Abstract: The invention relates to a multicrystalline laser-crystallized silicon thin layer solar cell deposited on a glass substrate (a), which is configured for illuminating from the substrate side, and to a production method for the cell. Said solar cell comprises a laser-crystallized multicrystalline silicon layer (b1, b2), whose lower layer region (b1), which is situated on the substrate (a) and provided as a nucleation layer and, at the same time, as a lower transparent electrode, is p-doped (alternatively, n-doped). The silicon layer's second layer region (b2), which faces away from the substrate is p-doped (alternatively, n-doped) less than the nucleation layer and serves as an absorber layer. The edge lengths of the crystallites in the multicrystalline layer (b1, b2) are longer than the layer is thick.

Abstract: A miniaturized multi-chamber thermocycler provides a thermocycler which is easy to handle, and permits the treatment of a great number of samples of small sample volumes at high temperature changing rates and at low heating powers. A sample receptacle body manufactured in micro-system technics provides a plurality of sample chambers which are embodied such that at least one of the sample chamber walls of the sample chamber which constitutes the sample chamber base is an efficient heat conductor and also of low mass. Said sample chambers are coupled to a coupling body, serving as heat sink, established via at least one poor heat conducting bridge which, with respect to its dimensioning and/or material selection is such that its specific heat conductance .lambda. is smaller 5 W/K.degree..multidot.m.