METHOD FOR PRODUCING A SOLAR CELL, SOLAR CELL PRODUCED BY THIS METHOD AND SUBSTRATE CARRIER

• Main Authors: WUENSCH, Frank, SONTAG, Detlef, SPERLICH, Hans-Peter, CITARELLA, Giuseppe, KOEHLER, Gunnar, MEHLICH, Heiko, KOENIG, Marcel, PAPET, Pierre
• Format: Patent
• Language: English
• Published: 19.09.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

A solar cell with a heterojunction is produced. A first amorphous nano- and/or microcrystalline semiconductor layer is formed on the front face of a crystalline semiconductor substrate to form front face emitter or a front face surface field layer. A second such layer is formed on the rear face of the substrate to form a rear face surface field layer or a rear face emitter. Electrically conductive, transparent front face and rear face electrode layers and a frontal metallic contact layer grid structure are formed. Surface selective frontal PECVD deposition forms an electrically non-conductive, transparent dielectric front face cover layer and with such a thickness to form a closed layer directly on deposition, without additional heat and/or chemical treatment, only on the areas surrounding the frontal contact layer grid structure but not on the frontal contact layer grid structure. Finally, a rear face metallization is formed.