研究目的
Investigating the enhancement of power conversion efficiency in semi-transparent dye-sensitized solar cells through the use of dual-band luminescent solar converters.
研究成果
The dual LSC / DSSC achieved an efficiency of 7.8% and an average visible transmittance (AVT) of 43%, demonstrating an efficiency improvement of about 6% with minimal sacrifice in solar cell transparency. The study highlights the potential of LSCs in enhancing the performance of semi-transparent photovoltaic devices.
研究不足
The study notes relatively low light harvesting efficiencies that need improvement, suggesting the application of broad band absorbing LSC or dyes with high quantum yield for future research.
1：Experimental Design and Method Selection:
The study employs a sandwich architecture of downshift (DS) LSC / DSSC / upconversion (UC) LSC to enhance the power conversion efficiency (PCE) of DSSCs without significantly decreasing visible transmittance.
2：Sample Selection and Data Sources:
DS LSCs and UC LSCs were prepared with anthracene and PdTPBP/BPEA dispersed in polyurethane, respectively, and affixed to the front or back of the DSSC.
3：List of Experimental Equipment and Materials:
Includes polyurethane for LSC films, anthracene, PdTPBP, BPEA, TiO2 nanoparticles for scattering, and standard DSSC components.
4：Experimental Procedures and Operational Workflow:
LSC films were cast on glass substrates, crosslinked, and attached to DSSCs. Photovoltaic performance was evaluated under simulated solar light.
5：Data Analysis Methods:
Photocurrent-voltage (J-V) plots were measured, and photocurrent density as a function of wavelength was analyzed to confirm light harvesting by DS and UC processes.
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UV-vis spectrometer
UV-2550
SHIMADZU
Measurement of absorption spectra.
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spectrofluorophotometer
RF-6000
SHIMADZU
Measurement of PL spectra.
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polyurethane
Matrix for LSC films due to low permeability to oxygen and fast diffusion of dye molecules.
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anthracene
Aldrich
Dye in DS LSC for converting ultraviolet light to visible light.
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meso-tetraphenyl-tetrabenzoporphine palladium
Chemodex
Sensitizer dye in UC LSC for absorbing red light.
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9,10-bis-penylethynylanthrancence
Sigma-Aldrich
Emitter dye in UC LSC for converting red light into visible light.
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TiO2 nanoparticles
20 nm
Scatterers in UC LSC to enhance backward emission.
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TiO2 nanoparticles paste
DSL 18NR-T
Dyesol
Used in the preparation of TiO2 electrodes for DSSCs.
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fluorinated tin oxide conducting glass
Substrate for DSSC electrodes.
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D205 dye
Mitsubishi Paper Mills Limited
Sensitizer dye for DSSCs.
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H2PtCl6
Used in the preparation of Pt counter electrodes for DSSCs.
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spacer film
Surlyn
DuPont
Used to sandwich TiO2 photoanode and Pt counter electrode with a gap.
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source meter
Keithley Instruments
Measurement of J-V characteristics of DSSCs.
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Xe lamp
300 W
Oriel
Production of simulated solar light.
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Si reference cell
BS-520
Bunko-Keiki
Adjustment of light intensity to obtain a power density of 100 mW/cm2.
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bioluminescence imaging system
IVIS Lumina
Obtainment of florescence images.
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