Transparent and Colorless Dye-Sensitized Solar Cells Exceeding 75% Average Visible Transmittance
Copyright policy )Transparent and Colorless Dye-Sensitized Solar Cells Exceeding 75% Average Visible Transmittance
Most photovoltaic (PV) technologies are opaque to maximize visible light absorption. However, see-through solar cells open additional perspectives for PV integration. Looking beyond maximizing visible light harvesting, this work considers the human eye photopic response to optimize a selective near-infrared sensitizer based on a polymethine cyanine structure (VG20-C x ) to render dye-sensitized solar cells (DSSCs) fully transparent and colorless. This peculiarity was achieved by conferring to the dye the ability to strongly and sharply absorb beyond 800 nm (S0-S1 transition) while rejecting the upper S0-S n contributions far in the blue where the human retina is poorly sensitive. When associated with an aggregation-free anatase TiO2 photoanode, the selective NIR-DSSC can display 3.1% power conversion efficiency, up to 76% average visible transmittance (AVT), a value approaching the 78% AVT value of a standard double glazing window while reaching a color rendering index (CRI) of 92.1%. The ultrafast and fast charge transfer processes are herein discussed, clarifying the different relaxation channels from the dye monomer excited states and highlighting the limiting steps to provide future directions to enhance the performances of this nonintrusive NIR-DSSC technology.
- University of Turin Italy
- Grenoble Alpes University France
- Laboratoire d'informatique de Paris 6 France
- Laboratoire Parole et Langage France
- École Polytechnique Fédérale de Lausanne EPFL Switzerland
dye-sensitized, retina, PV integration, design, relaxation channels, perspective, transparent photovoltaic (tpv), contribution, 800 nm, [CHIM] Chemical Sciences, Transmittance, future directions, high color rendering index TPV, transition, polymethine cyanine structure, transparent photovoltaic (TPV); dye-sensitized solar cells (DSSC); near-infrared sensitizers; cyanine dyes; time-resolved spectroscopies; high color rendering index TPV, Chemistry, AVT, charge transfer processes, CRI, Visible, transparent photovoltaic (TPV) ; dye-sensitized solar cells (DSSC) ; near-infrared sensitizers ; cyanine dyes ; time-resolved spectroscopies ; high color rendering index TPV, light absorption, Exceeding, aggregation-free anatase TiO 2 phot., electron injection, charge-transfer, transparent photovoltaic (TPV), performance, Biotechnology, conversion efficiency, semitransparent, nanocrystalline tio2 films, cyanine dyes, ability, ultrafast, VG 20-C x, Biophysics, high color rendering index tpv, 535, Solar, photovoltaic, Colorles, light harvesting, [CHIM]Chemical Sciences, eye photopic response, conversion, co-sensitization, QD1-999, dye-sensitized solar cells (dssc), dye monomer, peculiarity, near-infrared sensitizers, dye-sensitized solar cells (DSSC), near-infrared sensitizer, Average, efficiency, time-resolved spectroscopies, Transparent, nonintrusive NIR-DSSC technology, Physical Sciences not elsewhere classified, squaraine dyes, Neuroscience
dye-sensitized, retina, PV integration, design, relaxation channels, perspective, transparent photovoltaic (tpv), contribution, 800 nm, [CHIM] Chemical Sciences, Transmittance, future directions, high color rendering index TPV, transition, polymethine cyanine structure, transparent photovoltaic (TPV); dye-sensitized solar cells (DSSC); near-infrared sensitizers; cyanine dyes; time-resolved spectroscopies; high color rendering index TPV, Chemistry, AVT, charge transfer processes, CRI, Visible, transparent photovoltaic (TPV) ; dye-sensitized solar cells (DSSC) ; near-infrared sensitizers ; cyanine dyes ; time-resolved spectroscopies ; high color rendering index TPV, light absorption, Exceeding, aggregation-free anatase TiO 2 phot., electron injection, charge-transfer, transparent photovoltaic (TPV), performance, Biotechnology, conversion efficiency, semitransparent, nanocrystalline tio2 films, cyanine dyes, ability, ultrafast, VG 20-C x, Biophysics, high color rendering index tpv, 535, Solar, photovoltaic, Colorles, light harvesting, [CHIM]Chemical Sciences, eye photopic response, conversion, co-sensitization, QD1-999, dye-sensitized solar cells (dssc), dye monomer, peculiarity, near-infrared sensitizers, dye-sensitized solar cells (DSSC), near-infrared sensitizer, Average, efficiency, time-resolved spectroscopies, Transparent, nonintrusive NIR-DSSC technology, Physical Sciences not elsewhere classified, squaraine dyes, Neuroscience
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