journal article·2024-10Open access

Bottom Contact Engineering for Ambient Fabrication of >25% Durable Perovskite Solar Cells

Ligang Yuan, Shibing Zou, Kaicheng Zhang, Peng Huang, Yuyan Dong, Jiarong Wang, Kezhou Fan, Man Yu Lam, Xiao Wu, Wei Cheng, Ruijia Tang, Wenhao Chen, Weiqing Liu, Kam Sing Wong, Keyou Yan

Advanced Materials· Volume 36· Issue 41

Abstract

Abstract The bottom contact in perovskite solar cells (PSCs) is easy to cause deep trap states and severe instability issues, especially under maximum power point tracking (MPPT). In this study, sodium gluconate (SG) is employed to disperse tin oxide (SnO2) nanoparticles (NPs) and regulate the interface contact at the buried interface. The SG‐SnO2 electron transfer layer (ETL) enabled the deposition of pinhole‐free perovskite films in ambient air and improved interface contact by bridging effect. SG‐SnO2 PSCs achieved an impressive power conversion efficiency (PCE) of 25.34% (certified as 25.17%) with a high open‐circuit voltage (VOC) exceeding 1.19 V. The VOC loss is less than 0.34 V relative to the 1.53 eV bandgap, and the fill factor (FF) loss is only 2.02% due to the improved contact. The SG‐SnO2 PSCs retained around 90% of their initial PCEs after 1000 h operation (T90 = 1000 h), higher than T80 = 1000 h for the control SnO2 PSC. Microstructure analysis revealed that light‐induced degradation primarily occurred at the buried holes and grain boundaries and highlighted the importance of bottom‐contact engineering.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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

Affiliations

Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province Key Laboratory of Nondestructive Testing Ministry of Education School of the Testing and Photoelectric Engineering Nanchang Hangkong University Nanchang 330063 China

School of Environment and Energy State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling South China University of Technology Guangzhou 510000 China

Institute of Materials for Electronics and Energy Technology (i‐MEET) Friedrich‐Alexander‐University Erlangen‐Nüremberg Martensstraße 7 91058 Erlangen Germany

Research Institute of Frontier Science Southwest Jiaotong University Chengdu 610031 China

Department of Physics and William Mong Institute of Nano Science and Technology The Hong Kong University of Science and Technology Clearwater Bay Hong Kong 999077 P. R. China

Department of Physics The Chinese University of Hong Kong Shatin Hong Kong 999077 P. R. China

College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China

References (48)

Show source-provided references
1. 10.1002/pip.375010.1002/pip.3750 ↗
2. NREL Best Research‐cell Efficiency Chart https://www.nrel.gov/pv/cell‐efficiency.html(accessed: Feburary 2024).
3. 10.1002/idm2.1202210.1002/idm2.12022 ↗
4. 10.1039/C8TA11841H10.1039/C8TA11841H ↗
5. 10.1126/science.abh188510.1126/science.abh1885 ↗
6. 10.1002/aenm.20200061510.1002/aenm.202000615 ↗
7. 10.1126/science.abf560210.1126/science.abf5602 ↗
8. 10.1002/adma.20221154510.1002/adma.202211545 ↗
9. 10.1038/s41586-021-03964-810.1038/s41586-021-03964-8 ↗
10. 10.1002/adfm.20201038510.1002/adfm.202010385 ↗
11. 10.1002/aenm.20210315110.1002/aenm.202103151 ↗
12. 10.1002/aenm.20190214210.1002/aenm.201902142 ↗
13. 10.1002/aenm.20190308310.1002/aenm.201903083 ↗
14. 10.1002/aenm.20180013810.1002/aenm.201800138 ↗
15. 10.1021/acsami.1c0006610.1021/acsami.1c00066 ↗
16. 10.1021/acsami.2c1449410.1021/acsami.2c14494 ↗
17. 10.1002/anie.20230250710.1002/anie.202302507 ↗
18. 10.1002/adma.20180515310.1002/adma.201805153 ↗
19. 10.1002/adma.20200399010.1002/adma.202003990 ↗
20. 10.1016/j.cej.2021.13374410.1016/j.cej.2021.133744 ↗
21. 10.1016/j.surfin.2021.10158410.1016/j.surfin.2021.101584 ↗
22. 10.1021/acsnano.2c1109110.1021/acsnano.2c11091 ↗
23. 10.1002/adfm.20230345510.1002/adfm.202303455 ↗
24. 10.1126/science.abl567610.1126/science.abl5676 ↗
25. 10.1021/acsenergylett.2c0160510.1021/acsenergylett.2c01605 ↗
26. 10.1039/D1TA01730F10.1039/D1TA01730F ↗
27. 10.1002/adma.20200840510.1002/adma.202008405 ↗
28. 10.1002/adfm.20150521510.1002/adfm.201505215 ↗
29. 10.1002/adma.20170385210.1002/adma.201703852 ↗
30. 10.1002/adfm.20221190010.1002/adfm.202211900 ↗
31. 10.1126/science.aaa576010.1126/science.aaa5760 ↗
32. 10.1126/science.aaa272510.1126/science.aaa2725 ↗
33. 10.1039/D0TA10871E10.1039/D0TA10871E ↗
34. 10.1002/smtd.20220146710.1002/smtd.202201467 ↗
35. 10.1016/j.cej.2022.13696810.1016/j.cej.2022.136968 ↗
36. 10.1002/adma.20190369110.1002/adma.201903691 ↗
37. 10.1002/adma.20180054410.1002/adma.201800544 ↗
38. 10.1063/1.479469810.1063/1.4794698 ↗
39. 10.1002/pip.114710.1002/pip.1147 ↗
40. 10.1002/aenm.20160235810.1002/aenm.201602358 ↗
41. 10.1103/PhysRevApplied.4.01402010.1103/PhysRevApplied.4.014020 ↗
42. 10.1109/JPHOTOV.2012.219843410.1109/JPHOTOV.2012.2198434 ↗
43. 10.1002/adma.20190254310.1002/adma.201902543 ↗
44. 10.1021/acsami.7b1164810.1021/acsami.7b11648 ↗
45. 10.1063/1.490151010.1063/1.4901510 ↗
46. 10.1063/1.486463810.1063/1.4864638 ↗
47. 10.1016/j.nantod.2021.10116410.1016/j.nantod.2021.101164 ↗
48. 10.1038/s41467-019-13909-510.1038/s41467-019-13909-5 ↗