Application of Single-molecule Liquid Crystal Additives in CH(NH2)2PbI3 Perovskite Solar Cells

doi:10.15541/jim20220777

Abstract

Abstract:

Solution-processed perovskite films usually contain a large quantity of grain boundaries, which decrease the film crystalline quality and introduce severe defect recombination, hindering performance of the devices based on them. Therefore, preparation of high-quality films to achieve high power conversion efficiencies remains a great challenge for perovskite solar cells. Due to high abilities of self-assembly and morphology-tuning for liquid crystal molecules, a single-molecule liquid crystal 4-cyano-4′-pentyl biphenyl (5CB) was employed as additive in CH(NH₂)₂PbI₃ (FAPbI₃) precursor solution to increase the perovskite grain size and decrease the grain boundaries. In addition, the cyano group in 5CB passivates the uncoordinated Pb²⁺ in the perovskite films, which reduces the trap density concentration and inhibits the nonradiative recombination. The resulting perovskite solar cells with 0.2 mg/mL 5CB in the precursor achieve an efficient power conversion efficiency of 21.27% with an open circuit voltage of 1.086 V, a current density of 24.17 mA/cm², and a fill factor of 80.96%. In conclusion, introducing single-molecule liquid crystal as additive is a facile and efficient strategy for improving the performance of FAPbI₃ solar cells.

Key words: perovskite solar cell, FAPbI₃, liquid crystal, 4-cyano-4′-n-pentyl-biphenly, defect passivation

CLC Number:

TQ174

HAN Xu, YAO Hengda, LYU Mei, LU Hongbo, ZHU Jun. Application of Single-molecule Liquid Crystal Additives in CH(NH₂)₂PbI₃ Perovskite Solar Cells[J]. Journal of Inorganic Materials, 2023, 38(9): 1097-1102.

Figures/Tables 8

Fig. 1 Molecular structure of single-molecule liquid crystal additive 5CB

Fig. 2 XRD patterns for FAPbI3 films of 5CB-x Inset is the intensity ratio of (001) peak to (011) peak

Fig. 3 SEM and AFM images for FAPbI3 films of Control and 5CB-x

Fig. 4 (a) Pb4f, (b) I3d and (c) N1s XPS spectra for FAPbI3 films of 5CB-0.2 and Control Colorful figures are available on website

Fig. 5 (a) UV-Vis absorption spectra, (b) PL spectra for FAPbI3 films of Control and 5CB-x Colorful figures are available on website

Fig. 6 J-V curves for FAPbI3 solar cells of Control and 5CB-x Colorful figures are available on website

Table 1 Photovoltaic parameters of FAPbI3 solar cells with different concentrations of 5CB in the precursor

Sample	V_OC/V	J_SC/(mA·cm^-2)	FF /%	PCE/%
Control	1.056	23.73	80.07	20.08
5CB-0.1	1.065	23.64	80.61	20.29
5CB-0.2	1.086	24.17	80.96	21.27
5CB-0.3	1.069	24.09	80.69	20.83

Fig. 7 (a) Dark J-V curves of hole-only devices, and (b) Nyquist plots for FAPbI3 solar cells of Control and 5CB-x Colorful figures are available on website

