Fullerene-free organic solar cells with an efficiency of 3.7% based on a low-cost geometrically planar perylene diimide monomer

Singh, Ranbir; Aluicio‐Sarduy, Eduardo; Kan, Zhipeng; Ye, T.; MacKenzie, Roderick C. I.; Keivanidis, Panagiotis E.

doi:10.1039/c4ta02851a

Cited by 96 publications

(99 citation statements)

References 38 publications

(43 reference statements)

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“…Therefore their designs are dictated by the requirement for bulky aliphatic side chains, 40,41 or framework substituents, [42][43][44] to mitigate large-scale aggregate formation. Despite the favorable accessibility of the perylene building block, their synthesis can be demanding and low yielding, with the formation of unwanted isomers a persistent challenge limiting their synthetic scalability.…”

Section: 39mentioning

confidence: 99%

The structural evolution of an isoindigo-based non-fullerene acceptor for use in organic photovoltaics

et al. 2015

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The structural evolution of a functional isoindigo-based non-fullerene acceptor led to the development of three new materials to address the deficiencies of the original framework. Owing to the versatility of the structure and the flexibility of the synthetic procedures, these three new materials were accessible from previously optimized reaction conditions and similar precursor materials. The influence of structural modification on the optical, electrochemical and thermal properties were assessed and correlated with DFT calculations to provide compelling evidence for the effect of each substitution and how they relate to each particular adaptation. The structure-property relationships were investigated for their photovoltaic performance in solution processable BHJ devices fabricated in inverted architectures. Evaluation of device performance demonstrated that a single modification did not improve on the efficiency of the original structure, but the combination of both induced nonplanarity, and increased electron affinity of the fourth iteration showed the potential of our framework, with PCE reaching 1.9%.

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Section: 39mentioning

confidence: 99%

The structural evolution of an isoindigo-based non-fullerene acceptor for use in organic photovoltaics

et al. 2015

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“…10,11 Thereafter, fullerene-free solar cells and specifically perylene derivatives have seen a drastic improvement in the PCE higher than 6%. [12][13][14][15][16][17][18][19][20][21] Recently, we demonstrated that disrupting the planarity of the perylene by perpendicularly orienting two units reduces the co-facial stacking and hence improved the blend morphology. This resulted in an order of magnitude increase in the short circuit current density in OPVs made from this acceptor material.…”

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confidence: 99%

Interface engineering for efficient fullerene-free organic solar cells

Shivanna

Rajaram

Narayan

2015

Applied Physics Letters

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We demonstrate the role of zinc oxide (ZnO) morphology and addition of an acceptor interlayer to achieve high efficiency fullerene-free bulk heterojunction inverted organic solar cells. Nanopatterning of the ZnO buffer layer enhances the effective light absorption in the active layer, and the insertion of a twisted perylene acceptor layer planarizes and decreases the electron extraction barrier. Along with an increase in current homogeneity, the reduced work function difference and selective transport of electrons prevent the accumulation of charges and decrease the electron-hole recombination at the interface. These factors enable an overall increase of efficiency to 4.6%, which is significant for a fullerene-free solution-processed organic solar cell.

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“…8b). Therefore, the PTB7-Th:SF-PDI4 blend films demonstrated higher SCLC mobilities and J SC comparing to the PTB7-Th:SF-PDI2 blend films since the face-on orientation is beneficial for vertical charge transport [73]. Based on the (010) diffraction peak (at q z~1 .59 Å À1 ) of blend films, the p-p stacking distance of the polymer backbones is calculated to be 3.95 Å.…”

Section: Resultsmentioning

confidence: 99%

Achieving high performance non-fullerene organic solar cells through tuning the numbers of electron deficient building blocks of molecular acceptors

Yang

Chen

et al. 2016

Journal of Power Sources

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Fullerene-free organic solar cells with an efficiency of 3.7% based on a low-cost geometrically planar perylene diimide monomer

Abstract: A PCE of 3.7% is achieved using a low-cost monomeric PDI derivative blended with a low energy gap donor-polymer.

Cited by 96 publications

References 38 publications

The structural evolution of an isoindigo-based non-fullerene acceptor for use in organic photovoltaics

The structural evolution of an isoindigo-based non-fullerene acceptor for use in organic photovoltaics

Interface engineering for efficient fullerene-free organic solar cells

Achieving high performance non-fullerene organic solar cells through tuning the numbers of electron deficient building blocks of molecular acceptors

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