TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aldehyde scavenger is anthranilamide, tryptophan (both preferred), salicylamide, salicylanilide, ortho-phenylenediamine, 3,4-diaminobenzoic acid, 1,8-diaminonaphthalene, ortho-mercaptobenzamide, N-acetylglycinamide, malonamide, 3-mercapto-1,2-propanediol, histidine, 4-amino-3-hydroxybenzoic acid, 4,5-dihydroxy-2,7-naphthalene disulfonic acid and its disodium salt, biuret, 2,3-diaminopyridine, 1,2-diaminoanthraquinone, dianilinoethane, allantoin or 2-amino-2-methyl-1,3-propanediol. The poly(vinyl butyral) encapsulant: comprises the aldehyde scavengers (0.2-0.5 wt.%); is in the form of the poly(vinyl butyral) sheet; and further comprises at least one additives including at least one UV absorber (0.01-1 wt.%), at least one thermal stabilizer (0.01-1 wt.%), at least one hindered amine (0.01-1 wt.%), at least one unsaturated heterocyclic compound (0.5-2 wt.%), at least one reducing agent (0.1-2 wt.%), and at least one chelating agent (0.01-1 wt.%), based on the total weight of the poly(vinyl butyral) encapsulant. The UV absorbers are 2H-substituted benzotriazole derivatives, the thermal stabilizers comprise octylphenol or butylated hydroxytoluene, the hindered amines are 2,2,6,6-tetramethylpiperadine, 2,2,6,6-tetramethylpiperadinol, 2-(dimethyl amino)pyridine, 4-(dimethylamino)pyridine, N-butyl piperidine, N,N-diethyl cyclohexylamine or hindered amine light stabilizers, the unsaturated heterocyclic compounds are 1H-benzotriazole, 5-methyl-1H-benzotriazole, imidazole, 2-methyl imidazole or 1H-1,2,3-triazole, the reducing agents are hydroquinones, and the chelating agents are ethylenediaminetetraacetic acid, ethylenediamine monoacetic acid, ethylenediamine diacetic acid, ethylenediamine triacetic acid, ethylene diamine, tris(2-aminoethyl) amine or diethylene-triamine-pentacetic acid. The metal component is conductive pastes, connecting wires, conductive coatings or reflector films, or silver component, which: is substantially pure silver; comprises at least 2 wt.% of elemental silver; comprises a silver alloy, where the alloy comprises at least 2 wt.% of elemental silver; and is conductive pastes, connecting wires, conductive coatings or reflector films. The solar cells comprise: wafer-based solar cells including monocrystalline silicon or multi-crystalline silicon based solar cells; and thin film solar cells and the thin film solar cells comprise at least one material including amorphous silicon, microcrystalline silicon, cadmium telluride, copper indium diselenide, copper indium/gallium diselenide, light absorbing dyes or organic semiconductors. The pre-lamination assembly further comprises at least one additional layers including: a second poly(vinyl butyral) sheet that may be the same as or different from the poly(vinyl butyral) sheet, where the second poly(vinyl butyral) sheet is in contact with the solar cell assembly; a protective outer layer that is in contact with the poly(vinyl butyral) sheet; a second protective outer layer that may be the same as or different from the protective outer layer, where the second protective outer layer in contact with the second poly(vinyl butyral) sheet; and a substrate or a superstrate that is in contact with the solar cell assembly and with the poly(vinyl butyral) sheet.