An apparatus (1) for the irradiation of solar cells (2) is described. The apparatus (1) contains at least 400 solid-state radiation sources in a matrix-like extensive arrangement for emitting monochromatic light in a spectral region of 880 nm, preferably for silicon cells. ...http://www.google.ca/patents/US20040020529?utm_source=gb-gplus-sharePatent US20040020529 - Device for testing solar cells
