Abstract: A method a photovoltaic cell assembly comprising a first and second photovoltaic cell is manufactured using an electrically conducting connection strip having a first and second lip integrally formed in or extending from the connection strip, a width of the first and second lip being smaller than a width of the strip. The lips are preferably bonded to the contact pads on a side of the cell at which the connection strip is located. Ultrasonic bonding of the first and second lip to the contact pads of the first and second photo-voltaic cell respectively.

Abstract: Substrate such as a turbine blade provided with a coating, which consists of a material that forms a sealing oxide skin on heating. This material is a ferrous metal aluminium alloy or a ferrous metal chromium alloy, wherein the oxide skin comprises aluminium oxide or chromium oxide. In order to optimise the adhesion between the skin and the coating, it is proposed that a metal from the platinum group such as platinum or palladium be added in an amount of 0.1-0.5% (m/m). It has been found that better adhesion is obtained with this method and the detrimental effects of sodium, potassium or calcium are counteracted.