Phenylfluorenamine-functionalized poly(N-vinylcarbazole)s as dopant-free polymer hole-transporting materials for inverted quasi-2D perovskite solar cells

Pan, Zhengwu; Gao, Han; Yang, Yingying; Zou, Qin; Peng, Darui; Yang, Pinghui; Cai, Jiangli; Qian, Jin; Li, Jiewei; Yin, Changlong; Wang, Nana; Li, Renzhi; Wang, Jianpu; Huang, Wei

doi:10.1016/j.jechem.2022.01.013

Cited by 11 publications

(8 citation statements)

References 47 publications

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“…Pan et al 142 introduced the N-(4-methoxyphenyl)-9,9dimethyl-9H-fluoren-2-amine (FMENPH) group into the side chain of PVK to design two NCPs: PVCz-DFMeNPh and PVCz-FMeNPh. In comparison with PTAA and PVCz-FMeNPh, PVCz-DFMeNPh, featuring more FMeNPh units, benefits from the flexibility of the polyethylene backbone and the excellent photoelectric properties of the FMENPH side chain groups.…”

Section: Interfaces Layermentioning

confidence: 99%

Enhanced Perovskite Photovoltaics with Non-conjugated Polymers: Recent Developments and Future Prospects

Liu,

Chen,

Gao

2024

ACS Appl. Polym. Mater.

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The rapid development of organic−inorganic hybrid perovskite has positioned it as an auspicious material for solar cells, given its high efficiency, flexibility, and cost-effectiveness. Since its introduction in 2009, perovskite solar cells (PSCs) have witnessed a remarkable increase in power conversion efficiency (PCE) from 3.8% to 26.1%. This review delves into various nonconjugated polymer (NCP) strategies that have played a crucial role in the success of perovskite devices, encompassing modifiers for the electron transport layer (ETL), polymer templates facilitating perovskite growth, and interface layers in the devices. This review aims to comprehensively outline the application strategies of NCP materials in PSCs, with potential advantages including enhanced charge extraction and transmission, improved light capture, enhanced device stability, and reduced hysteresis.

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Section: Interfaces Layermentioning

confidence: 99%

Enhanced Perovskite Photovoltaics with Non-conjugated Polymers: Recent Developments and Future Prospects

Liu,

Chen,

Gao

2024

ACS Appl. Polym. Mater.

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“…Meanwhile, the polar central core of DPBI could reduce the solubility of molecules in nonpolar solutions. N -(4-methoxyphenyl)-9,9-dimethyl-9 H -fluoren-2-amine ( X4 ) and bis(4-methoxyphenyl) amine ( X5 ) group were separately introduced as electron-donors to deliberate the effects of different electron donor capacities. – At the same time, as more polarized methoxy groups are introduced to the HTM molecules, the solubility of the materials in n -octane is further decreased. The incorporation of a benzene ring into X4 serves to expand intramolecular conjugation and strengthens intermolecular π–π stacking interactions.…”

Section: Introductionmentioning

confidence: 99%

Highly Solvent Resistant Small-Molecule Hole-Transporting Materials for Efficient Perovskite Quantum Dot Light-Emitting Diodes

Zhang,

Wei,

et al. 2023

ACS Appl. Mater. Interfaces

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Perovskite quantum dot light-emitting diodes (Pe-QLEDs) have been shown as promising candidates for nextgeneration displays and lightings due to their unique feature of wide color gamut and high color saturation. Hole-transporting materials (HTMs) play crucial roles in the device performance and stability of Pe-QLEDs. However, small-molecule HTMs have been less studied in Pe-QLEDs due to their poor solvent resistance and low hole mobility. In this work, three novel small-molecule HTMs employing benzimidazole as the center core, named X4, X5, and X6, were designed and synthesized for application in Pe-QLEDs. One of the tailored HTM-X6 exhibits excellent solvent resistant ability to the perovskite quantum dot (QD) inks due to its proper solubility and low surface energy. Our result clearly demonstrated that the synergistic effect of poor solubility and low surface energy facilitates the achievement of good solvent resistance to perovskite QD inks. As a result, a promising maximal external quantum efficiency (EQE) of 14.1% is achieved in X6-based CsPbBr 3 Pe-QLEDs, which is much higher than that of X4 (9.16%) and X5 (6.60%)-based devices, which is comparable to the PTAA reference (EQE ∼ 15.8%) under the same conditions. To the best of our knowledge, this is the first example that a benzimidazole-based small-molecule HTM demonstrated a good application in Pe-QLEDs. Our work provides new guidance for the rational design of small-molecule HTMs with high solvent resistance for efficient Pe-QLEDs and other photoelectronic devices.

