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Research Article

Degradation mechanism and stability improvement of formamidine-based perovskite solar cells under high humidity conditions

Fengren Cao§, Peng Zhang§, Haoxuan Sun, Meng Wang, Liang Li( )
School of Physical Science and Technology, Center for Energy Conversion Materials & Physics (CECMP), Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China

§ Fengren Cao and Peng Zhang contributed equally to this work.

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Graphical Abstract

Through X-ray diffraction and scanning electron microscopy characterization of different perovskite systems in a high humidity environment, the degradation process and corresponding mechanism of commonly used formamidine-based perovskite films under high humidity were presented. On this basis, a seed solution strategy in a two-step preparation process was adopted to enhance the performance and stability of formamidine-based perovskite solar cells.

Abstract

Formamidine (FA)-based perovskite solar cells (PSCs) are promising candidates for photoelectric conversion devices due to their excellent optoelectronic properties. However, the instability of perovskites, especially moisture instability, remains one of the biggest obstacles to the commercialization of perovskite devices. Therefore, it is very important to explore and target the effect of moisture on FA-based perovskites to prevent this effect and improve device stability. Herein, we studied the degradation process of commonly used FA-based perovskite films by X-ray diffraction and scanning electron microscopy characterization and analyzed the reasons for their humidity-induced degradation. Subsequently, we further adopted a strategy by adding methylammonium bromine powder into a PbI2 precursor solution to prepare a seed solution in a two-step preparation process to enhance the performance and stability of FA-based PSCs. Finally, the degradation rate of the obtained perovskite film was significantly slowed down under high humidity compared to that of perovskite films prepared by a two-step method without applying a seed solution. The corresponding device achieved a remarkable power conversion efficiency of 23.22%, and the efficiency of this device showed no attenuation after 900 h of exposure to air.

Keywords

formamidine-based perovskitemoisture degradationsolar cellseed solution

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References

1

Min, H.; Lee, D. Y.; Kim, J.; Kim, G.; Lee, K. S.; Kim, J.; Paik, M. J.; Kim, Y. K.; Kim, K. S.; Kim, M. G. et al. Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes. Nature 2021, 598, 444–450.
Crossref Google Scholar
2

Liu, Z. Y.; Liu, P. F.; Li, M.; He, T. W.; Liu, T. X.; Yu, L. M.; Yuan, M. J. Efficient and stable FA-rich perovskite photovoltaics: From material properties to device optimization. Adv. Energy Mater. 2022, 12, 2200111.
Crossref Google Scholar
3

Zhang, C.; Wang, H. X.; Li, H. Y.; Zhuang, Q. X.; Gong, C.; Hu, X. F.; Cai, W. S.; Zhao, S. Y.; Chen, J. Z.; Zang, Z. G. Simultaneous passivation of bulk and interface defects through synergistic effect of anion and cation toward efficient and stable planar perovskite solar cells. J. Energy Chem. 2021, 63, 452–460.
Crossref Google Scholar
4

Christians, J. A.; Herrera, P. A. M.; Kamat, P. V. Transformation of the excited state and photovoltaic efficiency of CH3NH3PbI3 perovskite upon controlled exposure to humidified air. J. Am. Chem. Soc. 2015, 137, 1530–1538.
Crossref Google Scholar
5

Han, Y.; Meyer, S.; Dkhissi, Y.; Weber, K.; Pringle, J. M.; Bach, U.; Spiccia, L.; Cheng, Y. B. Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity. J. Mater. Chem. A 2015, 3, 8139–8147.
Crossref Google Scholar
6

Holzhey, P.; Yadav, P.; Turren-Cruz, S. H.; Ummadisingu, A.; Grätzel, M.; Hagfeldt, A.; Saliba, M. A chain is as strong as its weakest link-stability study of MAPbI3 under light and temperature. Mater. Today 2019, 29, 10–19.
Crossref Google Scholar
7

Ouyang, Y. X.; Li, Y. J.; Zhu, P. C.; Li, Q.; Gao, Y.; Tong, J. Y.; Shi, L.; Zhou, Q. H.; Ling, C. Y.; Chen, Q. et al. Photo-oxidative degradation of methylammonium lead iodide perovskite: Mechanism and protection. J. Mater. Chem. A 2019, 7, 2275–2282.
Crossref Google Scholar
8

