprises, based on total composition, 80 to 90 wt % electroconductive powders comprising at least a first and second electroconductive metal powder of which packing densities are in the range of 20% or less of the average density (sp. gr.) of metal for the first powder and 20 to 40% of the average density (sp. gr.) of metal for the second powder; and 10 to 20 wt % epoxy resin, curing agent, and solvent.

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Tochigi, Japan

Hiroki Kojo