Benzo[1,2-b:4,5-b′]difuran and furan substituted diketopyrrolopyrrole alternating copolymer for organic photovoltaics with high fill factor

Du, Jia; Fortney, Andria; Washington, Katherine E.; Kowalewski, Tomasz; Stefan, Mihaela C.

doi:10.1039/c7ta04618a

Cited by 26 publications

(33 citation statements)

References 71 publications

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“…GM. This has been attributed to the fact that the presence of furan in a copolymer backbone enhances the coplanarity of the conjugated structure, as confirmed by optimized geometry calculation performed in this study, and this is because the oxygen atom has less diameter than the sulfur atom, is more electronegative and has a larger dipole moment 7 . With a planar structure, promoted π-stacking is encouraged, desirable for higher charge carrier mobility for furan-based relative to thiophene-based copolymers 8,16,60 .…”

Section: Two Photon Excited Fluorescence (Tpef)supporting

confidence: 67%

“…In the study of structure-functional relationship of organic photovoltaic materials, the use of specific heteroatoms (especially chalcogens) to tune the properties of the conjugated polymers has been widely employed 9,12,17,18,64 . Different side chain configurations have also been tried out to evaluate the polymer's processability, if eventually made into films 7,19,29,64,65 . In this study,…”

Section: Discussionmentioning

confidence: 99%

“…Conjugated polymers (CPs) have been shown to be useful materials for efficient solar cell (photovoltaic) applications [1][2][3][4][5][6][7][8][9][10][11][12][13] . In recent years, there have been many efforts not only to provide important device parameters regarding the use of organic polymers but to also probe the many structure-function relationships in the entire organic photovoltaic system.…”

Section: Introductionmentioning

confidence: 99%

“…There have been several structure-function studies of organic devices in terms of the structure of the polymer and fundamental parameters of the working device such as the fill factor (FF), turn on voltage and mobility in addition to the power conversion efficiency (PCE) of the solar cell 7,9,[14][15][16] . Other structure-function relationships look more inward and probe the molecular attributes of the polymers in order to provide insight in to the physical-chemical properties which ultimately dictate their device behavior 17,18 .…”

Section: Introductionmentioning

confidence: 99%

“…However, there remains some particular questions regarding the mechanism (electronic, charge related, photon or energy transfer) of the photovoltaic effect in this system. Other derivatives of PTB7 have been created and the suitable functionality has enabled the critical structure-function analysis of the system both at the molecular level as well as in terms of the device properties 2,3,[7][8][9]12,17,23 . For example, adding electronegative fluorine substituents to the backbone of the donor-conjugated polymer has become a popular and effective strategy for improving the PCE of polymer solar cells.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-b:5,6-b′]difuran Donor Polymers

et al. 2018

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Section: Two Photon Excited Fluorescence (Tpef)supporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-b:5,6-b′]difuran Donor Polymers

et al. 2018

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Developments of Diketopyrrolopyrrole‐Dye‐Based Organic Semiconductors for a Wide Range of Applications in Electronics

2019

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In recent times, fused aromatic DiketoPyrroloPyrrole-(DPP)-based functional semiconductors have attracted considerable attention in the developing field of organic electronics. Over the past few years, DPP-based semiconductors have demonstrated remarkable improvements in the performance of both organic field-effect transistor (OFET) and organic photovoltaic (OPV) devices due to the favourable features of the DPP unit, such as excellent planarity and better electron-withdrawing ability. Driven by this success, DPPbased materials are now being exploited in various other electronic devices including complementary circuits, memory devices, chemical sensors, photodetectors, perovskite solar cells, organic light-emitting diodes, and more. Recent developments in the use of DPP-based materials for a wide range of electronic devices are summarized, focusing on OFET, OPV, and newly developed devices with a discussion of device performance in terms of molecular engineering. Useful guidance for the design of future DPP-based materials and the exploration of more advanced applications is provided.

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A Benzo[1,2‐b:4,5‐b′]Difuran Based Donor Polymer Achieving High‐Performance (>17%) Single‐Junction Organic Solar Cells with a Fill Factor of 80.4%

Pan

Chen

et al. 2022

Advanced Energy Materials

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In the field of non‐fullerene organic solar cells (OSCs), most of the promising polymer donors are based on benzo[1,2‐b:4,5‐b′]dithiophene (BDT) units while benzo[1,2‐b:4,5‐b′]difuran (BDF)‐based polymers have drawn less attention since the efficiencies of BDF polymer‐based devices are generally lower than those of BDT polymer‐based ones. In this contribution, the BDT unit in a polymer donor named D18 is replaced with a BDF unit, and a new polymer named D18‐Fu is synthesized. As a highly‐crystalline molecule named Y6‐1O is chosen as the acceptor, the efficiency of binary devices based on D18‐Fu can reach 16.38%. Furthermore, when one of fullerene derivatives PC71BM is added, the ternary devices based on D18‐Fu achieve an efficiency of 17.07% and a high fill factor (FF) of 80.4%, both of which are the highest values among those of BDF polymer‐based devices. For comparison, D18‐based ternary devices show an inferior efficiency of 15.61% mainly due to the lower FF of 73.9%. Subsequent characterization reveals that D18‐Fu possesses a more coplanar molecular geometry, leading to better morphology and higher charge mobility for a promising FF. The high performance shown in this work demonstrates the potential role of BDF units in the design of polymer donors for highly efficient OSCs.

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Benzo[1,2-b:4,5-b′]difuran and furan substituted diketopyrrolopyrrole alternating copolymer for organic photovoltaics with high fill factor

Abstract: The alternative polymer featuring sustainable furan units were reported for organic photovoltaics with systematic investigation in its morphology.

Cited by 26 publications

References 71 publications

Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-b:5,6-b′]difuran Donor Polymers

Heteroatom and Side Chain Effects on the Optical and Photophysical Properties: Ultrafast and Nonlinear Spectroscopy of New Naphtho[1,2-b:5,6-b′]difuran Donor Polymers

Developments of Diketopyrrolopyrrole‐Dye‐Based Organic Semiconductors for a Wide Range of Applications in Electronics

A Benzo[1,2‐b:4,5‐b′]Difuran Based Donor Polymer Achieving High‐Performance (>17%) Single‐Junction Organic Solar Cells with a Fill Factor of 80.4%

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