Improving Light Harvesting in Dye-Sensitized Solar Cells Using Hybrid Bimetallic Nanostructures
Abstract
In this paper, we demonstrate improved light trapping in dye-sensitized solar cells (DSSCs) with hybrid bimetallic gold core/silver shell nanostructures. Silica-coated bimetallic nanostructures (Au/Ag/SiO2 NSs) integrated in the active layer of DSSCs resulted in 7.51% power conversion efficiency relative to 5.97% for reference DSSCs, giving rise to 26% enhancement in device performance. DSSC efficiencies were governed by the particle density of Au/Ag/SiO2 NSs with best performing devices utilizing only 0.44 wt % of nanostructures. We performed transient absorption spectroscopy of DSSCs with variable concentrations of Au/Ag/SiO2 NSs and observed an increase in amplitude and decrease in lifetime with increasing particle density relative to reference. Finally, we attributed this trend to plasmon resonant energy transfer and population of the singlet excited states of the sensitizer molecules at the optimum concentration of NSs promoting enhanced exciton generation and rapid charge transfer into TiO2.
- Authors:
-
- Vanderbilt Univ., Nashville, TN (United States). Dept. of Chemical and Biomolecular Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
- Vanderbilt Univ., Nashville, TN (United States). Dept. of Mechanical Engineering
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF); Dept. of Education (United States)
- OSTI Identifier:
- 1261274
- Alternate Identifier(s):
- OSTI ID: 1261394
- Grant/Contract Number:
- AC05-00OR22725; NSF EPS1004083; EEC 1342185; 1445197; P0200A090323
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Photonics
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2330-4022
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; bimetallic nanostructures; dye-sensitized solar cell; electron dynamics; plasmon-enhanced solar cell; transient absorption spectroscopy
Citation Formats
Zarick, Holly F., Erwin, William R., Boulesbaa, Abdelaziz, Hurd, Olivia K., Webb, Joseph A., Puretzky, Alexander A., Geohegan, David B., and Bardhan, Rizia. Improving Light Harvesting in Dye-Sensitized Solar Cells Using Hybrid Bimetallic Nanostructures. United States: N. p., 2016.
Web. doi:10.1021/acsphotonics.5b00552.
Zarick, Holly F., Erwin, William R., Boulesbaa, Abdelaziz, Hurd, Olivia K., Webb, Joseph A., Puretzky, Alexander A., Geohegan, David B., & Bardhan, Rizia. Improving Light Harvesting in Dye-Sensitized Solar Cells Using Hybrid Bimetallic Nanostructures. United States. https://doi.org/10.1021/acsphotonics.5b00552
Zarick, Holly F., Erwin, William R., Boulesbaa, Abdelaziz, Hurd, Olivia K., Webb, Joseph A., Puretzky, Alexander A., Geohegan, David B., and Bardhan, Rizia. Mon .
"Improving Light Harvesting in Dye-Sensitized Solar Cells Using Hybrid Bimetallic Nanostructures". United States. https://doi.org/10.1021/acsphotonics.5b00552. https://www.osti.gov/servlets/purl/1261274.
@article{osti_1261274,
title = {Improving Light Harvesting in Dye-Sensitized Solar Cells Using Hybrid Bimetallic Nanostructures},
author = {Zarick, Holly F. and Erwin, William R. and Boulesbaa, Abdelaziz and Hurd, Olivia K. and Webb, Joseph A. and Puretzky, Alexander A. and Geohegan, David B. and Bardhan, Rizia},
abstractNote = {In this paper, we demonstrate improved light trapping in dye-sensitized solar cells (DSSCs) with hybrid bimetallic gold core/silver shell nanostructures. Silica-coated bimetallic nanostructures (Au/Ag/SiO2 NSs) integrated in the active layer of DSSCs resulted in 7.51% power conversion efficiency relative to 5.97% for reference DSSCs, giving rise to 26% enhancement in device performance. DSSC efficiencies were governed by the particle density of Au/Ag/SiO2 NSs with best performing devices utilizing only 0.44 wt % of nanostructures. We performed transient absorption spectroscopy of DSSCs with variable concentrations of Au/Ag/SiO2 NSs and observed an increase in amplitude and decrease in lifetime with increasing particle density relative to reference. Finally, we attributed this trend to plasmon resonant energy transfer and population of the singlet excited states of the sensitizer molecules at the optimum concentration of NSs promoting enhanced exciton generation and rapid charge transfer into TiO2.},
doi = {10.1021/acsphotonics.5b00552},
journal = {ACS Photonics},
number = 3,
volume = 3,
place = {United States},
year = {Mon Jan 25 00:00:00 EST 2016},
month = {Mon Jan 25 00:00:00 EST 2016}
}
Web of Science
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