Abstract: A method for producing a solar cell, including the following steps: a) providing a substrate having a front side and a back side in a deposition apparatus, and b) coating the substrate in situ with two layers, including b1) oxidizing, by exposing the substrate to an oxygen-containing gas and a first plasma, to create an oxide layer and b2) subsequently depositing a silicon layer or SiC layer by exposure to a gas containing silicon, an optional gas containing carbon and a second plasma, wherein step b) is carried out under vacuum in the deposition apparatus and the vacuum is maintained continuously during step b).

Abstract: A solar cell having a rear layer stack, wherein the rear layer stack has the following layer sequence: an AlOx layer, a first SiNx layer, a second SiNx layer, an SiOxNy layer, a third SiNx layer and at least one further layer, selected from the group consisting of SiOxNy, SiOx, AlOx, AINx and AlF. The invention further relates to a solar module comprising the solar cell, and a method of producing the solar cell, wherein the rear layer stack is deposited on a substrate in a tubular PECVD system with a boat as a substrate holder.

Abstract: An antireflection coating for a solar cell includes at least a first SiNx layer with a high refractive index and a second SiNx layer with a lower refractive index. An improved light coupling and a better passivation of solar cells and a more homogeneous and darker color impression may be achieved also in the laminated in solar module, while at the same time being insensitive to typical process variations.

Abstract: A solar cell includes a semiconductor substrate and an antireflection layer arranged on the light incidence side on the front-side surface of a semiconductor substrate. The antireflection layer has a limit voltage of less than 10 volts, less than 5 volts, or less than 3 volts, along a layer thickness of the antireflection layer.