References 29

[1]	LUO X, LIN X, GAO F, et al. Recent progress in perovskite solar cells: from device to commercialization. Sci. China Chem., 2022, 65(12): 2369. DOI
[2]	RONG Y, HU Y, MEI A, et al. Challenges for commercializing perovskite solar cells. Science, 2018, 361(6408): eaat8235. DOI URL
[3]	DONG Y, ZOU Y, SONG J, et al. Recent progress of metal halide perovskite photodetectors. J. Mater. Chem. C, 2017, 5(44): 11369. DOI URL
[4]	KOJIMA A, TESHIMA K, SHIRAI Y, et al. Organometal halide perovskites as visible-light sensitizers for photovoltaic cells. J. Am. Chem. Soc., 2009, 131(17): 6050. DOI PMID
[5]	KIN M, JEONG J, LU H Z, et al. Conformal quantum dot-SnO₂ layers as electron transporters for efficient perovskite solar cells. Science, 2022, 375(6578): 302. DOI URL
[6]	NREL. Best Research-cell Efficiencies[2022-12-10]. https://www.nrel.gov/pv/assets/pdfs/best-research-cell-efficiencies-rev220630.pdf.
[7]	HU Y, GAO L, SU H, et al. Amino acid-based low-dimensional management for enhanced perovskite solar cells, Sol. RRL, 2022, 6(7): 2200168. DOI URL
[8]	LUO D, SU R, ZHANG W, et al. Minimizing non-radiative recombination losses in perovskite solar cells, Nat. Rev. Mater., 2020, 5(1): 44. DOI
[9]	YANG L, FENG L, LIU Z, et al. Record-efficiency flexible perovskite solar cells enabled by multifunctional organic ions interface passivation. Adv. Mater., 2022, 34(24): 220168.
[10]	ZHU J, QIAN Y, LI Z, et al. Defect healing in FAPb(I_1-_xBr_x)₃ perovskites: multifunctional fluorinated sulfonate surfactant anchoring enables >21% modules with improved operation stability. Adv. Energy Mater., 2022, 12(20): 2200632. DOI URL
[11]	LI X, WU X, LI B, et al. Modulating the deep-level defects and charge extraction for efficient perovskite solar cells with high fill factor over 86%. Energy Environ. Sci., 2022, 15(11): 4813. DOI URL
[12]	CHEN C, WANG X, LI Z, et al. Polyacrylonitrile-coordinated perovskite solar cell with open-circuit voltage exceeding 1.23 V. Angew. Chem. Int. Ed., 2021, 61(8): e202113932.
[13]	DENG X, XIE L, WANG S, et al. Ionic liquids engineering for high-efficiency and stable perovskite solar cells. Chem. Eng. J., 2020, 398: 125594. DOI URL
[14]	WANG S, WANG A, DENG X, et al. Lewis acid/base approach for efficacious defect passivation in perovskite solar cells. J. Mater. Chem. A, 2020, 8(25): 12201. DOI URL
[15]	CHEN J, PARK N. Materials and methods for interface engineering toward stable and efficient perovskite solar cells. ACS. Energy Lett., 2020, 5(8): 2742. DOI URL
[16]	KATO T, MIZOSHITA N, KISHIMOTO K. Functional liquid- crystalline assemblies: self-organized soft materials. Angew. Chem. Int. Ed., 2006, 45(1): 38. DOI URL
[17]	ARIVUNITHI V, REDDY S, SREE V, et al. Efficiency exceeding 20% in perovskite solar cells with side-chain liquid crystalline polymer-doped perovskite absorbers. Adv. Energy Mater., 2018, 8(30): 1801637. DOI URL
[18]	ARIVUNITHI V, PARK H, REDDY S, et al. A simple engineering strategy with side chain liquid crystal polymers in perovskite absorbers for high efficiency and stability. Org. Electron., 2021, 88: 105987. DOI URL
[19]	XIA X, PENG J, WAN Q, et al. Functionalized ionic liquid-crystal additive for perovskite solar cells with high efficiency and excellent moisture stability. ACS Appl. Mater. Interf., 2021, 13(15): 17677. DOI URL
[20]	HUANG Y, LEI X, HE T, et al. Recent progress on formamidinium- dominated perovskite photovoltaics. Adv. Energy Mater., 2021, 12(4): 21006.
[21]	CORREA-BAENA J, SALIBA M, BUONASSISI T, et al. Promises and challenges of perovskite solar cells. Science, 2017, 358(6364): 739. DOI URL
[22]	TAO L, WAGN Z, DUAN K, et al. Liquid crystal molecule as “binding agent” enables superior stable perovskite solar cells with high fill factor. Sol. RRL, 2019, 3(8): 1900125. DOI URL
[23]	DU X, ZHANG L, CHEN R, et al. Spontaneous interface healing by a dynamic liquid-crystal transition for high-performance perovskite solar cells. Adv. Mater., 2022, 34(49): 22073632.
[24]	CHEN L, CHEN J, WANG C, et al. High-light-tolerance PbI₂ boosting the stability and efficiency of perovskite solar cells. ACS Appl. Mater. Interf., 2021, 13(21): 24692. DOI URL
[25]	LI Y, CUI K, XU X, et al. Understanding the essential role of PbI₂ films in a high-performance lead halide perovskite photodetector. J. Phys. Chem. C, 2020, 124(28): 15107. DOI URL
[26]	WU Y, WANG Q, CHEN Y, et al. Stable perovskite solar cells with 25.17% efficiency enabled by improving crystallization and passivating defect synergistically. Energy Environ. Sci., 2022, 15(11): 4700. DOI URL
[27]	DUIJINSTEE E, BALL J, CONE V, et al. Toward understanding space-charge limited current measurements on metal halide perovskites, ACS Energy Lett., 2020, 5(2): 376. DOI URL
[28]	BUBE R. Trap density determination by space-charge-limited currents. J. Chem. Phys., 1962, 33(5): 1733. DOI URL
[29]	MAO P, ZHOU Q, JIN Z, et al. Efficiency-enhanced planar perovskite solar cells via an isopropanol/ethanol mixed solvent process. ACS Appl. Mater. Interf., 2016, 8(36): 23837. DOI URL

Application of Single-molecule Liquid Crystal Additives in CH(NH₂)₂PbI₃ Perovskite Solar Cells

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