journal article·2024-11Open access

19.35% Efficient Binary Bulk‐Heterojunction Organic Photovoltaic Enabled by Optimizing Bromine‐Substituted Self‐Assembled Carbazole Based Molecules

Xiaokang Sun, Chenyang Zhang, Yiguo Yao, Jie Lv, Jie Yao, Xiaoman Ding, Manjia Lu, Liangxiang Zhu, Guangye Zhang, Haoran Lin, Yumeng Shi, Kai Wang, Chunming Yang, Xiaoping Ouyang, Hanlin Hu, Iain McCulloch, Yuanbao Lin

Advanced Functional Materials· Volume 34· Issue 45

Abstract

Abstract A bromine‐substituted [2‐(9H‐Carbazol‐9‐yl) ethyl] phosphonic acid, 1Br‐2PACz, is designed as hole‐selective self‐assembled monolayers (SAMs), contributing to an outstanding power conversion efficiency (PCE) of 19.35% for binary bulk‐heterojunction (BHJ) based organic solar cells (OSCs). As compared to the previous high‐performance 2Br‐2PACz SAMs, 1Br‐2PACz molecules can effectively reduce the interaction of the SAM with the BTP‐eC9 nonfullerene acceptors with a decreased binding energy, resulting in the suppressed vertical self‐aggregation of BTP‐eC9 small molecules as the bottom side of PM6:BTP‐eC9 BHJ during the solidification process. There is decreased energetic disorder within photoactive layer together with more efficient charge transfer and suppressed non‐radiative recombination. Furthermore, five additional binary BHJ systems are applied in 1Br‐2PACz SAM‐based OSCs, exhibiting continuously superior performance as compared to the reference cells with conventional PEDOT:PSS hole transport layer. This work underscores the potential of advancing OSCs by fine‐tuning SAMs through halogenation strategies to improve active layer morphology and overall device performance.
Source: crossref · Quality: baseline

Research context

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

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

Affiliations

Hoffmann Institute of Advanced Materials Shenzhen Polytechnic University 7098 Liuxian Boulevard Shenzhen 518055 P. R. China

School of Materials Science and Engineering Xiangtan University Xiangtan 411105 P. R. China

College of Materials Science and Engineering Qingdao University Qingdao 266000 P. R. China

Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) Xi'an 710072 P. R. China

Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 P. R. China

University of Chinese Academy of Sciences Beijing 100049 P. R. China

College of New Materials and New Energies Shenzhen Technology University Shenzhen 518118 P. R. China

College of Electronics and Information Engineering Shenzhen University Shenzhen 518060 P. R. China

Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 P. R. China

Andlinger Center for Energy and the Environment Princeton University Princeton NJ 08544 USA

Department of Chemistry University of Oxford Oxford OX1 3TA UK

College of Education Sciences The Hong Kong University of Science and Technology (Guangzhou) Guangzhou 510000 P. R. China

Funding

National Natural Science Foundation of China · Shenzhen Science and Technology Innovation Program · China Postdoctoral Science Foundation · Basic and Applied Basic Research Foundation of Guangdong Province

References (51)

Show source-provided references
1. 10.1038/s41578-022-00514-010.1038/s41578-022-00514-0 ↗
2. 10.1038/s41578-023-00606-510.1038/s41578-023-00606-5 ↗
3. 10.1002/adma.20240034210.1002/adma.202400342 ↗
4. 10.1038/s41560-024-01557-z10.1038/s41560-024-01557-z ↗
5. 10.1002/adma.20240669010.1002/adma.202406690 ↗
6. 10.1002/anie.20240700710.1002/anie.202407007 ↗
7. 10.1021/jacs.4c0150310.1021/jacs.4c01503 ↗
8. 10.1038/nphoton.2011.31710.1038/nphoton.2011.317 ↗
9. 10.1021/cm034650o10.1021/cm034650o ↗
10. 10.1039/c4ee00022f10.1039/c4ee00022f ↗
11. 10.1038/s41467-020-16509-w10.1038/s41467-020-16509-w ↗
12. 10.1038/s41560-022-00997-910.1038/s41560-022-00997-9 ↗
13. 10.1002/adma.20180180110.1002/adma.201801801 ↗
14. 10.1002/aenm.20200074310.1002/aenm.202000743 ↗
15. 10.1039/D2EE04183A10.1039/D2EE04183A ↗
16. 10.1039/C9MH01978B10.1039/C9MH01978B ↗
17. 10.1063/1.131534410.1063/1.1315344 ↗
18. 10.1002/solr.20230033210.1002/solr.202300332 ↗
19. 10.1021/acsmaterialslett.4c0084410.1021/acsmaterialslett.4c00844 ↗
20. 10.1002/aenm.20230069410.1002/aenm.202300694 ↗
21. 10.1002/aenm.20180189210.1002/aenm.201801892 ↗
22. 10.1021/acsenergylett.3c0127510.1021/acsenergylett.3c01275 ↗
23. 10.1021/acsenergylett.0c0142110.1021/acsenergylett.0c01421 ↗
24. 10.1002/cssc.20210070710.1002/cssc.202100707 ↗
25. 10.1021/acsami.2c0190010.1021/acsami.2c01900 ↗
26. 10.1016/j.nanoen.2021.10681410.1016/j.nanoen.2021.106814 ↗
27. 10.1002/aenm.20220250310.1002/aenm.202202503 ↗
28. 10.1002/adma.20190820510.1002/adma.201908205 ↗
29. 10.1021/acs.chemrev.6b0006110.1021/acs.chemrev.6b00061 ↗
30. 10.1039/b808004f10.1039/b808004f ↗
31. 10.1021/acsnano.8b0043910.1021/acsnano.8b00439 ↗
32. 10.1002/aenm.20230052410.1002/aenm.202300524 ↗
33. 10.1038/s41467-022-30225-710.1038/s41467-022-30225-7 ↗
34. 10.1002/anie.20210262210.1002/anie.202102622 ↗
35. 10.1002/adma.20210467810.1002/adma.202104678 ↗
36. 10.1016/j.joule.2018.11.02310.1016/j.joule.2018.11.023 ↗
37. 10.1021/ja504537v10.1021/ja504537v ↗
38. 10.1002/adma.20130418710.1002/adma.201304187 ↗
39. 10.1002/solr.20200033710.1002/solr.202000337 ↗
40. 10.1002/adma.20230123110.1002/adma.202301231 ↗
41. 10.1002/inf2.1253010.1002/inf2.12530 ↗
42. 10.1063/1.498224210.1063/1.4982242 ↗
43. 10.1002/adma.20220090710.1002/adma.202200907 ↗
44. 10.1002/adfm.20230110810.1002/adfm.202301108 ↗
45. 10.1038/s41467-023-37526-510.1038/s41467-023-37526-5 ↗
46. 10.1021/acsenergylett.3c0117810.1021/acsenergylett.3c01178 ↗
47. 10.1002/aenm.20230004610.1002/aenm.202300046 ↗
48. 10.1002/agt2.2910.1002/agt2.29 ↗
49. 10.1002/adfm.20230330710.1002/adfm.202303307 ↗
50. 10.1016/j.joule.2024.03.01310.1016/j.joule.2024.03.013 ↗
51. 10.1002/adfm.20221187310.1002/adfm.202211873 ↗