Patent ID: 6750662
Filing Date: 2004-06-15
Classification: H01L,H02S,Y02E,Y02P

Abstract:
Apparatus for localizing production errors in a photovoltaic element (1) which is formed substantially by a semiconductor substrate (5, 6, 7) in the form of a wafer, on opposite main surfaces of which are arranged electrical conductors (2, 3, 8) for transporting electrical charge carriers, comprisingat least one first electrode (23) in electrical contact with a first main surface of said substrate and displaceable over said substrate, a second electrode (31) to be arranged in electrical contact with a conductor (8) on the second main surface, adjusting means (27) for adjusting a bias over the electrical conductors (2, 3, 8) on the opposite main surfaces of said substrate, characterized by displacing means (24) for displacing the first electrode (23) over said first main surface in two mutually perpendicular directions, and voltage measuring means (25) for measuring the voltage between the at least one first (23) and the second electrode (31) subject to the position of the first electrode (23) on said first main surface.