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“…52 The solar efficiency of P5NH (donor−acceptor)based PSSC was reported as 18.1%, comparatively higher than P3HT (15.50%) and P25NH. 53 Recently, an N-(4-methoxyphenyl)-9,9-dimethyl-9H-fluoren-2-amine-functionalized poly(N-vinylcarbazole) dopant free polymer has been reported for high charge mobility in PSSC with 18.44% efficiency. 54 Oligo(ethylene glycol)-functionalized PTAA-based PSSC yielded a solar conversion efficiency of 22.26%.…”

Section: Introduction and Backgroundsmentioning

confidence: 99%

“…Sulfonated poly(thiophene-3-[2-(2-methoxyethoxy)ethoxy]-2,5-diyl) (S–P3MEET) was reported to yield impressive efficiency (17.25%) over PEDOT:PSS (14.97) . The solar efficiency of P5NH (donor–acceptor)-based PSSC was reported as 18.1%, comparatively higher than P3HT (15.50%) and P25NH . Recently, an N -(4-methoxyphenyl)-9,9-dimethyl-9 H -fluoren-2-amine-functionalized poly( N -vinylcarbazole) dopant free polymer has been reported for high charge mobility in PSSC with 18.44% efficiency .…”

Section: Introduction and Backgroundsmentioning

confidence: 99%

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

Kumar,

Maiti

2023

Energy Fuels

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Abundant solar energy has transformed the present solar photovoltaics owing to its rapid conversion into electrical energy without deteriorating ecosystem. Third generation (3G) energy conversion devices reveal utilization of photosensitizer, i.e., organic dye, quantum dots, and perovskite as functional absorbing materials to transform solar energy. Functional polymers are key ingredients (fuels) for the development of suitable redox potential and high temperature or humidity resistive charge transport medium. Electrolyte accelerates the photovoltaic reversible reaction (hole conduction) through exposure of a minimum energy barrier between the photoanode and cathode. Redox-active polymer enhances electrolyte uptake efficiency, ionic conductivity, and dimensional stability of solar device. Various electrolytes exhibit different functional activities due to their different redox energy. The functionalized polymer bears appropriate HOMO–LUMO energetics and low activation energy, which could adjust different photosensitizer with better compatibility. Therefore, the redox polymer percolates a redox couple at a photoexcited sensitizer through control of undesired reactions. It plays the important role of ion and electron transport mediator via expanding suitable interfacial energetics and band structure for photovoltaic reaction. The polymeric pendant groups (chemical environments) preserve electrolyte couples through reducing wettability and thus immobilize the active density of electrolyte anions for photovoltaic reactions. Thus, the polymer improves reversibility due to interfacial compatibility, electrolyte filtration effect, and synergistic stabilization. The present review focuses on polymer-derived functional electrolytes, photosensitizer–polymer interface, thermodynamic interactions, and power conversion efficiencies of 3G photovoltaic devices. Functional polymers open an avenue for the development of stable and efficient photovoltaic reactions at low cost based dyes, quantum dots, and perovskite-sensitized solar conversion systems.

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Phenylfluorenamine-functionalized poly(N-vinylcarbazole)s as dopant-free polymer hole-transporting materials for inverted quasi-2D perovskite solar cells

Cited by 11 publications

References 47 publications

Enhanced Perovskite Photovoltaics with Non-conjugated Polymers: Recent Developments and Future Prospects

Enhanced Perovskite Photovoltaics with Non-conjugated Polymers: Recent Developments and Future Prospects

Highly Solvent Resistant Small-Molecule Hole-Transporting Materials for Efficient Perovskite Quantum Dot Light-Emitting Diodes

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

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