In order to treat solar cells (26) in an electroplating device (30), they can be inserted into a grid-like or tray-like picking-up device (11). They are thus mechanically held and electrical contact is made with them via contacts (24). Instead of individual solar cells (26), the picking-up devices (11) are moved with a large number of inserted solar cells through the electroplating device (30) for treatment. Electrical contact is in this case made with the solar cells (26) by means of the contacts (24) and the frame limbs (12, 14) on a projecting angle section (16) together with edge strips (17) of the pick-up. Contact rollers (42) rest on the edge strips and are connected to an electrical power source (44).