Abstract
We report a combined experimental and theoretical study on the origin of the different open circuit potentials observed in dye-sensitized solar cells using Ru(ll)-polypyridyl homoleptic and heteroleptic sensitizers. We have measured the photovoltaic data of different sensitizers and used DFT calculations to analyze the electronic structure of dye-sensitized TiO 2 nanoparticles. Heteroleptic sensitizers adsorb onto TiO 2 via a single bipyridine, leading to a TiO 2 conduction band downshift and overall reduction of the cell open circuit potential.
Original language | English (US) |
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Pages (from-to) | 3189-3195 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 7 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2007 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- Condensed Matter Physics
- Mechanical Engineering
- Bioengineering
- General Materials Science