Patent ID: 8330039

Claim:
A solar cell module comprising a solar cell assembly comprising one or more solar cells and a poly(vinyl butyral) encapsulant, wherein (i) the solar cell assembly further comprises a silver component; (ii) the silver component comprises elemental silver; (iii) the silver component is in contact with the poly(vinyl butyral) encapsulant; (iv) the poly(vinyl butyral) encapsulant comprises a poly(vinyl butyral) polymer, about 15 to about 45 wt % of one or more plasticizers and about 0.1 to about 2 wt % of one or more unsaturated heterocyclic compounds, based on the total weight of the poly(vinyl butyral) encapsulant; and further wherein the unsaturated heterocyclic compound is a 1,2,3-triazole or a 1,2,3-triazole derivative having a formula of: wherein R represents a hydrogen atom or a substituent; wherein, when the unsaturated heterocyclic compound comprises more than one substituent R, the substituents R are identical or different; and wherein the substituents R are selected from the group consisting of alkyl groups that are branched or unbranched, linear or cyclic; singly or multiply unsaturated hydrocarbon groups that are unbranched or branched, linear or cyclic, aromatic or non-aromatic; amino groups; hydroxyl groups; alkoxy groups; and halogen atoms; and further wherein one or more of the substituents R may optionally be substituted with one or more halogen atoms that may be the same or different or with one or more branched or unbranched alkyl groups comprising from 1 to 4 carbon atoms that may be the same or different.