journal article·2025-10-10Open access

Redox Shuttle-Stabilized Tin–Lead Perovskites for All-Perovskite Tandem Solar Cells

Chengjian Yuan, Mingqian Chen, Deng Wang, Jie Zeng, Jiarong Wang, Xiaofeng Huang, Kai-kai Liu, Tao Shen, Xia Lei, Ziyao Yue, Yiran Hao, Sai-Wing Tsang, Qin Hu, Baomin Xu, Alex K.-Y. Jen

ACS Energy Letters· Volume 10· Issue 10

Abstract

Tin–lead (Sn–Pb) mixed perovskite solar cells (PSCs) emerge as essential subcells for all-perovskite tandem devices. However, their efficiency and stability are compromised by the facile oxidation of Sn 2+ to Sn 4+ and substantial defect density. In this work, we introduced tris(2-carboxyethyl) phosphine (TCEP) as a redox shuttle to accelerate the redox-reaction-enabled self-healing of Sn–Pb perovskite to recover its original state under illumination. Meanwhile, TCEP can regulate the crystallization kinetics due to the coordination interaction with metal cations, markedly enhancing the film quality. Benefiting from the multifunctionality of TCEP, the champion single-junction Sn–Pb PSC delivers an improved power conversion efficiency (PCE) of 23.86% while maintaining 90% of its initial PCE after 563 h of maximum power point tracking (MPPT) under illumination. Moreover, the all-perovskite tandem cell with TCEP exhibits a champion PCE of 28.86% and retains 80% of its initial PCE after 1000 h under continuous illumination.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Conducting polymers and applications

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

Affiliations

Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China

Department of Materials Science and Engineering, and SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, 1088, Xueyuan Avenue, Shenzhen 518055, China

Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China

School of Microelectronics, University of Science and Technology of China, 96, JinZhai Road, Hefei 230026, China

Hong Kong Institute for Clean Energy, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China

State Key Laboratory of Marine Environmental Health, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China

Funding

Environment and Ecology Bureau · Research Grants Council, University Grants Committee · Innovation and Technology Commission · City University of Hong Kong

References (45)

Show source-provided references
1. 10.1126/science.adj708110.1126/science.adj7081 ↗
2. 10.1038/s41586-024-08073-w10.1038/s41586-024-08073-w ↗
3. 10.1002/adma.20231434110.1002/adma.202314341 ↗
4. 10.1021/ja809598r10.1021/ja809598r ↗
5. 10.1002/pip.386710.1002/pip.3867 ↗
6. 10.1002/adma.20241167710.1002/adma.202411677 ↗
7. 10.1039/D1CS00841B10.1039/D1CS00841B ↗
8. 10.1038/s41560-018-0190-410.1038/s41560-018-0190-4 ↗
9. 10.1038/s41563-024-02073-x10.1038/s41563-024-02073-x ↗
10. 10.1038/s41467-019-08918-310.1038/s41467-019-08918-3 ↗
11. 10.1039/D1TA04922D10.1039/D1TA04922D ↗
12. 10.1038/s41560-019-0466-310.1038/s41560-019-0466-3 ↗
13. 10.1021/jacs.6b0925710.1021/jacs.6b09257 ↗
14. 10.1002/adma.20231217010.1002/adma.202312170 ↗
15. 10.1002/advs.20241140310.1002/advs.202411403 ↗
16. 10.1002/adma.20241562710.1002/adma.202415627 ↗
17. 10.1126/science.adj608810.1126/science.adj6088 ↗
18. 10.1038/s41467-024-46679-w10.1038/s41467-024-46679-w ↗
19. 10.1002/adma.20241056410.1002/adma.202410564 ↗
20. 10.1038/s41560-024-01451-810.1038/s41560-024-01451-8 ↗
21. 10.1016/j.joule.2022.03.00510.1016/j.joule.2022.03.005 ↗
22. 10.1126/science.aau570110.1126/science.aau5701 ↗
23. 10.1002/adma.20240580710.1002/adma.202405807 ↗
24. 10.1002/anie.20231744610.1002/anie.202317446 ↗
25. 10.1002/aenm.20210153910.1002/aenm.202101539 ↗
26. 10.1002/anie.20230809310.1002/anie.202308093 ↗
27. 10.1016/j.molstruc.2019.12726810.1016/j.molstruc.2019.127268 ↗
28. 10.1002/anie.20250118810.1002/anie.202501188 ↗
29. 10.1126/science.aay969810.1126/science.aay9698 ↗
30. 10.1038/s41586-024-08546-y10.1038/s41586-024-08546-y ↗
31. 10.1016/j.joule.2022.02.00310.1016/j.joule.2022.02.003 ↗
32. 10.1021/acsenergylett.4c0311910.1021/acsenergylett.4c03119 ↗
33. 10.1038/s41566-023-01231-y10.1038/s41566-023-01231-y ↗
34. 10.1038/s41467-024-55492-410.1038/s41467-024-55492-4 ↗
35. 10.1002/aenm.20230076010.1002/aenm.202300760 ↗
36. 10.1126/sciadv.abb241210.1126/sciadv.abb2412 ↗
37. 10.1038/s41467-024-51361-210.1038/s41467-024-51361-2 ↗
38. 10.1021/acs.jpclett.8b0289210.1021/acs.jpclett.8b02892 ↗
39. 10.1021/acs.accounts.5b0044010.1021/acs.accounts.5b00440 ↗
40. 10.1038/s43246-023-00379-y10.1038/s43246-023-00379-y ↗
41. 10.1039/D2EE00288D10.1039/D2EE00288D ↗
42. 10.1038/s41467-020-17868-010.1038/s41467-020-17868-0 ↗
43. 10.1002/adma.20210592010.1002/adma.202105920 ↗
44. 10.1021/acsenergylett.3c0201810.1021/acsenergylett.3c02018 ↗
45. 10.1039/D4EE03045A10.1039/D4EE03045A ↗