Az Electronic Materials (luxembourg) S.a.r.l.

Sandra Stojanovic

Klaus Rode

Hartmut Wiezer

Hubert Liebe

Hans-Werner Schock

Stefan Brand

Andreas Dierdorf

Lars Blankenburg

Frank Osterod

Jan Schniebs

Christian Kaufmann

Lutz Prager

Rainer Mehnert

The invention relates to a thin-film solar cell () comprising a substrate () of metal or glass, a dielectric barrier layer () based on a polysilazane and a photovoltaic layer structure () of the copper-indium sulphide (CIS) type or the copper-indium selenide (CIGSe) type.

Solar cells with a barrier layer based on polysilazane

The invention relates polysilazane-containing coatings for increasing the light permeability of sun-facing covers of solar cells. The coating for surfaces contains at least one polysilazane of formula (1) &#x2014;(SiRR'R&#x2033;&#x2014;NR&#x2032;&#x2033;1)n- (1), wherein R&#x2032;, R&#x2033;, R&#x2032;&#x2033; are the same or different or represent an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group, n being an integer and n being chosen in such a manner that the perhydropolysilazane has a number average molecular weight of 150 to 150,000 g/mol, a solvent and a catalyst. The cured coating has a thickness of at least 0.50-10 micrometer, preferably 0.2 to 5 micrometer, especially preferred 0.5 to 1.5 micrometer. It is especially suitable as transmission-promoting coating for use in sun-facing covers of solar cells.

Polysilazane-containing coatings for increasing the conversion efficiency of encapsulated solar cells

Growing community of inventors

Gersthofen, Germany

Sandra Stojanovic