Troughton, J.; Hooper, K.; Watson, T. M. Humidity resistant fabrication of CH3NH3PbI3 perovskite solar cells and modules. Nano Energy 2017, 39, 60–68.
Crossref Google Scholar
9

Huang, J. B.; Tan, S. Q.; Lund, P. D.; Zhou, H. P. Impact of H2O on organic–inorganic hybrid perovskite solar cells. Energy Environ. Sci. 2017, 10, 2284–2311.
Crossref Google Scholar
10

Lee, J. W.; Bae, S. H.; Hsieh, Y. T.; De Marco, N.; Wang, M. K.; Sun, P. Y.; Yang, Y. A bifunctional Lewis base additive for microscopic homogeneity in perovskite solar cells. Chem 2017, 3, 290–302.
Crossref Google Scholar
11

Zhu, J.; Kim, D. H.; Kim, J. D.; Lee, D. G.; Kim, W. B.; Chen, S. W.; Kim, J. Y.; Lee, J. M.; Lee, H.; Han, G. S. et al. All-in-one Lewis base for enhanced precursor and device stability in highly efficient perovskite solar cells. ACS Energy Lett. 2021, 6, 3425–3434.
Crossref Google Scholar
12

Liu, Z. Z.; Cao, F. R.; Wang, M.; Wang, M.; Li, L. Observing defect passivation of the grain boundary with 2-aminoterephthalic acid for efficient and stable perovskite solar cells. Angew. Chem., Int. Ed. 2020, 59, 4161–4167.
Crossref Google Scholar
13

Xie, L.; Chen, J.; Vashishtha, P.; Zhao, X.; Shin, G. S.; Mhaisalkar, S. G.; Park, N. G. Importance of functional groups in cross-linking methoxysilane additives for high-efficiency and stable perovskite solar cells. ACS Energy Lett. 2019, 4, 2192–2200.
Crossref Google Scholar
14

Watson, B. L.; Rolston, N.; Bush, K. A.; Taleghani, L.; Dauskardt, R. H. Synthesis and use of a hyper-connecting cross-linking agent in the hole-transporting layer of perovskite solar cells. J. Mater. Chem. A 2017, 5, 19267–19279.
Crossref Google Scholar
15

Zhang, S. S.; Liu, Z. H.; Zhang, W. J.; Jiang, Z. Y.; Chen, W. T.; Chen, R.; Huang, Y. Q.; Yang, Z. C.; Zhang, Y. Q.; Han, L. Y. et al. Barrier designs in perovskite solar cells for long-term stability. Adv. Energy Mater. 2020, 10, 2001610.
Crossref Google Scholar
16

Song, D. D.; Wei, D.; Cui, P.; Li, M. C.; Duan, Z. Q.; Wang, T. Y.; Ji, J.; Li, Y. Y.; Mbengue, J. M.; Li, Y. F. et al. Dual function interfacial layer for highly efficient and stable lead halide perovskite solar cells. J. Mater. Chem. A 2016, 4, 6091–6097.
Crossref Google Scholar
17

Hu, Q.; Chen, W.; Yang, W. Q.; Li, Y.; Zhou, Y. C.; Larson, B. W.; Johnson, J. C.; Lu, Y. H.; Zhong, W. K.; Xu, J. Q. et al. Improving efficiency and stability of perovskite solar cells enabled by a near-infrared-absorbing moisture barrier. Joule 2020, 4, 1575–1593.
Crossref Google Scholar
18

Vasilopoulou, M.; Fakharuddin, A.; Coutsolelos, A. G.; Falaras, P.; Argitis, P.; Yusoff, A. R. B. M.; Nazeeruddin, M. K. Molecular materials as interfacial layers and additives in perovskite solar cells. Chem. Soc. Rev. 2020, 49, 4496–4526.
Crossref Google Scholar
19

Brinkmann, K. O.; Zhao, J.; Pourdavoud, N.; Becker, T.; Hu, T.; Olthof, S.; Meerholz, K.; Hoffmann, L.; Gahlmann, T.; Heiderhoff, R. et al. Suppressed decomposition of organometal halide perovskites by impermeable electron-extraction layers in inverted solar cells. Nat. Commun. 2017, 8, 13938.
Crossref Google Scholar
20

Shi, L.; Bucknall, M. P.; Young, T. L.; Zhang, M.; Hu, L.; Bing, J. M.; Lee, D. S.; Kim, J.; Wu, T.; Takamure, N. et al. Gas chromatography-mass spectrometry analyses of encapsulated stable perovskite solar cells. Science 2020, 368, eaba2412.
Crossref Google Scholar
21

