Low-temperature ozone annealing for dye-sensitized solar cells
| Autor: | Yuta Komatsu, Ryo Ono, Shungo Zen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Ozone
Annealing (metallurgy) General Chemical Engineering Energy conversion efficiency General Physics and Astronomy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Dye-sensitized solar cell chemistry Chemical engineering Atomic oxygen 0210 nano-technology |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 367:290-293 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2018.08.046 |
| Popis: | The process whereby the TiO2 photoelectrode of dye-sensitized solar cells (DSSCs) is manufactured requires an annealing temperature of 450 °C. However, these DSSCs, which contain a low-cost, lightweight, and flexible plastic substrate, limit the annealing temperature to a maximum of 150 °C. This led us to develop a low-temperature (∼150 °C) annealing technique to process the TiO2 photoelectrode. The proposed method, which employs O3 as reactant, is based on the fact that O3 is thermally decomposed at ∼150 °C to produce atomic oxygen (O) atoms, to which the TiO2 photoelectrode is then exposed during annealing. Measurement of the carbon contents remaining on the TiO2 photoelectrode using energy dispersive X-ray spectrometry indicated that the O atoms can remove the organic binders contained in TiO2 paste. In addition, measurement of the energy conversion efficiency indicated that O atoms also have the ability to enhance TiO2 interparticle connections. This simple method to supply O atoms may not only be useful for treating the TiO2 photoelectrode of DSSCs but also for other surface treatments that require the use of O atoms. |
| Databáze: | OpenAIRE |
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