title: Resonance-induced absorption enhancement in colloidal quantum dot solar cells using nanostructured electrodes.
abstract: The application of nanostructured indium-doped tin oxide (ITO) electrodes as diffraction gratings for light absorption enhancement in colloidal quantum dot solar cells is numerically investigated using finite-difference time-domain (FDTD) simulation. Resonant coupling of the incident diffracted light with supported waveguide modes in light absorbing layer at particular wavelengths predicted by grating far-field projection analysis is shown to provide superior near-infrared light trapping for nanostructured devices as compared to the planar structure. Among various technologically feasible nanostructures, the two-dimensional nano-branch array is demonstrated as the most promising polarization-independent structure and proved to be able to maintain its performance despite structural imperfections common in fabrication.
authors.forename: Seyed Milad
authors.initials: SM
authors.lastname: Mahpeykar
authors.forename: Qiuyang
authors.initials: Q
authors.lastname: Xiong
authors.forename: Xihua
authors.initials: X
authors.lastname: Wang
mesh_terms: D065638:Absorption, Radiation; D003198:Computer Simulation; D017076:Computer-Aided Design; D011211:Electric Power Supplies; D004566:Electrodes; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D008962:Models, Theoretical; D045663:Quantum Dots; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012993:Solar Energy