DataVXACS Applied Materials & InterfacesPaper
journal article·2023-04-05

Stabilization of Component-Pure α-FAPbI3 via Volatile Additives for Stable Photovoltaics

Dianxi Wang, Muyang Chen, Xuecong Zhang, Lingfeng Chao, Tingting Niu, Yifan Lv, Guichuan Xing, Yingdong Xia, Mingjie Li, Hui Zhang, Yonghua Chen

ACS Applied Materials & Interfaces· Volume 15· Issue 13
Publisher page
Source abstract

Abstract

State-of-the-art high-performance perovskite solar cells are mainly based on formamidinium (FA)-dominated perovskites because of their narrow band gap and remarkable thermal resistance. However, photoactive α-FAPbI 3 is prone to transit to the photoinactive phase, and pioneering phase stabilization strategies can induce undesirable band gap broadening or phase segregation, seriously restricting the efficiency and long-term stability of the resultant photovoltaics. Herein, a small molecule of ammonium acetate (NH 4 Ac) was introduced as an additive in a modified ripening method to fabricate component-pure α-FAPbI 3 . Owing to the strong interaction between NH 4 Ac and PbI 2, FAI via Pb–O coordination, and N–H···N hydrogen bonding, vertically oriented perovskites with relaxed crystal strain were first generated, which were fully converted to α-FAPbI 3 in a further ripening process. The NH 4 Ac was fully volatized after the perovskite formation, resulting in component-pure α-FAPbI 3 with a band gap of 1.48 eV and remarkable stability under light illumination. Ultimately, a champion device efficiency of above 21% was obtained based on the component-pure α-FAPbI 3 and over 95% of the initial efficiency can be maintained after 1000 h of aging.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Solid-state spectroscopy and crystallography

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

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China

Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, P. R. China

Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa 999078, P. R. China

Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong, P. R. China

Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen 518057, Guangdong, P. R. China

Optics Valley Laboratory, Wuhan, Hubei 430074, P. R. China

Funding

Jiangsu Province Postdoctoral Science Foundation · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Jiangsu Province · Jiangsu Science and Technology Department · National Natural Science Foundation of China · Wuhan National Laboratory for Optoelectronics · Shaanxi Provincial Science and Technology Department · Northwestern Polytechnical University · Natural Science Foundation of Shaanxi Province · Innovation Project of Optics Valley Laboratory

References (48)

Show source-provided references
1. 10.1126/science.abb716710.1126/science.abb7167 ↗
2. 10.1002/adma.20130517210.1002/adma.201305172 ↗
3. 10.1016/j.joule.2019.06.01410.1016/j.joule.2019.06.014 ↗
4. 10.1038/s41586-021-03964-810.1038/s41586-021-03964-8 ↗
5. 10.1039/c3ee43822h10.1039/c3ee43822h ↗
6. 10.1039/C6CP00721J10.1039/C6CP00721J ↗
7. 10.1021/acs.inorgchem.6b0130710.1021/acs.inorgchem.6b01307 ↗
8. 10.1021/acs.chemmater.5b0410710.1021/acs.chemmater.5b04107 ↗
9. 10.1021/acsenergylett.0c0080110.1021/acsenergylett.0c00801 ↗
10. 10.1021/acs.jpclett.5b0038010.1021/acs.jpclett.5b00380 ↗
11. 10.1002/aenm.20150131010.1002/aenm.201501310 ↗
12. 10.1021/acs.jpclett.9b0376310.1021/acs.jpclett.9b03763 ↗
13. 10.1126/science.aah555710.1126/science.aah5557 ↗
14. 10.1021/acsenergylett.6b0045710.1021/acsenergylett.6b00457 ↗
15. 10.1002/adfm.20210856710.1002/adfm.202108567 ↗
16. 10.1038/s41586-021-03518-y10.1038/s41586-021-03518-y ↗
17. 10.1039/C5EE03874J10.1039/C5EE03874J ↗
18. 10.1021/acsenergylett.9b0234810.1021/acsenergylett.9b02348 ↗
19. 10.1002/anie.20211255510.1002/anie.202112555 ↗
20. 10.1021/acsenergylett.9b0245010.1021/acsenergylett.9b02450 ↗
21. 10.1002/anie.20191205110.1002/anie.201912051 ↗
22. 10.1021/acs.chemmater.5b0169110.1021/acs.chemmater.5b01691 ↗
23. 10.1002/adma.20160306210.1002/adma.201603062 ↗
24. 10.1021/acsenergylett.1c0181110.1021/acsenergylett.1c01811 ↗
25. 10.1038/s41586-021-03406-510.1038/s41586-021-03406-5 ↗
26. 10.1016/j.isci.2020.10135910.1016/j.isci.2020.101359 ↗
27. 10.1016/j.cej.2022.13646910.1016/j.cej.2022.136469 ↗
28. 10.1021/cm404006p10.1021/cm404006p ↗
29. 10.1016/j.actamat.2020.03.03610.1016/j.actamat.2020.03.036 ↗
30. 10.1021/acsami.0c1573310.1021/acsami.0c15733 ↗
31. 10.1002/adma.20217040910.1002/adma.202170409 ↗
32. 10.1002/adma.20210785010.1002/adma.202107850 ↗
33. 10.1002/adfm.20140400710.1002/adfm.201404007 ↗
34. 10.1021/acs.chemmater.5b0316910.1021/acs.chemmater.5b03169 ↗
35. 10.1021/acs.jpclett.1c0424110.1021/acs.jpclett.1c04241 ↗
36. 10.1126/science.abf765210.1126/science.abf7652 ↗
37. 10.1002/adfm.20190744210.1002/adfm.201907442 ↗
38. 10.34133/2020/261634510.34133/2020/2616345 ↗
39. 10.31635/ccschem.022.20210162910.31635/ccschem.022.202101629 ↗
40. 10.1021/acsami.1c2218410.1021/acsami.1c22184 ↗
41. 10.1002/aenm.20210069010.1002/aenm.202100690 ↗
42. 10.1002/anie.20200425610.1002/anie.202004256 ↗
43. 10.1002/aenm.20170013110.1002/aenm.201700131 ↗
44. 10.1002/adfm.20220119310.1002/adfm.202201193 ↗
45. 10.1126/science.abc441710.1126/science.abc4417 ↗
46. 10.1021/acsenergylett.1c0254510.1021/acsenergylett.1c02545 ↗
47. 10.1002/adfm.20201060310.1002/adfm.202010603 ↗
48. 10.1016/j.cej.2022.13767610.1016/j.cej.2022.137676 ↗