title: Experimental setup for camera-based measurements of electrically and optically stimulated luminescence of silicon solar cells and wafers.
abstract: We report in detail on the luminescence imaging setup developed within the last years in our laboratory. In this setup, the luminescence emission of silicon solar cells or silicon wafers is analyzed quantitatively. Charge carriers are excited electrically (electroluminescence) using a power supply for carrier injection or optically (photoluminescence) using a laser as illumination source. The luminescence emission arising from the radiative recombination of the stimulated charge carriers is measured spatially resolved using a camera. We give details of the various components including cameras, optical filters for electro- and photo-luminescence, the semiconductor laser and the four-quadrant power supply. We compare a silicon charged-coupled device (CCD) camera with a back-illuminated silicon CCD camera comprising an electron multiplier gain and a complementary metal oxide semiconductor indium gallium arsenide camera. For the detection of the luminescence emission of silicon we analyze the dominant noise sources along with the signal-to-noise ratio of all three cameras at different operation conditions.
authors: Institute for Solar Energy Research Hamelin (ISFH), Am Ohrberg 1, 31860 Emmerthal, Germany. hinken@isfh.de
authors: David
authors: D
authors: Hinken
authors: Carsten
authors: C
authors: Schinke
authors: Sandra
authors: S
authors: Herlufsen
authors: Arne
authors: A
authors: Schmidt
authors: Karsten
authors: K
authors: Bothe
authors: Rolf
authors: R
authors: Brendel