The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
ZnO−Al2O3 and ZnO−TiO2 Core−Shell Nanowire Dye-Sensitized Solar Cells
Open accessAbstract
We describe the construction and performance of dye-sensitized solar cells (DSCs) based on arrays of ZnO nanowires coated with thin shells of amorphous Al(2)O(3) or anatase TiO(2) by atomic layer deposition. We find that alumina shells of all thicknesses act as insulating barriers that improve cell open-circuit voltage (V(OC)) only at the expense of a larger decrease in short-circuit current density (J(SC)). However, titania shells 10-25 nm in thickness cause a dramatic increase in V(OC) and fill factor with little current falloff, resulting in a substantial improvement in overall conversion efficiency, up to 2.25% under 100 mW cm(-2) AM 1.5 simulated sunlight. The superior performance of the ZnO-TiO(2) core-shell nanowire cells is a result of a radial surface field within each nanowire that decreases the rate of recombination in these devices. In a related set of experiments, we have found that TiO(2) blocking layers deposited underneath the nanowire films yield cells with reduced efficiency, in contrast to the beneficial use of blocking layers in some TiO(2) nanoparticle cells. Raising the efficiency of our nanowire DSCs above 2.5% depends on achieving higher dye loadings through an increase in nanowire array surface area.
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Metadata
- Authors
- Law, M., Greene, L. E., Radenovic, A., Kuykendall, T., Liphardt, J., & Yang, P.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-10-12
- Volume
- 110
- Issue
- 45
- Pages
- 22652-22663
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2165149554
- Cited by
- 698
- References
- 40
- FWCI
- 26.35
- Type
- journal article
- Language
- en
- Open access
- green
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