Electrochemical anodization of a titanium film on a Kapton HN substrate leads to the formation of closely packed aligned nanotubes, whose shape can be finely tuned by tailoring the anodization parameters. An amorphous-to-anatase phase transition is induced on nanotubes by annealing at 350 Β°C. The na
Bilayer molecular solar cells on spin-coated TiO2 substrates
β Scribed by Brian A. Gregg
- Book ID
- 103036795
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 387 KB
- Volume
- 258
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Solar cells with 20 nm films of molecular semiconductors can be constructed without electrical shorts by depositing the organic layers onto spin-coated films of TiO 2. The photovoltaic characteristics of a bilayer cell consisting of perylene bis(phenethylimide) and zinc phthalocyanine were measured and compared to those of the individual layers. The bilayer was much more efficient than either individual monolayer but did not behave as a classical p-n junction. It exhibited a short circuit photocurrent density of 1.5 mA/cm 2 and a wavelength-averaged short circuit quantum yield of 18% under 1 sun conditions.
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