MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617073289 A) filed by Ce Cell Engineering Gmbh on June 12, 2026, for Wafer-Based Solar Cell Comprising Passivated Contacts, And Method For Manufacturing Such A Wafer-Based Solar Cell.

Inventors include Krassowski, Eve; and Stenzel, Florian.

The application for the patent was published on July 10, 2026, under issue no. 28/2026.

Abstract: The invention relates to a wafer-based solar cell comprising a semiconductor wafer that is made of semiconductor material and has a semiconductor wafer surface, at least one p-doped region, and at least one n-doped region, wherein the p-doped region and/or the n- doped region are each electrically contacted, via opening regions and current contact regions located therein, with a metal electrode structure attached to the semiconductor wafer surface, and each metal electrode structure covers an electrode coverage area on the semiconductor wafer surface, and wherein the semiconductor wafer surface of the wafer-based solar cell has a passivation layer arranged between the semiconductor material and the metal electrode structure, and this passivation layer has a double layer consisting of a polycristalline silicon layer and an SiO2 layer, and wherein the current contact regions are at least in part guided into the polycristalline silicon layer. The aim of the invention is to provide a wafer-based solar cell, wherein the wafer-based solar cell has a reduced electrical contact resistance in order to increase the efficiency of the wafer-based solar cell. This aim is achieved by: providing, at least in some sections, through-contact regions (9) in at least some of the current contact regions (5), in which through- contact regions (9) the SiO2 layer is penetrated; and forming, at the through-contact region (9), a metal-silicon mixture in a mixing region at the transition between the metal electrode structure (4), the polycrystalline silicon layer (6b), the SiO2 layer (6a), and the semiconductor material.

Disclaimer: Curated by HT Syndication.