title: Dark states enhance the photocell power via phononic dissipation.
abstract: The high efficiency of the photon-to-charge conversion process found in photosynthetic complexes has inspired researchers to explore a new route for designing artificial photovoltaic materials. Quantum coherence can provide a mean to surpass the Shockley-Quiesser device concept limit by reducing the radiative recombination. Taking inspiration from these new discoveries, we consider a linearly-aligned system as a light-harvesting antennae composed of two-level optical emitters coupled with each other by dipole-dipole interactions. Our simulations show that the certain dark states can enhance the power with the aid of intra-band phononic dissipation. Due to cooperative effects, the output power will be improved when incorporating more emitters in the linear system.
authors.affiliation: Department of Physics, Purdue University, West Lafayette, IN 47907, USA.
authors.forename: Yiteng
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Physics, Wabash College, Crawfordsville, IN 47933, USA.
authors.forename: Aaron
authors.initials: A
authors.lastname: Wirthwein
authors.affiliation: Qatar Environment and Energy Research Institute, HBKU, Doha, Qatar.
authors.forename: Fahhad H
authors.initials: FH
authors.lastname: Alharbi
authors.affiliation: Department of Chemistry, Institute for Biophysical Dynamics, and The James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
authors.forename: Gregory S
authors.identifier: http://orcid.org/0000-0002-6740-5243
authors.initials: GS
authors.lastname: Engel
authors.affiliation: Qatar Environment and Energy Research Institute, HBKU, Doha, Qatar and Department of Chemistry, Department of Physics and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA. kais@purdue.edu.
authors.forename: Sabre
authors.initials: S
authors.lastname: Kais