PREPARATION OF HIGH-EFFICIENCY WIDE-BANDGAP PEROVSKITE PHOTOVOLTAIC CELLS BY INHIBITING PHASE SEPARATION WITH BAC MODIFICATION LAYER

Li Zhuoxin; Feng Xuzheng; Liu Xuewu; Zheng Liming; Li Xingxi; Cai Molang

doi:10.19912/j.0254-0096.tynxb.2025-1131

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (12) : 173-179. DOI: 10.19912/j.0254-0096.tynxb.2025-1131

PREPARATION OF HIGH-EFFICIENCY WIDE-BANDGAP PEROVSKITE PHOTOVOLTAIC CELLS BY INHIBITING PHASE SEPARATION WITH BAC MODIFICATION LAYER

Li Zhuoxin¹, Feng Xuzheng², Liu Xuewu¹, Zheng Liming¹, Li Xingxi³, Cai Molang²

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Abstract

Benzalkonium chloride is employed as a surface modifier to suppress photoinduced phase separation of the mixed-halide wide-bandgap perovskite materials. The long-chain alkyl groups of BAC can form a dense hydrophobic barrier on the surface of the perovskite film, blocking the penetration of environmental moisture to inhibit moisture-induced halide ion migration, thereby effectively enhancing the phase stability of perovskite and suppressing the occurrence of phase segregation. Device characterization results reveal that the BAC-modified wide-bandgap perovskite solar cells exhibite notable performance improvements, achieving a maximum VOC of 1.22 V and a PCE of up to 21.24%. Furthermore, after continuous illumination for 500 hours in an ambient atmosphere with a relative humidity of 50%, the perovskite photovoltaic cell retains 83% of its initial efficiency, demonstrating favorable moisture resistance and operational reliability.

Key words

perovskite photovoltaic cells / wide-bandgap / efficiency / stability / phase segregation

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Li Zhuoxin, Feng Xuzheng, Liu Xuewu, Zheng Liming, Li Xingxi, Cai Molang. PREPARATION OF HIGH-EFFICIENCY WIDE-BANDGAP PEROVSKITE PHOTOVOLTAIC CELLS BY INHIBITING PHASE SEPARATION WITH BAC MODIFICATION LAYER[J]. Acta Energiae Solaris Sinica. 2026, 47(12): 173-179 https://doi.org/10.19912/j.0254-0096.tynxb.2025-1131

