Enhanced photovoltaic efficiency via light-triggered self-assembly

Kumar, Rohan J.; Churches, Quentin I.; Subbiah, Jegadesan; Gupta, Akhil; Ali, Abdelsalem; Evans, Richard A.; Holmes, Andrew B.

doi:10.1039/c3cc43841d

Cited by 42 publications

(26 citation statements)

References 20 publications

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“…These self‐assembly process and related optoelectronic properties were also exploited recently by the group of Kumar et al. to improve the efficiency of OPVs 11f. We have also probed the physical reasons for such a conductivity in these wires by studying their electronic, optical, and magnetic signatures, which were fully explained by the formation of highly efficient charge‐transfer complexes (characterized as supramolecular polarons) between triarylammonium radicals and neutral triarylamines in the stacked structures 11g.…”

Section: Introductionmentioning

confidence: 84%

Control over Nanostructures and Associated Mesomorphic Properties of Doped Self‐Assembled Triarylamine Liquid Crystals

Domoto

Busseron

Maaloum

et al. 2014

Chemistry A European J

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We have synthesized a series of triarylamine-cored molecules equipped with an adjacent amide moiety and dendritic peripheral tails in a variety of modes. We show by (1) H NMR and UV/Vis spectroscopy that their supramolecular self-assembly can be promoted in solution upon light stimulation and radical initiation. In addition, we have probed their molecular arrangements and mesomorphic properties in the bulk by integrated studies on their film state by using differential scanning calorimetry (DSC), variable-temperature polarizing optical microscopy (VT-POM), variable-temperature X-ray diffraction (VT-XRD), and atomic force microscopy (AFM). Differences in the number and the disposition of the peripheral tails significantly affect their mesomorphic properties associated with their lamellar- or columnar-packed nanostructures, which are based on segregated stacks of the triphenylamine cores and the lipophilic/lipophobic periphery. Such structural tuning is of interest for implementation of these soft self-assemblies as electroactive materials from solution to mesophases.

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Section: Introductionmentioning

confidence: 84%

Control over Nanostructures and Associated Mesomorphic Properties of Doped Self‐Assembled Triarylamine Liquid Crystals

Domoto

Busseron

Maaloum

et al. 2014

Chemistry A European J

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“…To our knowledge, there are no reports on the conjoint use of DBS and IDO building blocks to generate a non‐fullerene electron acceptor for solution‐processable BHJ devices. The present work is a continuation of our efforts on the design and development of small‐molecule chromophores for organic electronic devices …”

Section: Introductionmentioning

confidence: 99%

Conjoint use of Dibenzosilole and Indan‐1,3‐dione Functionalities to Prepare an Efficient Non‐Fullerene Acceptor for Solution‐Processable Bulk‐Heterojunction Solar Cells

et al. 2015

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As olution-processable, non-fullerene electron acceptor,2 ,2'-( ((5,5-dioctyl-5 H-dibenzo[b,d]silole-3,7-diyl)bis-(thiophene-5,2-diyl))bis(methanylylidene))bis(1 H-indene-1,3(2 H)-dione) (called N5)c omprised of dibenzosilole and 1,3-indanedione building blocks was designed, synthesized, and fully characterized. N5 is highly soluble in variousorganic solvents, has high thermals tability,a nd has energy levels matching those of archetypal donor poly(3-hexylthiophene).Solution-processable, bulk-heterojunction solar cells afforded promising power conversion efficiency of 2.76 %w hen N5 was used as an on-fullerene electron acceptor along with the conventional donorp olymer poly(3-hexylthiophene). As per our knowledge,t he material reported herein is the first example in the literature where synchronous use of such building blocks is demonstrated in the design an efficient, non-fullerene acceptor.

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“…B3 is the first non-fullerene electron acceptor in the literature with DBS as a core and NDI as arms. The present work is a continuation of our efforts on the design and development of small molecular chromophores for organic electronic applications [32][33][34][35].…”

Section: Introductionmentioning

confidence: 95%

Crowning of dibenzosilole with a naphthalenediimide functional group to prepare an electron acceptor for organic solar cells

et al. 2015

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A novel, solution-processable non-fullerene electron acceptor 9,d]silole-3,7-diyl)bis(2,7-dioctyl-4-(octylamino)benzo[lmn] [3,8]phenanthroline-1,3,6,8(2H,7H)-tetraone) (B3) based on dibenzosilole and naphthalenediimide building blocks was designed, synthesized, characterized and successfully used in a bulkheterojunction organic solar cells. B3 displayed excellent solubility, thermal stability and acquired electron energy levels matching with those of archetypal donor polymer poly(3hexylthiophene). Solution-processable bulk-heterojunction devices afforded 1.16% power conversion efficiency with a high fill factor of 53%. B3 is the first example in the literature using this design principle, where mild donor units at the peripheries of end-capped naphthalenediimide units tune solubility and optical energy levels simultaneously. 1.

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Enhanced photovoltaic efficiency via light-triggered self-assembly

Cited by 42 publications

References 20 publications

Control over Nanostructures and Associated Mesomorphic Properties of Doped Self‐Assembled Triarylamine Liquid Crystals

Control over Nanostructures and Associated Mesomorphic Properties of Doped Self‐Assembled Triarylamine Liquid Crystals

Conjoint use of Dibenzosilole and Indan‐1,3‐dione Functionalities to Prepare an Efficient Non‐Fullerene Acceptor for Solution‐Processable Bulk‐Heterojunction Solar Cells

Crowning of dibenzosilole with a naphthalenediimide functional group to prepare an electron acceptor for organic solar cells

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