Dye-sensitized solar cell (DSSC) is the leading technology of low-cost solution processed solar cells with reported efficiencies in excess of 10%. However despite the huge efforts in the last two decades saturation effects are observed in their performance. Efforts so far have been concentrated towards engineering and fine-tuning of the dyes, the electrolytes and the interface of the dye to the electron acceptor, employing titania as the electron acceptor. DSSCs rely, then, on dyes for efficient light harvesting which in turn entails high fabrication costs associated to the Ru-based dyes as well as the use of 10 μm thick devices.
In NanoMatCell we propose a disruptive approach; to replace titania, a high bandgap nanostructured electrode with a novel electron accepting nanoporous semiconductor with a bandgap suitable for optimized solar harnessing and a very high absorption coefficient to allow total light absorption within 1 μm. In addition the deposition of the nanostructured platform will employ processing below 100 oC, compatible with plastic, flexible substrates and cost-effective roll-to-roll manufacturing.
We will emphasize on non-toxic high-abundance nanomaterials in order to enable successful deployment of DSSCs with targeted efficiencies in excess of 15% in electrolyte-based DSSCs and 10% in solid-state DSSCs, thanks to efficient solar harnessing offered by the novel nanocrystal solar harvesting electron acceptor.
To tackle this multidisciplinary challenge we have assembled a group of experts in the respective fields:
- Synthesis and development of novel colloidal nanocrystal materials,
- Synthesis and development of dyes for panchromatic solar harnessing,
- Synthesis and development of organic hole transport materials with improved carrier transport properties and tailored HOMO-LUMO levels
- Development of ALD-based processes for ultra-thin-film barrier layers
- Study and understanding of charge transfer kinetics in DSSCs
- Development of nanocrystal and Dye-Sensitized SC.
- Manufacturing and development of DSSC-based modules at an industrial level.