DataVXAdvanced Energy MaterialsPaper
journal article·2026-07-20

Sr/Pb Alloying Stabilizes Wide‐Bandgap Perovskites for Durable Fully‐Textured Perovskite/Silicon Tandem Solar Cells

Pengfei Liu, Xiaoyong Wu, Shuyi Lin, Minghao Shi, Yusheng Li, Biao Shi, Zetong Sunli, Xianzhao Wang, Yuan Luo, Ying Liu, Rui Kong, Guanlan Chen, Zhi Zhang, Pengcheng Du, Yongcai He, Shengzhi Xu, Xiaona Du, Jun Yin, Bo He, Shibin Deng, Xuewen Fu, Ying Zhao, Xiaodan Zhang

Advanced Energy Materials
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Source abstract

Abstract

ABSTRACT Double‐sided fully‐textured (3–5 µm) perovskite/silicon tandem solar cells (PS‐TSCs) emerge as a promising pathway for tandem photovoltaics due to their excellent optical management and low manufacturing costs. However, their commercialization is hindered by operational instability, largely attributable to ion migration within the wide‐bandgap perovskite top cell. Here, we report a B‐site cation alloying strategy employing strontium (Sr 2+ ) to enhance the stability of wide‐bandgap perovskites through local lattice engineering. Owing to its lower electronegativity and polarizability relative to lead (Pb 2+ ), Sr 2+ incorporation strengthens the metal‐halide bonding network, thereby forming a more rigid and ordered octahedral framework with weakened electron‐phonon coupling. The Sr/Pb alloyed perovskite films exhibit significantly enhanced stability under illumination and/or thermal stress. Fully‐textured PS‐TSCs incorporating this strategy achieve a power conversion efficiency of 31.66%. Importantly, encapsulated devices show less than 7% performance loss after more than 1391 h at maximum power point tracking, corresponding to a projected T 80 lifetime of approximately 6785 h under continuous 1‐sun illumination. Under thermal aging at 65°C, devices further demonstrate a T 90 lifetime exceeding 1100 h.
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Research context

Metals & alloysElectronic materials

OpenAlex topics: Perovskite Materials and Applications · TiO2 Photocatalysis and Solar Cells · Thin-Film Transistor Technologies

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

Affiliations

Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and Cells Nankai University Tianjin People's Republic of China

Tianjin Key Laboratory of Efficient Utilization of Solar Energy Tianjin People's Republic of China

Haihe Laboratory of Sustainable Chemical Transformations Tianjin People's Republic of China

Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin People's Republic of China

Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin People's Republic of China

LONGi Central R&D Institute LONGi Green Energy Technology Co. Ltd Xi'an People's Republic of China

Department of Applied Physics The Hong Kong Polytechnic University Hong Kong People's Republic of China

Ultrafast Electron Microscopy Laboratory The MOE Key Laboratory of Weak‐Light Nonlinear Photonics School of Physics Nankai University Tianjin People's Republic of China

Academy for Advanced Interdisciplinary Studies Nankai University Tianjin People's Republic of China

School of Chemical Engineering and Technology Xi'an Jiaotong University Xi'an People's Republic of China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Nankai University

References (47)

Show source-provided references
1. 10.1038/s41586‐025‐09333‐z10.1038/s41586‐025‐09333‐z ↗
2. 10.1038/s41586‐024‐07997‐710.1038/s41586‐024‐07997‐7 ↗
3. 10.1038/s41586‐023‐06667‐410.1038/s41586‐023‐06667‐4 ↗
4. 10.1126/science.adh384910.1126/science.adh3849 ↗
5. 10.1126/science.ado910410.1126/science.ado9104 ↗
6. 10.1126/science.adv455110.1126/science.adv4551 ↗
7. 10.1016/j.joule.2025.10217410.1016/j.joule.2025.102174 ↗
8. 10.1016/j.joule.2025.10214210.1016/j.joule.2025.102142 ↗
9. 10.1126/science.adg009110.1126/science.adg0091 ↗
10. 10.1039/D5EE00563A10.1039/D5EE00563A ↗
11. 10.1016/j.joule.2024.06.01510.1016/j.joule.2024.06.015 ↗
12. 10.1016/j.joule.2024.06.01810.1016/j.joule.2024.06.018 ↗
13. 10.1002/adma.20220788310.1002/adma.202207883 ↗
14. 10.1002/adma.20220619310.1002/adma.202206193 ↗
15. 10.1002/adma.20230869210.1002/adma.202308692 ↗
16. 10.1126/science.adx174510.1126/science.adx1745 ↗
17. 10.1002/adfm.20240440210.1002/adfm.202404402 ↗
18. 10.1021/acsenergylett.8b0200210.1021/acsenergylett.8b02002 ↗
19. 10.1038/s41578‐023‐00610‐910.1038/s41578‐023‐00610‐9 ↗
20. 10.1021/jacs.2c0344310.1021/jacs.2c03443 ↗
21. 10.1021/acsenergylett.3c0088110.1021/acsenergylett.3c00881 ↗
22. 10.1021/acs.chemmater.9b0499510.1021/acs.chemmater.9b04995 ↗
23. 10.1038/ncomms1175510.1038/ncomms11755 ↗
24. 10.1126/science.adt341710.1126/science.adt3417 ↗
25. 10.1126/science.aad584510.1126/science.aad5845 ↗
26. 10.1002/anie.20250239110.1002/anie.202502391 ↗
27. 10.1038/s41566‐025‐01618‐z10.1038/s41566‐025‐01618‐z ↗
28. 10.1038/s41560‐024‐01491‐010.1038/s41560‐024‐01491‐0 ↗
29. 10.1038/s41586‐024‐07226‐110.1038/s41586‐024‐07226‐1 ↗
30. 10.1126/science.aba343310.1126/science.aba3433 ↗
31. 10.1002/anie.20221393210.1002/anie.202213932 ↗
32. 10.1038/s41563‐022‐01390‐310.1038/s41563‐022‐01390‐3 ↗
33. 10.1021/jacs.9b1163710.1021/jacs.9b11637 ↗
34. 10.1039/C5NR00041F10.1039/C5NR00041F ↗
35. 10.1021/acs.jpcc.5b0643610.1021/acs.jpcc.5b06436 ↗
36. 10.1107/S002188989601192210.1107/S0021889896011922 ↗
37. 10.1039/C6EE01969B10.1039/C6EE01969B ↗
38. 10.1038/s41560‐017‐0054‐310.1038/s41560‐017‐0054‐3 ↗
39. 10.1021/jz402589q10.1021/jz402589q ↗
40. 10.1039/D4EE03801K10.1039/D4EE03801K ↗
41. 10.1002/adma.20180248610.1002/adma.201802486 ↗
42. 10.1063/5.018719710.1063/5.0187197 ↗
43. 10.1016/j.jechem.2021.08.00610.1016/j.jechem.2021.08.006 ↗
44. 10.1038/s41560‐019‐0529‐510.1038/s41560‐019‐0529‐5 ↗
45. 10.1038/s41560‐019‐0400‐810.1038/s41560‐019‐0400‐8 ↗
46. 10.1021/acsenergylett.3c0093010.1021/acsenergylett.3c00930 ↗
47. 10.1038/s41560‐020‐00687‐410.1038/s41560‐020‐00687‐4 ↗