Abstract
Multi-layer mesoporous TiO2 prepared by screen printing is widely used for fabrication of high-efficiency dye-sensitized solar cells (DSSCs). We compare the three types of ∼10 μm thick mesoporous TiO2 films, which were screen printed as 1-, 2- and 4-layers using the same TiO2 nanocrystal paste. The layer boundary of the multi-layer mesoporous TiO2 films was observed in the cross-section SEM. The existence of a layer boundary could reduce the photoelectron diffusion length with the increase of layer number. However, the photoelectron diffusion lengths of the Z907 dye sensitized solar cells based on these different layered mesoporous TiO2 films are all longer than the film thickness. Consequently, the photovoltaic performance seems to have little dependence on the layer number of the multi-layer TiO2 based DSSCs.
Original language | American English |
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Pages (from-to) | 98167-98170 |
Number of pages | 4 |
Journal | RSC Advances |
Volume | 6 |
Issue number | 100 |
DOIs | |
State | Published - 2016 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2016.
NREL Publication Number
- NREL/JA-5900-67435
Keywords
- DSSC
- dye-sensitized solar cells
- mesoporous films