Wang, S. S.; Zhang, Z. P.; Tang, Z. K.; Su, C. L.; Huang, W.; Li, Y.; Xing, G. C. Polymer strategies for high-efficiency and stable perovskite solar cells. Nano Energy 2021, 82, 105712.
Crossref Google Scholar
22

Cheacharoen, R.; Rolston, N.; Harwood, D.; Bush, K. A.; Dauskardt, R. H.; McGehee, M. D. Design and understanding of encapsulated perovskite solar cells to withstand temperature cycling. Energy Environ. Sci. 2018, 11, 144–150.
Crossref Google Scholar
23

Ma, S.; Yuan, G. Z.; Zhang, Y.; Yang, N.; Li, Y. J.; Chen, Q. Development of encapsulation strategies towards the commercialization of perovskite solar cells. Energy Environ. Sci. 2022, 15, 13–55.
Crossref Google Scholar
24

Lu, Q.; Yang, Z. C.; Meng, X.; Yue, Y. F.; Ahmad, M. A.; Zhang, W. J.; Zhang, S. S.; Zhang, Y. Q.; Liu, Z. H.; Chen, W. A review on encapsulation technology from organic light emitting diodes to organic and perovskite solar cells. Adv. Funct. Mater. 2021, 31, 2100151.
Crossref Google Scholar
25

Kundu, S.; Kelly, T. L. In situ studies of the degradation mechanisms of perovskite solar cells. EcoMat 2020, 2, e12025.
Crossref Google Scholar
26

Yun, J. S.; Kim, J.; Young, T.; Patterson, R. J.; Kim, D.; Seidel, J.; Lim, S.; Green, M. A.; Huang, S. J.; Ho-Baillie, A. Humidity-induced degradation via grain boundaries of HC(NH2)2PbI3 planar perovskite solar cells. Adv. Funct. Mater. 2018, 28, 1705363.
Crossref Google Scholar
27

Zhao, Y. C.; Tan, H. R.; Yuan, H. F.; Yang, Z. Y.; Fan, J. Z.; Kim, J.; Voznyy, O.; Gong, X. W.; Quan, L. N.; Tan, C. S. et al. Perovskite seeding growth of formamidinium-lead-iodide-based perovskites for efficient and stable solar cells. Nat. Commun. 2018, 9, 1607.
Crossref Google Scholar
28

Jeong, J.; Kim, H. B.; Yoon, Y. J.; An, N. G.; Song, S.; Kim, J. W.; Kim, M.; Jang, H.; Kim, D. S.; Kim, G. H. et al. The introduction of a perovskite seed layer for high performance perovskite solar cells. J. Mater. Chem. A 2018, 6, 20138–20144.
Crossref Google Scholar
29

Lin, C. Y.; Li, S. S.; Chang, J. W.; Chia, H. C.; Hsiao, Y. Y.; Su, C. J.; Lian, B. J.; Wen, C. Y.; Huang, S. K.; Wu, W. R. et al. Unveiling the nanoparticle-seeded catalytic nucleation kinetics of perovskite solar cells by time-resolved GIXS. Adv. Funct. Mater. 2019, 29, 1902582.
Crossref Google Scholar
30

Yi, X. H.; Zhang, Z. M.; Chang, A. L.; Mao, Y. C.; Luan, Y. G.; Lin, T.; Wei, Y. Z.; Zhang, Y. Y.; Wang, F. Y.; Cao, S. K. et al. Incorporating CsF into the PbI2 film for stable mixed cation-halide perovskite solar cells. Adv. Energy Mater. 2019, 9, 1901726.
Crossref Google Scholar
31

Euvrard, J.; Gunawan, O.; Mitzi, D. B. Impact of PbI2 passivation and grain size engineering in CH3NH3PbI3 solar absorbers as revealed by carrier-resolved photo-hall technique. Adv. Energy Mater. 2019, 9, 1902706.
Crossref Google Scholar
32

Jiang, Y. Y.; He, X. Y.; Liu, T. F.; Zhao, N.; Qin, M. C.; Liu, J. X.; Jiang, F. Y.; Qin, F.; Sun, L.; Lu, X. H. et al. Intralayer a-site compositional engineering of ruddlesden-popper perovskites for thermostable and efficient solar cells. ACS Energy Lett. 2019, 4, 1216–1224.
Crossref Google Scholar
33

