Journal
CHEMSUSCHEM
Volume 14, Issue 17, Pages 3561-3568Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202100910
Keywords
conjugated polymers; organic solar cells; polymerization; quinoxaline; synthetic complexity
Funding
- National Science Foundation (NSF) [CBET 1934374]
- National Science Foundations [CHE-1828183]
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Conjugated polymers have a long history in organic solar cells, and a new synthetic approach towards PTQ10 has significantly reduced cost and achieved high efficiency, demonstrating promising prospects for commercialization.
Conjugated polymers have a long history of exploration and use in organic solar cells, and over the last twenty-five years, marked increases in the solar cell efficiency have been achieved. However, the synthetic complexity of these materials has also drastically increased, which makes the scalability of the highest-efficiency materials difficult. If conjugated polymers could be designed to exhibit both high efficiency and straightforward synthesis, the road to commercial reality would be more achievable. For that reason, a new synthetic approach was designed towards PTQ10 (=poly[(thiophene)-alt-(6,7-difluoro-2-(2-hexyldecyloxy)quinoxaline)]). The new synthetic approach to make PTQ10 brought a significant reduction in cost (1/7th the original) and could also easily accommodate different side chains to move towards green processing solvents. Furthermore, high-efficiency organic solar cells were demonstrated with a PTQ10:Y6 blend exhibiting approximately 15 % efficiency.
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