Impact of Synthetic Route on Photovoltaic Properties of Isoindigo‐Containing Conjugated Polymers

Tepliakova, Marina M.; Kuznetsov, Ilya E.; Avilova, Irina A.; Stevenson, Keith J.; Akkuratov, Alexander V.

doi:10.1002/macp.202100136

Cited by 2 publications

(2 citation statements)

References 36 publications

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“…Thin films of conjugated polymers P1 – P3 were spin-coated from chlorobenzene solutions on top of the perovskite layer using preliminary optimized deposition conditions, and PTAA was used as a reference HTM. The detailed procedure was reported previously [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

Novel Push-Pull Benzodithiophene-Containing Polymers as Hole-Transport Materials for Efficient Perovskite Solar Cells

et al. 2022

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Donor-acceptor conjugated polymers are considered advanced semiconductor materials for the development of thin-film electronics. One of the most attractive families of polymeric semiconductors in terms of photovoltaic applications are benzodithiophene-based polymers owing to their highly tunable electronic and physicochemical properties, and readily scalable production. In this work, we report the synthesis of three novel push–pull benzodithiophene-based polymers with different side chains and their investigation as hole transport materials (HTM) in perovskite solar cells (PSCs). It is shown that polymer P3 that contains triisopropylsilyl side groups exhibits better film-forming ability that, along with high hole mobilities, results in increased characteristics of PSCs. Encouraging a power conversion efficiency (PCE) of 17.4% was achieved for P3-based PSCs that outperformed the efficiency of devices based on P1, P2, and benchmark PTAA polymer. These findings feature the great potential of benzodithiophene-based conjugated polymers as dopant-free HTMs for the fabrication of efficient perovskite solar cells.

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Section: Resultsmentioning

confidence: 99%

Novel Push-Pull Benzodithiophene-Containing Polymers as Hole-Transport Materials for Efficient Perovskite Solar Cells

et al. 2022

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“…In the next step, materials H1-4 were investigated in PSCs with n-i-p configurations reported previously [ 28 ]. The detailed procedures of the devices’ fabrications are provided in the materials and methods section.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Backbone Fluorination and Side-Chain Position in Thiophene-Benzothiadiazole-Based Hole-Transport Materials on the Performance and Stability of Perovskite Solar Cells

Tepliakova

Kuznetsov

Mikheeva

et al. 2022

IJMS

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Perovskite solar cells (PSCs) currently reach high efficiencies, while their insufficient stability remains an obstacle to their technological commercialization. The introduction of hole-transport materials (HTMs) into the device structure is a key approach for enhancing the efficiency and stability of devices. However, currently, the influence of the HTM structure or properties on the characteristics and operational stability of PSCs remains insufficiently studied. Herein, we present four novel push-pull small molecules, H1-4, with alternating thiophene and benzothiadiazole or fluorine-loaded benzothiadiazole units, which contain branched and linear alkyl chains in the different positions of terminal thiophenes to evaluate the impact of HTM structure on PSC performance. It is demonstrated that minor changes in the structure of HTMs significantly influence their behavior in thin films. In particular, H3 organizes into highly ordered lamellar structures in thin films, which proves to be crucial in boosting the efficiency and stability of PSCs. The presented results shed light on the crucial role of the HTM structure and the morphology of films in the performance of PSCs.

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Impact of Synthetic Route on Photovoltaic Properties of Isoindigo‐Containing Conjugated Polymers

Cited by 2 publications

References 36 publications

Novel Push-Pull Benzodithiophene-Containing Polymers as Hole-Transport Materials for Efficient Perovskite Solar Cells

Novel Push-Pull Benzodithiophene-Containing Polymers as Hole-Transport Materials for Efficient Perovskite Solar Cells

The Impact of Backbone Fluorination and Side-Chain Position in Thiophene-Benzothiadiazole-Based Hole-Transport Materials on the Performance and Stability of Perovskite Solar Cells

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