Yuan, S. H.; Qian, F.; Yang, S. M.; Cai, Y.; Wang, Q.; Sun, J.; Liu, Z. K.; Liu, S. Z. NbF5: A novel α-phase stabilizer for FA-based perovskite solar cells with high efficiency. Adv. Funct. Mater. 2019, 29, 1807850.
Crossref Google Scholar
34

Zhang, Y.; Zhou, Z. M.; Ji, F. X.; Li, Z. P.; Cui, G. L.; Gao, P.; Oveisi, E.; Nazeeruddin, M. K.; Pang, S. P. Trash into treasure: δ-FAPbI3 polymorph stabilized MAPbI3 perovskite with power conversion efficiency beyond 21%. Adv. Mater. 2018, 30, 1707143.
Crossref Google Scholar
35

Liu, Y. H.; Akin, S.; Hinderhofer, A.; Eickemeyer, F. T.; Zhu, H. W.; Seo, J. Y.; Zhang, J. H.; Schreiber, F.; Zhang, H.; Zakeeruddin, S. M. et al. Stabilization of highly efficient and stable phase-pure FAPbI3 perovskite solar cells by molecularly tailored 2D-overlayers. Angew. Chem., Int. Ed. 2020, 59, 15688–15694.
Crossref Google Scholar
36

Marchezi, P. E.; Therézio, E. M.; Szostak, R.; Loureiro, H. C.; Bruening, K.; Gold-Parker, A.; Melo Jr, M. A.; Tassone, C. J.; Tolentino, H. C. N.; Toney, M. F. et al. Degradation mechanisms in mixed-cation and mixed-halide CsxFA1-xPb(BryI1-y)3 perovskite films under ambient conditions. J. Mater. Chem. A 2020, 8, 9302–9312.
Crossref Google Scholar
37

Gratia, P.; Zimmermann, I.; Schouwink, P.; Yum, J. H.; Audinot, J. N.; Sivula, K.; Wirtz, T.; Nazeeruddin, M. K. The many faces of mixed ion perovskites: Unraveling and understanding the crystallization process. ACS Energy Lett. 2017, 2, 2686–2693.
Crossref Google Scholar
38

Ye, F. H.; Ma, J. J.; Chen, C.; Wang, H. B.; Xu, Y. H.; Zhang, S. P.; Wang, T.; Tao, C.; Fang, G. J. Roles of MACl in sequentially deposited bromine-free perovskite absorbers for efficient solar cells. Adv. Mater. 2021, 33, 2007126.
Crossref Google Scholar
39

Kim, M.; Kim, G. H.; Lee, T. K.; Choi, I. W.; Choi, H. W.; Jo, Y.; Yoon, Y. J.; Kim, J. W.; Lee, J.; Huh, D. et al. Methylammonium chloride induces intermediate phase stabilization for efficient perovskite solar cells. Joule 2019, 3, 2179–2192.
Crossref Google Scholar
40

Li, C.; Guo, Q.; Zhang, H. J.; Bai, Y. M.; Wang, F. Z.; Liu, L.; Hayat, T.; Alsaedi, A.; Tan, Z. A. Enhancing the crystallinity of HC(NH2)2PbI3 film by incorporating methylammonium halide intermediate for efficient and stable perovskite solar cells. Nano Energy 2017, 40, 248–257.
Crossref Google Scholar
41

Xie, F. X.; Chen, C. C.; Wu, Y. Z.; Li, X.; Cai, M. L.; Liu, X.; Yang, X. D.; Han, L. Y. Vertical recrystallization for highly efficient and stable formamidinium-based inverted-structure perovskite solar cells. Energy Environ. Sci. 2017, 10, 1942–1949.
Crossref Google Scholar
Nano Research
Volume 15 Issue 10,
October 2022
Pages 8955-8961
DOI: 10.1007/s12274-022-4524-y
Cite this article:
Cao F, Zhang P, Sun H, et al. Degradation mechanism and stability improvement of formamidine-based perovskite solar cells under high humidity conditions. Nano Research, 2022, 15(10): 8955-8961. https://doi.org/10.1007/s12274-022-4524-y
Topics:
Perovskite solar cells

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Received: 12 April 2022
Revised: 30 April 2022
Accepted: 09 May 2022
Published: 10 June 2022
© Tsinghua University Press 2022
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