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Assessment of TiO2 ...
Assessment of TiO2 Blocking Layers for CuII/I-Electrolyte Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
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- Michaels, Hannes (author)
- Uppsala universitet,Fysikalisk kemi,School of Natural and Environmental Science, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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- Freitag, Marina (author)
- Uppsala universitet,Fysikalisk kemi,School of Natural and Environmental Science, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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(creator_code:org_t)
- 2022-02-11
- 2022
- English.
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In: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 5:2, s. 1933-1941
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Abstract
Subject headings
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- The TiO2 blocking layer in dye-sensitized solar cells is the most difficult component to evaluate at thicknesses below 50 nm, but it is crucial for the power conversion efficiency. Here, the electrode capacitance of TiO2 blocking layers is tested in aqueous [Fe(CN)6]3–/4– and correlated to the performance of photoanodes in devices based on a [Cu(tmby)2]2+/+ electrolyte. The effects of the blocking layer on electronic recombination in the devices are illustrated with transient photovoltage methods and electrochemical impedance analysis. We have thus demonstrated a feasible and facile method to assess TiO2 blocking layers for the fabrication of dye-sensitized solar cells.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- dye-sensitized solar cells
- impedance spectroscopy
- blocking layer
- solar cells
- spray pyrolysis
- electrochemical double layer
- electrode capacitance
- recombination
Publication and Content Type
- ref (subject category)
- art (subject category)
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