THE MANUFACTURING METHOD OF BACK CONTACT SOLAR CELLS

摘要

PURPOSE: A manufacturing method of back contact solar cells is provided to reduce production costs by performing an annealing process and a sintering process at the same time under hydrogen gas. CONSTITUTION: In a manufacturing method of back contact solar cells, a rear passivation layer having at least opening is formed on the rear side of a conductive silicon substrate(S410). A seed layer contacted with first and second conductive semiconductor areas through opening is formed on the rear passivation(S420). A first electrode paste and a second electrode paste are coated on the seed layer which is formed on opening(S430). A metal component making up the seed layer through a heat treatment and a Si compound layer are formed, and first and second electrode pastes are formed at the same time. A seed layer having no the first and second electrode layer is removed(S450).