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PROBLEM TO BE SOLVED: To provide a paste composition that forms thin, high-aspect-ratio features within a conductive structure and an assembly method therefor.SOLUTION: A paste composition for forming a front-side electrode of a solar cell comprises a source of electrically conductive metal, a lead

PROBLEM TO BE SOLVED: To provide a paste composition that forms thin, high-aspect-ratio features within a conductive structure and an assembly method therefor.SOLUTION: A paste composition for forming a front-side electrode of a solar cell comprises a source of electrically conductive metal, a lead tellurium oxide glass frit 0.25 to 8 wt.% based on the total weight of the paste composition, the glass frit having a d50 value of 0.5-1 μm, and an organic vehicle. The organic vehicle comprises organic polymer material and a solvent. The organic polymer material comprises microgel particles having range polymer units with molecular weights ranging from 107 to 1012. The total amount of the organic polymer material ranges from 0.01 to 5 wt.% based on the total weight of the paste composition. The microgel particles are a mixture of iso-butyl methacrylate, benzyl methacrylate, n-butyl methacrylate and methyl methacrylate or a mixture of BMA, MMA and 2-(2-oxo-1-imidazolidinyl)ethyl methacrylate (UMA).SELECTED DRAWING: Figure 1F

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