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Performance limits of a heterojunction thin-film crystalline silicon on a glass solar cell (SC) in a substrate configuration were analyzed using the computer simulation program “Advanced Semiconductor Analysis” from the Delft University of Technology. The role of light trapping, due to scattering at randomly rough interfaces, on the absorption in the individual layers of the SC was investigated. The...
Modulated surface-textured substrates exhibiting high haze in a broad range of wavelengths were fabricated. Glass substrates coated with different thicknesses of a sacrificial layer were wet-etched allowing the manipulation of the surface morphology with surface roughness ranging from 200 nm up to 1000 nm. Subsequently, zinc-oxide layers were sputtered and then wet-etched constituting the final modulated...
We investigate the use of silver nanoparticles as light scattering elements to improve light trapping in amorphous silicon solar cells. Simulations presented in literature show that these nanoparticles can scatter light very efficiently due to plasmon resonance. However, our previous experimental work showed that light trapping does not improve when silver nanoparticles, fabricated by annealing a...
The properties of thin-film silicon strongly depend on the deposition method, conditions and the substrate material. The analysis of the microstructure of thin silicon films requires diagnostic tools which are independent on substrate or device concept. In this contribution Raman spectroscopy as a powerful tool for analyzing the microstructure and material phase of hydrogenated amorphous silicon (a-Si:H)...
The application of a light trapping technique based on light scattering by metal nanoparticles through excitation of localized surface plasmons was studied. Our objective was to investigate experimentally the most suitable location for the metal nanoparticles inside hydrogenated amorphous silicon (a-Si:H) solar cells for efficient light scattering. Silver nanoparticles were embedded either at the...
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