journal article·2021-06

A Quinoxaline‐Based D–A Copolymer Donor Achieving 17.62% Efficiency of Organic Solar Cells

Can Zhu, Lei Meng, Jinyuan Zhang, Shucheng Qin, Wenbin Lai, Beibei Qiu, Jun Yuan, Yan Wan, Wenchao Huang, Yongfang Li

Advanced Materials· Volume 33· Issue 23
Publisher page

Abstract

Abstract Side‐chain engineering has been an effective strategy in tuning electronic energy levels, intermolecular interaction, and aggregation morphology of organic photovoltaic materials, which is very important for improving the power conversion efficiency (PCE) of organic solar cells (OSCs). In this work, two D–A copolymers, PBQ5 and PBQ6, are designed and synthesized based on bithienyl‐benzodithiophene (BDTT) as the donor (D) unit, difluoroquinoxaline (DFQ) with different side chains as the acceptor (A) unit, and thiophene as the π‐bridges. PBQ6 with two alkyl‐substituted fluorothiophene side chains on the DFQ units possesses redshifted absorption, stronger intermolecular interaction, and higher hole mobility than PBQ5 with two alkyl side chains on the DFQ units. The blend film of the PBQ6 donor with the Y6 acceptor shows higher and balanced hole/electron mobilities, less charge carrier recombination, and more favorable aggregation morphology. Therefore, the OSC based on PBQ6:Y6 achieves a PCE as high as 17.62% with a high fill factor of 77.91%, which is significantly higher than the PCE (15.55%) of the PBQ5:Y6‐based OSC. The PCE of 17.62% is by far one of the highest efficiencies for the binary OSCs with polymer donor and Y6 acceptor.
Source: crossref · Quality: baseline

Research context

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

Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China

Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Jinhua Zhejiang 321004 China

College of Chemistry and Chemical Engineering Central South University Changsha 410083 China

College of Chemistry Beijing Normal University Beijing 100875 China

Department of Materials Science and Engineering Monash University Clayton VIC 3168 Australia

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan 528216 China

Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Australian Renewable Energy Agency

References (59)

Show source-provided references
1. 10.1021/ar200244610.1021/ar2002446 ↗
2. 10.1038/nphoton.2012.1110.1038/nphoton.2012.11 ↗
3. 10.1002/adma.20140431710.1002/adma.201404317 ↗
4. 10.1038/nenergy.2015.2710.1038/nenergy.2015.27 ↗
5. 10.1016/j.joule.2019.01.00410.1016/j.joule.2019.01.004 ↗
6. 10.1038/s41467-018-03207-x10.1038/s41467-018-03207-x ↗
7. 10.1039/C9EE02531F10.1039/C9EE02531F ↗
8. 10.1016/j.joule.2019.06.01610.1016/j.joule.2019.06.016 ↗
9. 10.1002/adma.20180715910.1002/adma.201807159 ↗
10. 10.1002/adma.20190451210.1002/adma.201904512 ↗
11. 10.1016/j.joule.2020.05.01010.1016/j.joule.2020.05.010 ↗
12. 10.1007/s11426-020-9799-410.1007/s11426-020-9799-4 ↗
13. 10.1039/D0EE00862A10.1039/D0EE00862A ↗
14. 10.1002/adma.20190820510.1002/adma.201908205 ↗
15. 10.1021/acsenergylett.0c0142110.1021/acsenergylett.0c01421 ↗
16. 10.1016/j.joule.2019.09.01010.1016/j.joule.2019.09.010 ↗
17. 10.1002/anie.20201059610.1002/anie.202010596 ↗
18. 10.1038/s41467-020-16509-w10.1038/s41467-020-16509-w ↗
19. 10.1039/C9EE01890E10.1039/C9EE01890E ↗
20. Du J. · Angew. Chem., Int. Ed. · 2020 · 59 · 19181
21. 10.1002/adma.20150211010.1002/adma.201502110 ↗
22. 10.1007/s11426-019-9669-310.1007/s11426-019-9669-3 ↗
23. 10.1021/acsenergylett.0c0093910.1021/acsenergylett.0c00939 ↗
24. 10.1007/s11426-020-9805-710.1007/s11426-020-9805-7 ↗
25. 10.1002/adma.20190187210.1002/adma.201901872 ↗
26. 10.1038/s41467-020-18378-910.1038/s41467-020-18378-9 ↗
27. 10.1016/j.nanoen.2020.10527210.1016/j.nanoen.2020.105272 ↗
28. 10.1038/s41467-020-20580-810.1038/s41467-020-20580-8 ↗
29. 10.1039/C9EE03710A10.1039/C9EE03710A ↗
30. 10.1039/D0EE02516J10.1039/D0EE02516J ↗
31. 10.1002/adma.20200234410.1002/adma.202002344 ↗
32. 10.1002/aenm.20180253010.1002/aenm.201802530 ↗
33. 10.1021/ma301900h10.1021/ma301900h ↗
34. 10.1002/adma.20160159510.1002/adma.201601595 ↗
35. 10.1063/1.182507010.1063/1.1825070 ↗
36. 10.1021/ma500333r10.1021/ma500333r ↗
37. 10.1039/C4TA04102J10.1039/C4TA04102J ↗
38. 10.1016/j.scib.2020.01.00110.1016/j.scib.2020.01.001 ↗
39. 10.1021/acs.macromol.6b0156910.1021/acs.macromol.6b01569 ↗
40. 10.1039/C6TC05381E10.1039/C6TC05381E ↗
41. 10.1021/acs.macromol.8b0032610.1021/acs.macromol.8b00326 ↗
42. 10.1021/jacs.9b0993910.1021/jacs.9b09939 ↗
43. 10.1039/C6CC01771A10.1039/C6CC01771A ↗
44. 10.1007/s11426-019-9599-110.1007/s11426-019-9599-1 ↗
45. 10.1021/acs.chemmater.0c0045910.1021/acs.chemmater.0c00459 ↗
46. 10.1021/ar500074310.1021/ar5000743 ↗
47. 10.1002/aenm.20180268610.1002/aenm.201802686 ↗
48. 10.1002/adma.20180086810.1002/adma.201800868 ↗
49. 10.1002/anie.20110331310.1002/anie.201103313 ↗
50. 10.1002/adma.20100431110.1002/adma.201004311 ↗
51. 10.1103/PhysRevB.82.24520710.1103/PhysRevB.82.245207 ↗
52. 10.1002/aenm.20140134510.1002/aenm.201401345 ↗
53. 10.1016/j.joule.2019.12.01610.1016/j.joule.2019.12.016 ↗
54. 10.1002/aenm.20130129010.1002/aenm.201301290 ↗
55. 10.1002/adma.20190837310.1002/adma.201908373 ↗
56. 10.1002/adma.20190548010.1002/adma.201905480 ↗
57. 10.1002/adma.20190632410.1002/adma.201906324 ↗
58. 10.1021/acs.accounts.5b0032710.1021/acs.accounts.5b00327 ↗
59. 10.1021/acs.chemmater.7b0253610.1021/acs.chemmater.7b02536 ↗