Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 43, Pages 18515-18522Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp904919r
Keywords
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Funding
- EPSRC [EP/17056702/1]
- Cambridge Carbon Trust [EU FP7]
- EPSRC [EP/G012121/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G012121/1] Funding Source: researchfish
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We have applied a MgO and a ZrO2 shell deposition method to control the interface between two indolene-based organic dyes in solid-state dye-sensitized solar cells. The shell deposition was carried out at less than 100 degrees C, and shell thickness was shown to be 2 nm for the ZrO2 and 6-10 nm for the MgO by transmission electron microscopy. X-ray photoelectron spectroscopy has shown the initial ZnO NWs and core-shell structures have little surface water contamination. The use of suitable dyes, D102 and D149, has led to power conversion efficiency for ZnO NW based hybrid solar cells of 0.71%. Transient absorption measurements indicate that enhancements in photoinduced charge generation with core-shell formation are the main factor leading to the improved device efficiency.
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