title: Efficiency enhancement of PEDOT:PSS/Si hybrid solar cells by using nanostructured radial junction and antireflective surface.
abstract: 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/cm(2). This combined technique provides a simple, scalable, and cost-effective process for fabricating hybrid solar cells.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
authors.forename: Jheng-Yuan
authors.initials: JY
authors.lastname: Chen
authors.forename: Celal
authors.initials: C
authors.lastname: Con
authors.forename: Ming-Hung
authors.initials: MH
authors.lastname: Yu
authors.forename: Bo
authors.initials: B
authors.lastname: Cui
authors.forename: Kien Wen
authors.initials: KW
authors.lastname: Sun