Sub-100 nm TiO2 tubular architectures for efficient solar energy conversion
| Autor: | Menna Samir, Mohamed Salama, Nageh K. Allam |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nanotube
Materials science Renewable Energy Sustainability and the Environment Anodizing Energy conversion efficiency Nanotechnology 02 engineering and technology General Chemistry Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Electron transfer law Solar cell Water splitting General Materials Science 0210 nano-technology Scaling |
| Zdroj: | Journal of Materials Chemistry A. 4:9375-9380 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c6ta03156k |
| Popis: | Significant enhancement in the performance of solar energy conversion devices has historically been achieved through optimized device scaling. Scaling trends will be extremely difficult to maintain unless new materials and device structures are discovered. Herein, sub-100 nm TiO2 tubular architectures were synthesized, for the first time, via galvanostatic anodization. The fabricated nanotubes are partially crystalline with high photoactivity towards water splitting and solar-to-electric conversion. Mott–Schottky, transient photocurrent and incident photon-to-current efficiency (IPCE) analyses indicate a faster electron transfer at the nanotube/electrolyte interface. The sub-100 nm tubes showed a maximum conversion efficiency of 9.3% upon their use in dye-sensitized solar cell devices. The concept of short nanotubes should be useful for the future use of the material in various applications. |
| Databáze: | OpenAIRE |
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