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Low Band Gap Polymer Solar Cells With Minimal Voltage Losses
- Source :
- Advanced Energy Materials. 6:1600148
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- One of the factors limiting the performance of organic solar cells (OSCs) is their large energy losses (E loss) in the conversion from photons to electrons, typically believed to be around 0.6 eV and often higher than those of inorganic solar cells. In this work, a novel low band gap polymer PIDTT-TID with a optical gap of 1.49 eV is synthesized and used as the donor combined with PC71BM in solar cells. These solar cells attain a good power conversion efficiency of 6.7% with a high open-circuit voltage of 1.0 V, leading to the E loss as low as 0.49 eV. A systematic study indicates that the driving force in this donor and acceptor system is sufficient for charge generation with the low E loss. This work pushes the minimal E loss of OSCs down to 0.49 eV, approaching the values of some inorganic and hybrid solar cells. It indicates the potential for further enhancement of the performance of OSCs by improving their V oc since the E loss can be minimized. Refereed/Peer-reviewed
- Subjects :
- energy dissipation
organic polymers
Materials science
Organic solar cell
Band gap
inorganic solar cells
02 engineering and technology
010402 general chemistry
01 natural sciences
Polymer solar cell
power conversion efficiencies
low band gap
conjugated polymers
polymer solar cellscharge generation
General Materials Science
Theory of solar cells
donor and acceptor
Renewable Energy, Sustainability and the Environment
business.industry
Energy conversion efficiency
organic solar cells
low bandgap polymers
Hybrid solar cell
open circuit voltage
021001 nanoscience & nanotechnology
Acceptor
hybrid solar cells
0104 chemical sciences
Multiple exciton generation
energy gap
Optoelectronics
organic photovoltaics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 16146832
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Advanced Energy Materials
- Accession number :
- edsair.doi.dedup.....5d825b4df18a04e7fb9cb8c3c7ab8fba