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Metallated conjugated polymers as a new avenue towards high-efficiency polymer solar cells.
- Source :
- Nature Materials; Jul2007, Vol. 6 Issue 7, p521-527, 7p, 2 Diagrams, 4 Graphs
- Publication Year :
- 2007
-
Abstract
- Bulk heterojunction solar cells have been extensively studied owing to their great potential for cost-effective photovoltaic devices. Although recent advances resulted in the fabrication of poly(3-hexylthiophene) (P3HT)/fullerene derivative based solar cells with efficiencies in the range 4.4–5.0%, theoretical calculations predict that the development of novel donor materials with a lower bandgap is required to exceed the power-conversion efficiency of 10%. However, all of the lower bandgap polymers developed so far have failed to reach the efficiency of P3HT-based cells. To address this issue, we synthesized a soluble, intensely coloured platinum metallopolyyne with a low bandgap of 1.85 eV. The solar cells, containing metallopolyyne/fullerene derivative blends as the photoactive material, showed a power-conversion efficiency with an average of 4.1%, without annealing or the use of spacer layers needed to achieve comparable efficiency with P3HT. This clearly demonstrates the potential of metallated conjugated polymers for efficient photovoltaic devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- SOLAR cells
POLYMERS
CONJUGATED polymers
PHOTOVOLTAIC cells
FULLERENES
POLYYNES
Subjects
Details
- Language :
- English
- ISSN :
- 14761122
- Volume :
- 6
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Nature Materials
- Publication Type :
- Academic Journal
- Accession number :
- 25586852
- Full Text :
- https://doi.org/10.1038/nmat1909