SKM 2021 – wissenschaftliches Programm
CPP 5.7: Poster
Dienstag, 28. September 2021, 17:30–19:30, P
Colloidal photonic crystal slabs toward enhanced photoconductivity — •Swagato Sarkar1, Vaibhav Gupta2, and Tobias A. F. König1,3 — 1Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), Institute for Physical Chemistry and Polymer Physics, Hohe Str. 6, 01069 Dresden, Germany — 2Institute of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany — 3Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden 01062 Dresden, Germany
In the present work, a fusion of interference lithography (IL) and nanosphere imprint lithography [Gupta, König, Fery, ACS Appl. Mater. Interfaces 2019, 11, 28189.] on various target substrates ranging from carbon film on transmission electron microscope grid to inorganic and dopable polymer semiconductor is reported. 1D colloidal photonic crystals are printed with 75% yield on the centimeter scale using colloidal ink and an IL-produced polydimethylsiloxane stamp. Atomically smooth facet, single-crystalline, and monodisperse colloidal building blocks of gold (Au) nanoparticles can produce 1D plasmonic grating on top of a titanium dioxide (TiO2) slab waveguide, producing waveguide-plasmon polariton [Sarkar, Fery, König, Adv. Funct. Mater. 2021, 31, 2011099.] modes with superior 10 nm spectral line-width. Plasmon-induced hot electrons are confirmed via two-terminal current measurements resulting in increased photoresponsivity as well as enhanced photocatalytic degradation of methyl orange (MO) dye molecules.