SnO2-Based Dye-Sensitized Hybrid Solar Cells Exhibiting Near Unity Absorbed Photon-to-Electron Conversion Efficiency

Improving the solar light harvesting and photon-to-electron conversion efficiency for hybrid, organic−inorganic photovoltaics are critical challenges. Titania based solid-state hybrid solar cells are moderately efficient at converting visible photons to electrons, but major electrical losses still r...

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Vydáno v:Nano letters Ročník 10; číslo 4; s. 1259 - 1265
Hlavní autoři: Snaith, Henry J, Ducati, Caterina
Médium: Journal Article
Jazyk:angličtina
Vydáno: Washington, DC American Chemical Society 14.04.2010
Témata:
Applied sciences
Coloring Agents - chemistry
Electrodes
Electronics
Electrons
Energy
Exact sciences and technology
Molecular electronics, nanoelectronics
Nanotechnology - methods
Natural energy
Photons
Photovoltaic conversion
Porosity
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Solar cells. Photoelectrochemical cells
Solar Energy
Surface Properties
Tin Compounds - chemistry
Solar cell
tin oxide
dye sensitized
solid-state
organic
Organic-inorganic hybrid materials
Organic dye
Hybrid material
Tin oxide
Magnesium oxide
Titanium oxide
Porous material
Mesoporosity
Surface treatment
Photovoltaic cell
ISSN:1530-6984, 1530-6992, 1530-6992
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Popis
Shrnutí:Improving the solar light harvesting and photon-to-electron conversion efficiency for hybrid, organic−inorganic photovoltaics are critical challenges. Titania based solid-state hybrid solar cells are moderately efficient at converting visible photons to electrons, but major electrical losses still remain. A material based paradigm shift is required to dramatically enhance the performance of these devices. Here, we present an investigation into solid-state dye-sensitized solar cells (SDSCs) incorporating a molecular hole-transporter and mesoporous tin oxide electrodes, in place of titania usually employed. We investigate the influence of treating the surface of the SnO2 with different oxides and find that MgO “passivated” SnO2 electrodes demonstrate an unprecedented absorbed photon-to-electron conversion efficiency of near unity across a broad spectral range. A dual surface treatment of TiO2 followed by MgO enables tuning of the solar cell photovoltage, fill factor, and efficiency with visible light absorbing cells delivering 3% solar-to-electrical full sun power conversion efficiency.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1530-6984
1530-6992
1530-6992
DOI:10.1021/nl903809r