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Efficiency Enhancement of PEDOT:PSS/Si Hybrid Solar Cells by Using Nanostructured Radial Junction and Antireflective Surface
- Chen, Jheng-Yuan, Con, Celal, Yu, Ming-Hung, Cui, Bo, Sun, Kien Wen
- ACS Applied Materials & Interfaces 2013 v.5 no.15 pp. 7552-7558
- absorption, cost effectiveness, nanoparticles, photovoltaic cells, silicon, surfactants
- We demonstrate the implementation of a hybrid solar cell that comprises a surface nanostructured n-type Si and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). The Si surface before deposition of the organic layer was nanostructured by using CsCl self-assembled nanoparticles as a hard mask and dry etching to form radial junction architectures and enhance light diffusion and absorption. Apart from the textured Si surface, processing parameters such as from metal-electrode shadow ratio, spin-coating rate, and surfactant addition were properly adjusted to improve overall cell performance. Our hybrid solar cells achieve the best performance under optimized cell parameters with a power conversion efficiency of 8.84% and short-circuit current density of 30.5 mA/cm². This combined technique provides a simple, scalable, and cost-effective process for fabricating hybrid solar cells.