References

[1] Shockley W, Queisser H J.Detailed balance limit of efficiency of p-n junction solar cells[J]. Journal of Applied Physics, 1961, 32(3): 510-519.
[2] Guillemoles J F, Kirchartz T, Cahen D, et al.Guide for the perplexed to the Shockley-Queisser model for solar cells[J]. Nature Photonics, 2019, 13(8): 501-505.
[3] Liu X Z, Rienäcker M, Gholipoor M, et al.Charge carrier management for highly efficient perovskite/Si tandem solar cells with poly-Si based passivating contacts[J]. Energy & Environmental Science, 2025, 18(11): 5599-5609.
[4] Xiao K, Lin Y H, Zhang M, et al.Scalable processing for realizing 21.7%-efficient all-perovskite tandem solar modules[J]. Science, 2022, 376(6594): 762-767.
[5] Al-Ashouri A, Köhnen E, Li B, et al.Monolithic perovskite/silicon tandem solar cell with >29% efficiency by enhanced hole extraction[J]. Science, 2020, 370(6522): 1300-1309.
[6] Mei J J, Yan F.Recent advances in wide-bandgap perovskite solar cells[J]. Advanced Materials, 2025, 37(48): 2418622.
[7] Hoke E T, Slotcavage D J, Dohner E R, et al.Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics[J]. Chemical Science, 2015, 6(1): 613-617.
[8] Azpiroz J M, Mosconi E, Bisquert J, et al. Defect migration in methylammonium lead iodide and its role in perovskite solar cell operation[J]. Energy & Environmental Science, 2015, 8(7)2118-2127
[9] Lin C D, Li S Y, Zhang W S, et al.Effect of bromine substitution on the ion migration and optical absorption in MAPbI3 perovskite solar cells: the first-principles study[J]. ACS Applied Energy Materials, 2018, 1(3): 1374-1380.
[10] Baranowski J J, Sahare S, Solovan M, et al.Insights into the local heating effects in triple-cation mixed-halide perovskite cells: charge dynamics, coherent phonons, anion segregation[J]. Small, 2025, 21(8): 2408541.
[11] Zhou W C, Chen X Q, Zhou R K, et al.The role of grain boundaries on ion migration and charge recombination in halide perovskites[J]. Small, 2024, 20(32): 2310368.
[12] 戴峣, 王鹏阳, 赵颖, 等. 1, 1'-磺酰基双(2-甲基-1H-咪唑)对宽带隙钙钛矿太阳电池性能的影响[J]. 太阳能学报, 2024, 45(4): 43-50.
Dai Y, Wang P Y, Zhao Y, et al.Influence of 1, 1'-sulfonyl bis(2-methyl-1H-imidazole)on performance of wide-band gap perovskite solar cells[J]. Acta Energiae Solaris Sinica, 2024, 45(4): 43-50.
[13] 白建明, 于越, 李治学, 等. 高效柔性钙钛矿太阳电池研究[J]. 太阳能学报, 2024, 45(4): 116-121.
Bai J M, Yu Y, Li Z X, et al.Research on efficient and flexible perovskite solar cells[J]. Acta Energiae Solaris Sinica, 2024, 45(4): 116-121.
[14] Ali Akhavan Kazemi M, Folastre N, Raval P, et al. Moisture-induced non-equilibrium phase segregation in triple cation mixed halide perovskite monitored by in situ characterization techniques and solid-state NMR[J]. Energy & Environmental Materials, 2023, 6(2): e12335.
[15] Gan Z X, Yu Z Z, Meng M, et al.Hydration of mixed halide perovskites investigated by Fourier transform infrared spectroscopy[J]. APL Materials, 2019, 7(3): 031107.
[16] Mejaouri S, Cacovich S, Baranek P, et al.Humidity-induced degradation processes of halide perovskites unveiled by correlative analytical electron microscopy[J]. Small Methods, 2024, 8(1): e2300901.
[17] 李卓芯, 冯旭铮, 陈香港, 等. 添加剂提高宽带隙钙钛矿太阳电池的性能[J]. 太阳能学报, 2024, 45(4): 30-35.
Li Z X, Feng X Z, Chen X G, et al.Additive improves performance of wide bandgap perovskite solar cells[J]. Acta Energiae Solaris Sinica, 2024, 45(4): 30-35.
[18] 李卓芯. 高性能混合卤素钙钛矿太阳电池及其应用[D]. 北京: 华北电力大学, 2024.
Li Z X.Research on high performance mixed-halide perovskite solar cell and its application[D]. Beijing: North China Electric Power University, 2024.
[19] Isikgor F H, Zhumagali S, Merino L V T, et al. Molecular engineering of contact interfaces for high-performance perovskite solar cells[J]. Nature Reviews Materials, 2023, 8(2): 89-108.
[20] Yang Z, Dou J J, Kou S, et al.Multifunctional phosphorus-containing lewis acid and base passivation enabling efficient and moisture-stable perovskite solar cells[J]. Advanced Functional Materials, 2020, 30(15): 1910710.
[21] Li Z X, Li X, Chen X G, et al.In situ epitaxial growth of blocking structure in mixed-halide wide-band-gap perovskites for efficient photovoltaics[J]. Joule, 2023, 7(6): 1363-1381.
[22] Aihemaiti N, Peng S Y.Rationalizing light-induced phase segregation reversal by halide oxidation and diffusion in mixed halide perovskites[J]. ACS Energy Letters, 2025, 10(2): 907-914.
[23] Feng X Z, Li X, Li Z X, et al.Dual field passivation strategy for high-performance wide-bandgap perovskite solar cells[J]. ACS Applied Materials & Interfaces, 2025, 17(17): 25883-25893.
[24] Yang Y, Chang Q, Su J, et al.Activating halogen circulation enables efficient and stable wide-bandgap mixed-halide perovskite solar cells[J]. Advanced Materials, 2025, 37(11): 2416513.
[25] Li Z X, Li X, Feng X Z, et al.Strain control of mixed-halide wide-bandgap perovskites for highly efficient and stable solar cells[J]. Solar RRL, 2023, 7(22): 2370223.