Patent ID: 8664522
Filing Date: 2014-03-04
Classification: H01L,Y02E,Y02P

Abstract:
1. A thin film solar cell comprising the following layers deposited on a substrate: a) a microcrystalline p- or n-layer, b) an intermediate microcrystalline silicon i-layer having a thickness of 10 nm to 20 nm and a crystallinity of >0% and applied by a hot-wire chemical-vapor deposition (HWCVD) method on the microcrystalline p- or n-layer a), c) an additional i-layer of microcrystalline silicon, having a thickness of 0.5 μm to 2 μm and a crystallinity of >20% and which is formed by depositing on the intermediate microcrystalline silicon i-layer, by a plasma enhanced chemical vapor deposition (PECVD), a sputtering process, or a photo-CVD method whereby layers b) and c) together form an i-layer, and d) if a p-layer is present as the layer of step a), an n-layer, and if an n-layer is present as the layer of step a), a p-layer that is either microcrystalline or amorphous.