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Title: Planar dye-sensitized photovoltaics through cavity mode enhancement.

Abstract

Dye-sensitized solar cells (DSSCs) differ from conventional solar cells in that they rely on a large area nanoparticle network to achieve sufficient absorption of sunlight. Although highly successful to date, this approach limits the opportunities to further increase DSSC power efficiency because it necessarily restricts the choice of redox shuttles to those compatible with the long electron transit times and ample recombination opportunities inherent to the nanoparticle-based architecture. Here, we use a resonantly coupled cavity scheme to demonstrate planar, thin-film DSSCs with a polarized, monochromatic incident photon to current efficiency of 17% from a single monolayer of a conventional Ru-dye. Upon illumination on resonance we observe open-circuit voltages that reach 1 V and thereby approach the theoretical limit for open-circuit voltage set by the dye and redox shuttle energy levels. The results supply new insight into processes presently limiting DSSCs and point to novel strategies to overcome these losses.

Authors:
; ; ; ;  [1]
  1. Center for Nanoscale Materials
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1021320
Report Number(s):
ANL/MSD/JA-69466
Journal ID: 1754-5706; TRN: US201116%%716
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
EES
Additional Journal Information:
Journal Volume: 4; Journal Issue: 2011
Country of Publication:
United States
Language:
ENGLISH
Subject:
14 SOLAR ENERGY; DYES; ELECTRIC POTENTIAL; ENERGY LEVELS; SENSITIZERS; SOLAR CELLS; THIN FILMS

Citation Formats

Martinson, A B. F., Giebink, N C, Wiederrecht, G P, Rosenmann, D, Wasielewski, M R, MSD), and Northwestern Univ.). Planar dye-sensitized photovoltaics through cavity mode enhancement.. United States: N. p., 2011. Web. doi:10.1039/C1EE01578H.
Martinson, A B. F., Giebink, N C, Wiederrecht, G P, Rosenmann, D, Wasielewski, M R, MSD), & Northwestern Univ.). Planar dye-sensitized photovoltaics through cavity mode enhancement.. United States. doi:10.1039/C1EE01578H.
Martinson, A B. F., Giebink, N C, Wiederrecht, G P, Rosenmann, D, Wasielewski, M R, MSD), and Northwestern Univ.). Sat . "Planar dye-sensitized photovoltaics through cavity mode enhancement.". United States. doi:10.1039/C1EE01578H.
@article{osti_1021320,
title = {Planar dye-sensitized photovoltaics through cavity mode enhancement.},
author = {Martinson, A B. F. and Giebink, N C and Wiederrecht, G P and Rosenmann, D and Wasielewski, M R and MSD) and Northwestern Univ.)},
abstractNote = {Dye-sensitized solar cells (DSSCs) differ from conventional solar cells in that they rely on a large area nanoparticle network to achieve sufficient absorption of sunlight. Although highly successful to date, this approach limits the opportunities to further increase DSSC power efficiency because it necessarily restricts the choice of redox shuttles to those compatible with the long electron transit times and ample recombination opportunities inherent to the nanoparticle-based architecture. Here, we use a resonantly coupled cavity scheme to demonstrate planar, thin-film DSSCs with a polarized, monochromatic incident photon to current efficiency of 17% from a single monolayer of a conventional Ru-dye. Upon illumination on resonance we observe open-circuit voltages that reach 1 V and thereby approach the theoretical limit for open-circuit voltage set by the dye and redox shuttle energy levels. The results supply new insight into processes presently limiting DSSCs and point to novel strategies to overcome these losses.},
doi = {10.1039/C1EE01578H},
journal = {EES},
number = 2011,
volume = 4,
place = {United States},
year = {2011},
month = {1}
}