Effects of solvent additives on the morphology and transport property of a perylene diimide dimer film in perovskite solar cells for improved performance

Ye, Tengling; Jin, Shan; Singh, Ranbir; Kumar, Manish; Chen, Wenbo; Wang, Daizhe; Zhang, Xiaoru; Li, Wenxu; He, Dongqing

doi:10.1016/j.solener.2020.03.062

Cited by 18 publications

(8 citation statements)

References 40 publications

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“…When 10 wt% Bphen is added into the PNPDIN, 21.28% PCE is achieved, which is one of the best performances of PerSCs based on PDI CILs (Figure 1). [ 18,23‐37 ] More importantly, the high conductivity and good film morphology of PNPDIN also made the mixed CIL good thickness tolerance. The optimal PCE of the inverted PerSC still showed 20.46% for film thicknesses of up to 37 nm.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Wang

et al. 2023

Chin. J. Chem.

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Inverted perovskite solar cells (PerSCs) are a highly promising candidate in the photovoltaic field due to their low‐temperature fabrication process, negligible hysteresis, and easy integration with Si‐based solar cells. A cathode interlayer (CIL) is necessary in the development of inverted devices to reduce the trap density and energy barrier between the electron transport layer (ETL) and the electrode. However, most CILs are highly thickness‐sensitive due to low conductivity and poor film‐forming. In this study, we report on a self‐doping perylene imide‐based ionene polymer (PNPDIN) used as CIL material to modify electrode in inverted PerSCs. PNPDIN exhibits high conductivity and a good solubility in polar solvent, which results in an improved power conversion efficiency (PCE) from 10.05% (device without a CIL) to 16.97%. When the blend of PNPDIN and Bphen was used as a mixed CIL, the PCE of PerSCs can be further increased to 21.28% own to the excellent morphology and matched energy level. More importantly, the PCE of the device is highly tolerant to the thickness of the mixed CIL, which benefited from the high conductivity of PNPDIN. This development is expected to provide an excellent mixed CIL material for roll‐to‐roll processing efficient and stable inverted PerSCs.This article is protected by copyright. All rights reserved.

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Section: Background and Originality Contentmentioning

confidence: 99%

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Wang

et al. 2023

Chin. J. Chem.

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“…Organic–inorganic perovskites have appeared as promising semiconducting materials in prospective photovoltaic technologies with low-cost and unique properties. , The power conversion efficiency (PCE) of three-dimensional (3D) perovskite solar cells (PSCs) has swiftly improved from 3.8 to 25.7% in the early few years, which is close to that of silicon-based solar cells. To further improve the efficiency of PSCs, several research approaches including composition engineering, − perovskite surface passivation, − crystal growth manipulation, , interface engineering, , and band alignment are extensively investigated. However, poor device stability under humid, bright, and hot environment conditions is a major obstacle for practical implementation. − …”

Section: Introductionmentioning

confidence: 99%

Surface Passivation by Sulfur-Based 2D (TEA)₂PbI₄ for Stable and Efficient Perovskite Solar Cells

et al. 2023

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Perovskite solar cells (PSCs) with superior performance have been recognized as a potential candidate in photovoltaic technologies. However, defects in the active perovskite layer induce nonradiative recombination which restricts the performance and stability of PSCs. The construction of a thiophene-based 2D structure is one of the significant approaches for surface passivation of hybrid PSCs that may combine the benefits of the stability of 2D perovskite with the high performance of three-dimensional (3D) perovskite. Here, a sulfur-rich spacer cation 2-thiopheneethylamine iodide (TEAI) is synthesized as a passivation agent for the construction of a three-dimensional/two-dimensional (3D/2D) perovskite bilayer structure. TEAI-treated PSCs possess a much higher efficiency (20.06%) compared to the 3D perovskite (MA0.9FA0.1PbI3) devices (17.42%). Time-resolved photoluminescence and femtosecond transient absorption spectroscopy are employed to investigate the effect of surface passivation on the charge carrier dynamics of the 3D perovskite. Additionally, the stability test of TEAI-treated perovskite devices reveals significant improvement in humid (RH ∼ 46%) and thermal stability as the sulfur-based 2D (TEA)2PbI4 material self-assembles on the 3D surface, making the perovskite surface hydrophobic. Our findings provide a reliable approach to improve device stability and performance successively, paving the way for industrialization of PSCs.

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“…Specifically, the addition of (often chiral) solubilizing groups to a range of ETLs can result in the generation of stereoisomeric mixtures. [17,[29][30][31][32][33][34][35][36][37] Individual components of such mixtures are rarely isolated or studied independently and therefore the impact of such heterogeneity on performance is mostly unknown. We have advocated the potential value of chirality in optoelectronic technologies, which includes the specific study of single enantiomer chiral organic semiconducting molecules.…”

Section: Introductionmentioning

confidence: 99%

Enantiomerically Pure Fullerenes as a Means to Enhance the Performance of Perovskite Solar Cells

Shi

Zhuang

Zhou

et al. 2023

Advanced Energy Materials

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The rapidly advancing improvements in perovskite solar cells (PSCs) are driven, in part, by the inclusion of suitable electron transport layers (ETLs) in high performance devices. Fullerene derivatives are particularly useful ETLs in PSCs, but many of the utilized fullerenes are present as isomeric mixtures. The opportunities presented by single‐isomer, single‐enantiomer fullerenes in PSCs are poorly understood. Here, inverted PSCs are prepared using bis[60]phenyl‐C61‐butyric acid methyl ester derivative (anti)16,17‐bis[60]PCBM, comparing the performance of enantiomerically pure material to the corresponding racemate. The single enantiomer devices are found to have an improved performance, giving a power conversion efficiency (PCE) of 23.2%, compared to 20.1% PCE for the racemate. It is also shown that enantiomerically pure PSC modules can be prepared with a state‐of‐the‐art PCE of 20.1%. Such excellent performance for the single enantiomer devices is accompanied by enhanced operational stability. This study thus provides strong evidence that single isomer ETLs can provide important improvements in PSC performance and it positions chiral fullerenes as an exciting material class moving forward.

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Effects of solvent additives on the morphology and transport property of a perylene diimide dimer film in perovskite solar cells for improved performance

Cited by 18 publications

References 40 publications

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Surface Passivation by Sulfur-Based 2D (TEA)₂PbI₄ for Stable and Efficient Perovskite Solar Cells

Enantiomerically Pure Fullerenes as a Means to Enhance the Performance of Perovskite Solar Cells

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Effects of solvent additives on the morphology and transport property of a perylene diimide dimer film in perovskite solar cells for improved performance

Cited by 18 publications

References 40 publications

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer†

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer†

Surface Passivation by Sulfur-Based 2D (TEA)2PbI4 for Stable and Efficient Perovskite Solar Cells

Enantiomerically Pure Fullerenes as a Means to Enhance the Performance of Perovskite Solar Cells

Contact Info

Product

Resources

About

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Interface Engineering of Inverted Perovskite Solar Cells Using a Self‐doped Perylene Diimide Ionene Terpolymer as a Thickness‐Independent Cathode Interlayer^†

Surface Passivation by Sulfur-Based 2D (TEA)₂PbI₄ for Stable and Efficient Perovskite Solar Cells