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- Park, Young S.
- Advanced Organic Materials Lab.
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Effects of heteroatom substitution in conjugated heterocyclic compounds on photovoltaic performance: from sulfur to tellurium
- Author(s)
- Park, Y. S., Kale, T. S., Nam, C. -Y., Choi, D., Grubbs, R. B.
- Issued Date
- 2014-07
- Citation
- CHEMICAL COMMUNICATIONS, v.50, no.59, pp.7964 - 7967
- Abstract
- We report a general strategy for fine-tuning the bandgap of donor-acceptor-donor based organic molecules by modulating the electron-donating ability of the donor moiety by changing the benzochalcogenophene donor groups from benzothiophenes to benzoselenophenes to benzotellurophenes. These molecules show red-shifts in absorption and external quantum efficiency maxima from sulfur to selenium to tellurium. In bulk heterojunction solar cell devices, the benzoselenophene derivative shows a power conversion efficiency as high as 5.8% with PC61BM as the electron acceptor
- Publisher
- ROYAL SOC CHEMISTRY
- ISSN
- 1359-7345
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