Method for producing electric contacts on a semiconductor component

US8273596B2 · kind B2 · utility

Assignee

• SCHOTT SOLAR AG · DE

Inventors

• Henning Nagel · Untergruppenbach, DE
• Wilfried Schmidt · Mössingen, DE
• Ingo Schwirtlich · Miltenberg, DE
• Dieter Franke · Munich, DE

Key dates

• Filing date: May 17, 2010
• Grant date: Sep 25, 2012
• Expiry date: Feb 9, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/50
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

Process for producing strip-shaped and/or point-shaped electrically conducting contacts on a semiconductor component like a solar cell, includes the steps of applying a moist material forming the contacts in a desired striplike and/or point-like arrangement on at least one exterior surface of the semiconductor component; drying the moist material by heating the semiconductor component to a temperature T1 and keeping the semiconductor element at temperature T1 over a time t1; sintering the dried material by heating the semiconductor component to a temperature T2 and keeping the semiconductor component at temperature T2 over a time t2; cooling the semiconductor component to a temperature T3 that is equal or roughly equal to room temperature, and keeping the semiconductor component at temperature T3 over a time T3; cooling the semiconductor component to a temperature T4 with T4≦−35° C. and keeping the semiconductor component at temperature T4 over a time T4; and heating the semiconductor component to room temperature.