DataVXACS Energy LettersPaper
journal article·2020-06-12Open access

Readily Accessible Benzo[d]thiazole Polymers for Nonfullerene Solar Cells with >16% Efficiency and Potential Pitfalls

Liang-Wen Feng, Jianhua Chen, Subhrangsu Mukherjee, Vinod K. Sangwan, Wei Huang, Yao Chen, Ding Zheng, Joseph W. Strzalka, Gang Wang, Mark C. Hersam, Dean DeLongchamp, Antonio Facchetti, Tobin J. Marks

ACS Energy Letters· Volume 5· Issue 6
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Source abstract

Abstract

Here we report facile, high-yield synthetic access to the difluoro BTA building block, 4,7-bis(5-bromo-4-(2-hexyl-decyl)-thiophen-2-yl)-5,6-difluoro-2-(pentadecan-7-yl)-benzo[d]thiazole (BTAT-2f), for use in donor (D)–acceptor 1 (A1)–D–acceptor 2 (A2) polymers [D = bithiophene; A1 = BTA-2f; A2 = benzothiadiazole (BT) derivative] for organic solar cells (OSCs). Fine tuning of polymer optical and electronic properties is achieved by incrementally varying the A2 fluorination level. Bulk-heterojunction (BHJ) PBTATBT-4f:Y6 solar cells deliver a noteworthy power conversion (PCE) efficiency of 16.08% (Voc = 0.81 V; Jsc = 27.25 mAcm–2; FF = 72.70%) without processing additives. In contrast, PBTATBT-2f:Y6 exhibits an irregular morphology and low PCE, ascribable to cocrystal formation-induced recombination, which is unprecedented for nonfullerene (NFA) OSCs. This result should be of guiding significance for future NFA design.
Source: openalex_inverted_index · Quality: baseline

Research context

Polymers

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, Center for Light Energy-Activated Redox Processes, and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States

Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States

X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States

Flexterra Corporation, 8025 Lamon Avenue, Skokie, Illinois 60077, United States

Funding

National Institute of Standards and Technology · Basic Energy Sciences · Air Force Office of Scientific Research · Office of Science · National Natural Science Foundation of China

References (46)

Show source-provided references
1. 10.1002/adma.20180038810.1002/adma.201800388 ↗
2. 10.1021/cr050149z10.1021/cr050149z ↗
3. 10.1038/353737a010.1038/353737a0 ↗
4. 10.1038/nmat506310.1038/nmat5063 ↗
5. 10.1038/s41566-018-0104-910.1038/s41566-018-0104-9 ↗
6. 10.1038/natrevmats.2018.310.1038/natrevmats.2018.3 ↗
7. 10.1039/C6QM00247A10.1039/C6QM00247A ↗
8. 10.1016/j.scib.2020.01.00110.1016/j.scib.2020.01.001 ↗
9. 10.1016/j.joule.2019.01.00410.1016/j.joule.2019.01.004 ↗
10. 10.1038/s41467-019-10351-510.1038/s41467-019-10351-5 ↗
11. 10.1007/s11426-019-9457-510.1007/s11426-019-9457-5 ↗
12. 10.1002/anie.20190746710.1002/anie.201907467 ↗
13. 10.1063/1.364413410.1063/1.3644134 ↗
14. 10.1002/adma.20190296510.1002/adma.201902965 ↗
15. 10.1021/ma800820r10.1021/ma800820r ↗
16. 10.1021/jacs.9b0993910.1021/jacs.9b09939 ↗
17. 10.1002/adma.20190548010.1002/adma.201905480 ↗
18. Ali R. · J. Chem. · 2013 · 2013 · 345198
19. 10.1016/0304-3940(88)90125-510.1016/0304-3940(88)90125-5 ↗
20. 10.2174/092986704345553010.2174/0929867043455530 ↗
21. 10.1002/jms.51110.1002/jms.511 ↗
22. 10.1016/j.synthmet.2008.12.01910.1016/j.synthmet.2008.12.019 ↗
23. 10.1016/j.dyepig.2012.11.00410.1016/j.dyepig.2012.11.004 ↗
24. 10.1021/acsami.8b0364310.1021/acsami.8b03643 ↗
25. 10.1002/advs.20180174310.1002/advs.201801743 ↗
26. 10.1021/acs.chemmater.6b0281310.1021/acs.chemmater.6b02813 ↗
27. 10.1021/acs.chemrev.7b0008410.1021/acs.chemrev.7b00084 ↗
28. 10.1007/s10953-009-9476-210.1007/s10953-009-9476-2 ↗
29. 10.1021/acsami.6b0823310.1021/acsami.6b08233 ↗
30. 10.1063/1.474560210.1063/1.4745602 ↗
31. 10.1039/C8EE01559G10.1039/C8EE01559G ↗
32. 10.1002/adfm.20170380510.1002/adfm.201703805 ↗
33. 10.1021/acsami.9b0388410.1021/acsami.9b03884 ↗
34. 10.1039/c0cp02249g10.1039/c0cp02249g ↗
35. 10.1038/ncomms808310.1038/ncomms8083 ↗
36. 10.1016/j.solmat.2008.06.00110.1016/j.solmat.2008.06.001 ↗
37. 10.1021/acs.jpcc.8b0982510.1021/acs.jpcc.8b09825 ↗
38. 10.1002/adma.20150339510.1002/adma.201503395 ↗
39. 10.1002/adfm.20080168410.1002/adfm.200801684 ↗
40. 10.1021/nl902380810.1021/nl9023808 ↗
41. 10.1002/adma.20190386810.1002/adma.201903868 ↗
42. 10.1039/C7SE00601B10.1039/C7SE00601B ↗
43. 10.1021/jacs.9b0146510.1021/jacs.9b01465 ↗
44. Nelson J. · 200310.1142/p276 ↗
45. 10.1002/aenm.20200063510.1002/aenm.202000635 ↗
46. 10.1038/ncomms832710.1038/ncomms8327 ↗