TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The protective weathering layer comprises UV absorbers ( greater than or equal to 2.5 wt.%). The UV absorber is selected from 4,6-dibenzoylresorcinol, silylated 4,6-dibenzoylresorcinols, and/or 2,4-diphenyl-6-(2'-hydroxy-4'alkoxyphenyl)-1,3,5-triazines. The protective weathering layer comprises triazine of formula (I), dibenzoylresorcinol of formula (II), and dibenzoylresorcinol of the formula (III). The protective weathering layer comprises a block copolymer comprising the resorcinol polyarylate and the polycarbonate, where the block copolymer has a resorcinol polyarylate block content of less than or equal to 40 wt.%. The protective weathering layer further comprises a matrix selected from silicone, poly(meth)acrylates, and/or polycarbonates. The protective weathering layer has an engineered surface texture selected from lenses, microlenses, linear prisms, prisms, pyramids, and/or lenticular structures. The engineered surface texture is on a side of the protective weathering layer opposite the thermoplastic substrate. The thermoplastic substrate has a thermal shrinkage ratio less than 1% along both the extrusion direction and the cross-web direction after a 30-minute treatment at 150 degrees C. The thermoplastic substrate and protective weathering layer are co-extruded. The assembly further comprises a barrier coating layer comprising at least one zone substantially organic in composition and at least one zone substantially inorganic in composition; and a planarizing layer selected from an epoxy based resin, an acrylic based resin, and/or silicone resin, where the planarizing layer has a thickness of 1 nm to 100 mu m; UV-cured acrylic-colloidal silica coating layer; a primer located between the weathering layer and the thermoplastic substrate; adhesive layer located between the optoelectronic device and the thermoplastic substrate. The protective weathering layer has a UV absorbance loss rate at 330 nm of less than or equal to 0.15 A/year as estimated from filtered xenon arc exposure and/or having a rate of erosion of less than or equal to 5 mu m per year as estimated from filtered xenon arc exposure.R1-R3=H, 1-12C aliphatic, 3-12C cycloaliphatic, or aromatic (preferably H);R4=H, 1-24C aliphatic, or 3-24C cycloaliphatic (preferably 6-13C, or CH2CH2OOC7H15);R5=H, aliphatic 1-12C, cycloaliphatic 3-12C, or CH2CH2CH2SiR'n(OR8)3-n (preferably H);n=0-2;R8=H, aliphatic 1-12C;R6, R7=H, aliphatic 1-12C, cycloaliphatic 3-12C, or aromatic (preferably H);R9-R12=H, aliphatic 1-12C, cycloaliphatic 3-12C, or aromatic.