Graduate Thesis Or Dissertation
 

Low-Cost Light Trapping Layer via Melting Gel and Hot Embossing Technique

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/2r36v586n

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  • Light trapping plays a phenomenal role in enhancing light confinement and light absorption within the solar cells, thus increasing the optical efficiency of the cell. Different strategies are employed for trapping light photons within the cell. Methods used include a substrate or single layer texturing, light trapping coating, plasmonic gratings, nano and microwires, Nano domes, photonic crystals, and aggregates nanocrystalline. Nowadays, a hybrid glass coating made by melting gel through the so-gel process attracts people's attention. Melting gels are a kind of organic-inorganic hybrids silica gel, which are rigid at room temperature and become soft around 110℃. One can soften the melting gel many times until the gel is heat up to its consolidation temperature, at which the gel is permanently solidified. The study is focused on using 50 mol % MTES-50 mol % DMDES melting gel to produce a textured gel coating via wet-etched silicon mold and hot embossing technique, and then characterize the coating layer by using Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), FT-IR Spectroscopy (FT-IR), Ultra-Violet Visible and Near-Infrared (UV-Vis-NIR) Spectrophotometry with an Integrating Sphere. The results show that the textured gel coating might be used as a light-trapping layer to be applied on halide perovskite solar cells as a protection layer.
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