Open AccessInfiltrated photonic crystals for light-trapping in CuInSe_2 nanocrystal-based solar cells
Author(s) -
Stephan Dottermusch,
Aina Quintilla,
Guillaume Gomard,
Aiman Roslizar,
Vikas Reddy Voggu,
B. A. Simonsen,
J. S. Park,
Douglas R. Pernik,
Brian A. Korgel,
Ulrich W. Paetzold,
Bryce S. Richards
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.00a502
Subject(s) - materials science , photonic crystal , nanocrystal , optoelectronics , absorption (acoustics) , optics , photonics , refractive index , nanotechnology , physics , composite material
Solution processable nanocrystal solar cells combine the advantages of low-cost printing and wide range of accessible absorber materials, however high trap densities limit performance and layer thickness. In this work we develop a versatile route to realize the infiltration of a photonic crystal, with copper indium diselenide nanocrystal ink. The photonic crystal allows to couple incident light into pseudo-guided modes and thereby enhanced light absorption. For the presented design, we are able to identify individual guided modes, explain the underlying physics, and obtain a perfect match between the measured and simulated absorption peaks. For our relatively low refractive index layers, a 7% maximum integrated absorption enhancement is demonstrated.