Layer-by-Layer Formation of Block-Copolymer-Derived TiO2 for Solid-State Dye-Sensitized Solar Cells
Snaith, Henry J.
KAUST Grant NumberKUS-C1-018-02
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AbstractMorphology control on the 10 nm length scale in mesoporous TiO 2 films is crucial for the manufacture of high-performance dye-sensitized solar cells. While the combination of block-copolymer self-assembly with sol-gel chemistry yields good results for very thin films, the shrinkage during the film manufacture typically prevents the build-up of sufficiently thick layers to enable optimum solar cell operation. Here, a study on the temporal evolution of block-copolymer-directed mesoporous TiO 2 films during annealing and calcination is presented. The in-situ investigation of the shrinkage process enables the establishment of a simple and fast protocol for the fabrication of thicker films. When used as photoanodes in solid-state dye-sensitized solar cells, the mesoporous networks exhibit significantly enhanced transport and collection rates compared to the state-of-the-art nanoparticle-based devices. As a consequence of the increased film thickness, power conversion efficiencies above 4% are reached. Fabrication of sufficiently thick mesoporous TiO 2 photoelectrodes with morphology control on the 10 nm length scale is essential for solid-state dye-sensitized solar cells (ss-DSC). This study of the temporal evolution of block-copolymer-directed mesoporous TiO 2 films during annealing and calcination enables the build-up of sufficiently thick films for high-performance ssDSC devices. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
CitationGuldin S, Docampo P, Stefik M, Kamita G, Wiesner U, et al. (2011) Layer-by-Layer Formation of Block-Copolymer-Derived TiO2 for Solid-State Dye-Sensitized Solar Cells. Small 8: 432–440. Available: http://dx.doi.org/10.1002/smll.201102063.
SponsorsThe authors acknowledge Dr. M. Kolle for help with graphics design and Prof. D. Eder for useful discussions. This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST), the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 246124, the EPSRC (EP/F056702/1 and EP/F065884/1), the Department of Energy (DE-FG02 87ER45298) through the Cornell Fuel Cell Institute (CFCI), and the National Science Foundation (DMR-1104773). M. S. was supported by the Cornell Fuel Cell Institute and the Energy Materials Center at Cornell (EMC2), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001086.
CollectionsPublications Acknowledging KAUST Support
- Charge collection and pore filling in solid-state dye-sensitized solar cells.
- Authors: Snaith HJ, Humphry-Baker R, Chen P, Cesar I, Zakeeruddin SM, Grätzel M
- Issue date: 2008 Oct 22
- Formation of efficient dye-sensitized solar cells by introducing an interfacial layer of long-range ordered mesoporous TiO2 thin film.
- Authors: Kim YJ, Lee YH, Lee MH, Kim HJ, Pan JH, Lim GI, Choi YS, Kim K, Park NG, Lee C, Lee WI
- Issue date: 2008 Nov 18
- Direct assembly of preformed nanoparticles and graft copolymer for the fabrication of micrometer-thick, organized TiO2 films: high efficiency solid-state dye-sensitized solar cells.
- Authors: Ahn SH, Chi WS, Park JT, Koh JK, Roh DK, Kim JH
- Issue date: 2012 Jan 24
- Graft copolymer directed synthesis of micron-thick organized mesoporous TiO2 films for solid-state dye-sensitized solar cells.
- Authors: Ahn SH, Park JT, Koh JK, Roh DK, Kim JH
- Issue date: 2011 May 28
- Highly efficient dye-sensitized solar cells of thick mesoporous titania films derived from supramolecular templating.
- Authors: Zhang Y, Xie ZB, Wang J
- Issue date: 2009 Dec 16