Synthesis of CdSe−TiO2 Nanocomposites and Their Applications to TiO2 Sensitized Solar Cells
| Autor: | Sung Bum Choi, Sangwook Lee, Sung Hun Yoon, Arthur J. Frank, Jun Hong Noh, Kug Sun Hong, Tae Hoon Noh, Jin Young Kim |
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| Rok vydání: | 2009 |
| Předmět: |
Titanium
Materials science Nanocomposite Annealing (metallurgy) Composite number Nanotechnology Surfaces and Interfaces Condensed Matter Physics Nanocomposites Titanium oxide symbols.namesake Aminolysis Microscopy Electron Transmission X-Ray Diffraction Chemical engineering Photoinduced charge separation Transmission electron microscopy Cadmium Compounds Electrochemistry symbols General Materials Science Selenium Compounds Raman spectroscopy Spectroscopy |
| Zdroj: | Langmuir. 25:5348-5351 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la804310z |
| Popis: | CdSe-TiO(2) nanocomposites were synthesized via aminolysis of Ti-oleate complexes in the presence of CdSe nanocrystals, and their application as sensitizers for TiO(2) solar cells was investigated. The formation of CdSe-TiO(2) nanocomposites was confirmed using transmission electron microscopy and Raman spectroscopy. The emission spectrum of CdSe-TiO(2) nanocomposites revealed photoinduced charge separation at the CdSe-TiO(2) interface of the composite. The photocurrent-voltage properties of CdSe-TiO(2)-sensitized TiO(2) particle films compared favorably with those of CdSe-sensitized TiO(2) films. Evidence was also found indicating that the TiO(2) component of the composite protects CdSe against degradation during film annealing. |
| Databáze: | OpenAIRE |
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