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- Title
Systematic Investigation of Porphyrin-Thiophene Conjugates for Ternary Bulk Heterojunction Solar Cells.
- Authors
Keawsongsaeng, Wittawat; Gasiorowski, Jacek; Denk, Patrick; Oppelt, Kerstin; Apaydin, Dogukan H.; Rojanathanes, Rojrit; Hingerl, Kurt; Scharber, Markus; Sariciftci, Niyazi Serdar; Thamyongkit, Patchanita
- Abstract
A family of porphyrins and benzoporphyrins bearing phenyl, thiophenyl, or bithiophenyl groups at their meso-positions are synthesized and systematically investigated for their potential use in bulk heterojunction solar cells (BHJ-SCs). Comparative studies of these compounds show that the introduction of the thiophenyl and bithiophenyl groups, and the extension of the porphyrin π-conjugated system significantly affect both photophysical and electrochemical properties. Binary conventional and ternary converted BHJ-SCs based on these compounds are fabricated and studied. Results show that remarkable enhancement of the device efficiency is achieved by using the thiophene-containing benzoporphyrin derivatives as additives for a poly(3-hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester blend in the inverted BHJ-SCs. The optimum BHJ-SC exhibits a maximum energy conversion efficiency of 4.3%, corresponding to 19% enhancement of the conversion efficiency as compared with the benchmark BHJ-SCs.
- Subjects
PORPHYRIN synthesis; THIOPHENES; CHEMICAL synthesis; SOLAR cell efficiency; TERNARY system; ENERGY conversion; HETEROJUNCTIONS; CONJUGATED polymers
- Publication
Advanced Energy Materials, 2016, Vol 6, Issue 20, pn/a
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201600957