Asulab S.a.

Vhf Technologies Sa

Diego Fischer

Eric Saurer

Yves Leterrier

Jan-Anders Manson

Alexandre Closset

Paul Velut

Pedro Torres

Ren&eacute; Viennet

Guillaume Cuvillier

Yvan Ziegler

Federico Galliano

Julien Verrey

According to the present invention there is provided a photovoltaic element, comprising a photovoltaic laminate; a structural substrate; wherein the photovoltaic element further comprises a plurality of hairs which are arranged to improve adhesion between said photovoltaic laminate and said structural substrate. There is also provided an intermediate product which is used in the manufacture of such a photovoltaic element and a method of manufacturing such a photovoltaic element.

Photovoltaic element

Apparatus for continuously producing flexible semiconductor devices through deposition of a plurality of semiconductor layers onto a moving flexible substrate by using Plasma Enhanced Chemical Vapor Deposition (PECVD) processing, where at least two successive layers are deposited in the same deposition chamber onto the substrate traveling in opposite directions. Computer program product directly loadable into the internal memory of a digital computer comprising software code portions for determining and controlling all the necessary parameters for the production of flexible semi-conductor devices in a such apparatus when said computer program product is run on a computer. Roll-to-roll method for producing flexible semiconductor devices, wherein a plurality of semiconductor layers are deposited in the same deposition chamber onto a flexible substrate moving in opposite directions. Flexible semiconductor device produced with said method, where the penetration rate of one semiconductor layer into its neighboring layer is remarkably low.

Apparatus and method for the production of flexible semiconductor devices

There is described a colored photovoltaic cell ( ) with a semiconductor, preferably silicon, which has high efficiency and a pleasing colored appearance, allowing it to be used as a dial for a watch or another electronic apparatus powered by the cell. The cell includes a reflective metal substrate ( ) serving as the bottom electrode, a stack of hydrogenated amorphous silicon layers forming p-i-n junctions ( ), and a transparent top electrode ( ). The latter may be coated with a layer ( ) of slightly diffusing lacquer, which may be colorless or colored. The respective thicknesses e of the top electrode and e of the silicon are combined as a function of the refractive indices of the materials so as to produce an interferential reflection in a predetermined reflection spectrum.

Photovoltaic cell having a colored appearance, particularly for a watch dial

The invention concerns a dial, in particular for a timepiece, formed of a solar cell including a substrate, at least one plurality of superposed layers defining at least one n-i-p or p-i-n element and a conductive layer forming a first electrode arranged to be exposed to luminous radiation, characterised in that said electrode is formed of a partially reflective metal layer.

Dial formed of a solar cell in particular for a timepiece

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Neuchâtel, Switzerland

Diego Fischer