Abstract: The method of manufacturing a passivated solar cell comprises the steps of: (1) providing an electrically conductive region at a first side of a semiconductor substrate provided with a textured surface, which comprises dopant atoms of p-type conductivity, and particularly boron; (2) providing a passivation by applying a tunnelling dielectric layer and a polysilicon layer and carrying out an anneal so as to diffuse dopant atoms from the electrically conductive region into the polysilicon layer. A hydrogenated silicon nitride or silicon oxynitride layer may be present on top of the polysilicon layer. The resulting solar cell has a significantly increased lifetime of charge carriers and therewith enhanced open-circuit voltage.

Abstract: A method for manufacturing a photovoltaic cell from a substrate (2) having a front side (4), a back side (6) and an edge (8). A carrier selective contact structure (4a) of a first type is provided on at least a part of the front side (4). A stack (10) having a thin oxide layer covered by a polysilicon layer is applied, wherein the stack (10) is applied to the back side (6) and the front side (4) of the substrate (2), and possibly also on edge (8). The stack (10) of thin oxide layer and polysilicon layer on the front side (4) is then removed.

Abstract: The method of manufacturing of a solar cell comprises the steps of: providing a semiconductor substrate (100) comprising an electrically conductive region (11) extending at a first side thereof; and providing a tunnelling oxide (13) by thermal oxidation followed by a boron doped polysilicon LPCVD deposited layer on the second side of the semiconductor substrate. Herein, the provision of the doped polysilicon layer (20) comprises depositing a multilayer stack of first sublayers (21, 22, 23) of silicon and second sublayers (31, 32) of boron dopant in alternation, and subsequent annealing. Thereafter the solar cell is finalized with passivation layers on at least the first side and suitable metallization layers on the emitter and base regions.

Abstract: An organic electroluminescent device includes a substrate, a first electrode arranged on the substrate, and a functional organic layer arranged on the first electrode. The functional organic layer emits electromagnetic radiation. A second electrode is arranged on the functional organic layer. The functional organic layer includes at least one ionic component and one emitter material having a band gap. The emitter material is selected from the group of ionic transition metal complex, neutral transition metal complex, polymer emitter and combinations thereof. The organic electro-luminescent device is adapted to work in two modes, wherein a pre-biasing mode comprises applying a first voltage being a constant or pulsed value less than and/or equal to the band gap to the first and the second electrode.