ESTI SCAN FACILITY

This paper presents the multi-laser scan facility, set up at ESTI's la boratories for research and testing purposes of solar cells. The facil ity consists of two separate scanning systems, a high precision one fo r smaller devices and a large area one for any device up to module siz e, providing high spatial resolution maps of the short circuit current . Three inter-changeable lasers of different wavelengths have been cho sen to reach different penetration depths in the device under test, A fast data acquisition system allows the on-line visualisation of the r ecorded light beam induced current (LBIC). Standard products such as m ono-and polycrystalline cells, as well as newer technology PV-devices and modules of different sizes were chosen to show the capability of t he facility.