METHOD FOR PRODUCING A SOLAR CELL HAVING A TWO-STAGE DOPING

PURPOSE: A method for manufacturing a solar cell including two doping steps is provided to protect a protective doping region from an etching media by doping a part of a substrate and applying a sacrificial structure on the protective doping region. CONSTITUTION: One part of a solar cell substrate(1...

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Bibliographische Detailangaben
Hauptverfasser:	MELNYK IHOR, HOLBIG EVA MARIA, KELLER STEFFEN, SCHLOSSER REINHOLD, SCHMIDT MICHAEL, FATH PETER, KRUEMBERG DR.JENS
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PURPOSE: A method for manufacturing a solar cell including two doping steps is provided to protect a protective doping region from an etching media by doping a part of a substrate and applying a sacrificial structure on the protective doping region. CONSTITUTION: One part of a solar cell substrate(1) is strongly doped. A protective region(8) is formed. The non-protective doping region(17) of the solar cell substrate is etched using an etching media. A sacrificial structure(7) is applied on the protective region in order to protect a doping region. The sacrificial structure is composed of glass which is inorganic material. The melting point of the sacrificial structure is between 600 and 800 degree Celsius.