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AssigneePacific Solar Pty Limited
InventorsZhengrong Shi, Stuart Ross Wenham, Martin Andrew Green, Paul Alan Basore, Jing Jia Ji
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A thin film silicon solar cell is provided on a glass substrate, the glass having a textured surface, including larger scale surface features and smaller scale surface features. Over the surface is deposited a thin barrier layer which also serves as an anti-reflection coating. The barrier layer may be a silicon nitride layer for example and will be 70 nm±20% in order to best achieve its anti-reflection function. Over the barrier layer is formed an essentially conformal silicon film having a thickness which is less than the dimensions of the larger scale features of the glass surface and of a similar dimension to the smaller scale features of the glass surface.
A method of forming a light trapping structure in a thin film silicon solar cell formed on a glass substrate or superstrate, the method including the steps of:
A thin film photovoltaic device incorporating a light trapping structure, wherein the photovoltaic device is formed on a textured surface of a glass substrate or superstrate, the photovoltaic device comprising a thin silicon film into which is formed at least one pn photovoltaic junction, the thin silicon film being less than 10 μm thick and the texturing on the glass surface having random scale etching.
Dependencies are inferred from the claim text.