Fabrication of layered hydroxide zinc nitrate films and their conversion to ZnO nanosheet assemblies for use in dye-sensitized solar cells
| Autor: | Shintaro Ueno, Shinobu Fujihara, Manabu Hagiwara, Takuya Yuki |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Fabrication Inorganic chemistry Clay industries. Ceramics. Glass chemistry.chemical_element 02 engineering and technology Zinc Dye-sensitized solar cells 010402 general chemistry 01 natural sciences chemistry.chemical_compound Zinc nitrate Zinc oxide Deposition Microstructure Deposition (law) Nanosheet Layered zinc hydroxide compound 021001 nanoscience & nanotechnology 0104 chemical sciences TP785-869 Dye-sensitized solar cell chemistry Chemical engineering Ceramics and Composites Hydroxide 0210 nano-technology Chemical bath deposition |
| Zdroj: | Journal of Asian Ceramic Societies, Vol 3, Iss 1, Pp 144-150 (2015) |
| ISSN: | 2187-0764 |
| DOI: | 10.1016/j.jascer.2014.12.006 |
| Popis: | Layered hydroxide zinc nitrate (LHZN; Zn5(NO3)2(OH)8·xH2O) films were fabricated on glass or plastic substrates by a chemical bath deposition method combined with a homogeneous precipitation in methanolic solutions. High- or low-temperature pyrolytic decomposition of the LHZN films having two-dimensional morphology was attempted to obtain porous ZnO nanosheet-assembly films. The LHZN films were converted into porous ZnO films by pyrolyzing at temperatures above 400°C, while porous LHZN/ZnO hybrid films were obtained by pyrolyzing at a lower temperature of 120°C without morphological changes. The pyrolyzed ZnO films were applied to dye-sensitized solar cells (DSSCs), resulting in the generation of relatively high open-circuit voltages. The low-temperature pyrolysis enabled us to fabricate the LHZN/ZnO film even on the plastic substrate. Actually a cell using the LHZN/ZnO film on an indium tin oxide-coated polyethylene naphthalate substrate showed an energy conversion efficiency of 2.08% with a high open-circuit voltage around 0.70V. |
| Databáze: | OpenAIRE |
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