journal article·2020-05-08Open access

Vertically Aligned 2D/3D Pb–Sn Perovskites with Enhanced Charge Extraction and Suppressed Phase Segregation for Efficient Printable Solar Cells

Chaohui Li, Yamin Pan, Jinlong Hu, Shudi Qiu, Cuiling Zhang, Yuzhao Yang, Shi Chen, Xianhu Liu, Christoph J. Brabec, Mohammad Khaja Nazeeruddin, Yaohua Mai, Fei Guo

ACS Energy Letters· Volume 5· Issue 5

Abstract

The concept of mixed 2D/3D heterostructures has emerged as an effective method for improving the stability of lead halide perovskite solar cells, which has been, however, rarely reported in lead–tin (Pb–Sn) mixed perovskite devices. Here, we report a scalable process for depositing mixed 2D/3D Pb–Sn perovskite solar cells that deliver remarkably enhanced efficiency and stability compared to their 3D counterparts. The incorporation of a small amount (3.75%) of an organic cation 2-(4-fluorophenyl)ethylammonium iodide induces the growth of highly oriented Pb–Sn perovskite crystals perpendicularly aligned with the substrate. Moreover, for the first time, phase segregation is observed in pristine 3D Pb–Sn perovskites, which is suppressed due to the presence of the 2D perovskites. Accordingly, a high current density of 28.42 mA cm–2 is obtained due to the markedly enhanced spectral response and charge extraction. Eventually, mixed 2D/3D Pb–Sn perovskite devices with a band gap of 1.33 eV yield efficiencies as high as 17.51% and in parallel exhibit good stability.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Quantum Dots Synthesis And Properties

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

Affiliations

Institute of New Energy Technology, College of Information Science and Technology, Jinan University, Guangzhou 510632, China

College of Materials Science and Engineering, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China

Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander University Erlangen-Nürnberg, Martensstrasse 7, 91058 Erlangen, Germany

Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne Valais Wallis, Sion CH-1951, Switzerland

Funding

National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Key Laboratory of Materials Processing and Mold, Zhengzhou University

References (57)

Show source-provided references
1. 10.1021/acs.accounts.6b0049210.1021/acs.accounts.6b00492 ↗
2. Best Research-Cell Efficiencies. https://www.nrel.gov/pv/assets/pdfs/best-research-cell-efficiencies.20190923.pdf.
3. 10.1002/aenm.20190265010.1002/aenm.201902650 ↗
4. 10.1039/C8CS00853A10.1039/C8CS00853A ↗
5. 10.1016/j.solmat.2015.12.02510.1016/j.solmat.2015.12.025 ↗
6. 10.1002/aenm.20150096310.1002/aenm.201500963 ↗
7. 10.1038/s41467-018-07382-910.1038/s41467-018-07382-9 ↗
8. 10.1002/anie.20140646610.1002/anie.201406466 ↗
9. 10.1038/s41578-018-0065-010.1038/s41578-018-0065-0 ↗
10. 10.1021/jacs.5b0379610.1021/jacs.5b03796 ↗
11. 10.1002/adfm.20180648210.1002/adfm.201806482 ↗
12. 10.1002/adfm.20170692310.1002/adfm.201706923 ↗
13. 10.1002/aenm.20180259510.1002/aenm.201802595 ↗
14. 10.1002/aenm.20170339210.1002/aenm.201703392 ↗
15. 10.1002/aenm.20170271410.1002/aenm.201702714 ↗
16. 10.1016/j.nanoen.2019.03.01410.1016/j.nanoen.2019.03.014 ↗
17. 10.1016/j.nanoen.2019.10409910.1016/j.nanoen.2019.104099 ↗
18. 10.1002/aenm.20190247010.1002/aenm.201902470 ↗
19. 10.1021/jacs.5b1174010.1021/jacs.5b11740 ↗
20. 10.1039/C8TA12476K10.1039/C8TA12476K ↗
21. 10.1038/nature1830610.1038/nature18306 ↗
22. 10.1002/adma.20190388910.1002/adma.201903889 ↗
23. 10.1002/adma.20190384810.1002/adma.201903848 ↗
24. 10.1002/aenm.20190156610.1002/aenm.201901566 ↗
25. 10.1002/adma.20190167310.1002/adma.201901673 ↗
26. 10.1016/j.joule.2018.09.01210.1016/j.joule.2018.09.012 ↗
27. 10.1038/s41467-018-05454-410.1038/s41467-018-05454-4 ↗
28. 10.1002/adma.20180532310.1002/adma.201805323 ↗
29. 10.1038/nenergy.2017.13510.1038/nenergy.2017.135 ↗
30. 10.1038/s41560-018-0190-410.1038/s41560-018-0190-4 ↗
31. 10.1038/nenergy.2017.1810.1038/nenergy.2017.18 ↗
32. 10.1002/adma.20160269610.1002/adma.201602696 ↗
33. 10.1126/science.aav791110.1126/science.aav7911 ↗
34. 10.1038/s41560-019-0466-310.1038/s41560-019-0466-3 ↗
35. 10.1002/adma.20190810710.1002/adma.201908107 ↗
36. 10.1021/acsenergylett.8b0221610.1021/acsenergylett.8b02216 ↗
37. 10.1021/acsenergylett.8b0141110.1021/acsenergylett.8b01411 ↗
38. 10.1016/j.isci.2018.11.00310.1016/j.isci.2018.11.003 ↗
39. 10.1002/adfm.20180460310.1002/adfm.201804603 ↗
40. 10.1002/adfm.20180880110.1002/adfm.201808801 ↗
41. 10.1039/C8TA05444D10.1039/C8TA05444D ↗
42. 10.1002/advs.20190106710.1002/advs.201901067 ↗
43. 10.1038/s41467-019-08958-910.1038/s41467-019-08958-9 ↗
44. 10.1002/aenm.20190171910.1002/aenm.201901719 ↗
45. 10.1002/aenm.20180018510.1002/aenm.201800185 ↗
46. 10.1002/aenm.20200017310.1002/aenm.202000173 ↗
47. 10.1021/jacs.6b1258110.1021/jacs.6b12581 ↗
48. 10.1002/solr.20180035910.1002/solr.201800359 ↗
49. 10.1038/s41467-019-08843-510.1038/s41467-019-08843-5 ↗
50. 10.1002/solr.20190038910.1002/solr.201900389 ↗
51. 10.1021/acsenergylett.9b0138310.1021/acsenergylett.9b01383 ↗
52. 10.1021/acsenergylett.6b0049510.1021/acsenergylett.6b00495 ↗
53. 10.1021/acs.nanolett.8b0050510.1021/acs.nanolett.8b00505 ↗
54. 10.1002/aenm.20160033010.1002/aenm.201600330 ↗
55. 10.1002/adfm.20190096410.1002/adfm.201900964 ↗
56. 10.1002/adfm.20170744410.1002/adfm.201707444 ↗
57. 10.1038/s41560-019-0529-510.1038/s41560-019-0529-5 ↗