Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO2 crystallisation

Title data

Guldin, Stefan ; Hüttner, Sven ; Tiwana, Priti ; Orilall, M. Christopher ; Ulgut, Burak ; Stefik, Morgan ; Docampo, Pablo ; Kolle, Matthias ; Divitini, Giorgio ; Ducati, Caterina ; Redfern, Simon A. T. ; Snaith, Henry J. ; Wiesner, Ulrich ; Eder, Dominik ; Steiner, Ullrich:
Improved conductivity in dye-sensitised solar cells through block-copolymer confined TiO2 crystallisation.
In: Energy & Environmental Science. Vol. 4 (2011) Issue 1 . - pp. 225-233.
ISSN 1754-5706
DOI: https://doi.org/10.1039/C0EE00362J

Official URL:

Abstract in another language

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 °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.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Junior Professor Solar Energy - Juniorprof. Dr. Sven Hüttner Profile Fields > Advanced Fields > Polymer and Colloid Science Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Junior Professor Solar Energy Profile Fields Profile Fields > Advanced Fields Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT:	No
DDC Subjects:	500 Science > 530 Physics 500 Science > 540 Chemistry
Date Deposited:	12 Jan 2018 10:23
Last Modified:	25 Mar 2024 07:58
URI:	https://eref.uni-bayreuth.de/id/eprint/41712