期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 1, 页码 225-233出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ee00362j
关键词
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资金
- EPSRC [EP/F056702/1]
- Department of Energy through the Cornell Fuel Cell Institute (CFCI) [DE-FG02 87ER45298]
- National Science Foundation [DMR-0605856]
- Cornell Universiy KAUST Center for Research and Education
- Studienstiftung des deutschen Volkes
- Royal Society
- [EP/F065884/1]
- EPSRC [EP/G012121/1, EP/G049653/1, EP/F065884/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F056702/1, EP/G049653/1, EP/F065884/1] Funding Source: researchfish
Anatase TiO2 is typically a central component in high performance dye-sensitised solar cells (DSCs). This study demonstrates the benefits of high temperature synthesised mesoporous titania for the performance of solid-state DSCs. In contrast to earlier methods, the high temperature stability of mesoporous titania is enabled by the self-assembly of the amphiphilic block copolymer polyisoprene-block-polyethylene oxide (PI-b -PEO) which compartmentalises TiO2 crystallisation, preventing the collapse of porosity at temperatures up to 700 degrees C. The systematic study of the temperature dependence on DSC performance reveals a parameter trade-off: high temperature annealed anatase consisted of larger crystallites and had a higher conductivity, but this came at the expense of a reduced specific surface area. While the reduction in specific surface areas was found to be detrimental for liquid-electrolyte DSC performance, solid-state DSCs benefitted from the increased anatase conductivity and exhibited a performance increase by a factor of three.
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