Effect of Third Component on Efficiency and Stability in Ternary Organic Solar Cells: More than a Simple Superposition

Jung, Seungmin; Cho, Yongjoon; Kang, So‐Huei; Yoon, Seong‐Jun; Yang, Changduk

doi:10.1002/solr.202100819

Cited by 38 publications

(33 citation statements)

References 138 publications

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“…The phase separation length scales of the targeted blends were measured via the grazing-incidence small-angle X-ray scattering (GISAXS) technique using the Debye-Anderson-Brumberger equation as the fitting model. [59][60][61][62] Fig. 3a and d show the experimental results and fitting curves for PM6:eC11:BN-T (XY + PN) and PM6:eC9:BN-T (CB + DIO), respectively.…”

Section: Papermentioning

confidence: 99%

In situandex situinvestigations on ternary strategy and co-solvent effects towards high-efficiency organic solar cells

Yan

Fong

et al. 2022

Energy Environ. Sci.

106

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Section: Papermentioning

confidence: 99%

In situandex situinvestigations on ternary strategy and co-solvent effects towards high-efficiency organic solar cells

Yan

Fong

et al. 2022

Energy Environ. Sci.

106

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“…In comparison, both the Y-FIC-γe- and Y-ClIC-γe-based OSCs exhibited enhanced overall performances as both J SC and FF values increased, resulting in the PCE of 16.4 and 15.3%, respectively. Compared with Y-IC-γe, the higher film extinction coefficients of Y-FIC-γe and Y-ClIC-γe could in part contribute to the superior J SC values observed in the Y-FIC-γe- and Y-ClIC-γe-based OSCs. , The corresponding EQE spectra of the three OSCs cover a broad photoresponse range of 300–900 nm ( Figure b). The integrated J SC values from the EQE response are 22.14, 24.82, and 24.32 mA cm –2 for Y-IC-γe-, Y-FIC-γe-, and Y-ClIC-γe-based OSCs, respectively, which is consistent with the measured values from the J – V curves within a 5% mismatch.…”

Section: Resultsmentioning

confidence: 99%

γ-Ester-Functionalized 1,1-Dicyanomethylene-3-indanone End-Capped Nonfullerene Acceptors for High-Performance, Annealing-Free Organic Solar Cells

Lee

Park

Jeong

et al. 2022

ACS Appl. Mater. Interfaces

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Modifying the end-capping groups in nonfullerene acceptors (NFAs) is an effective strategy for modulating their properties and that of the entire NFAs. This study reports the synthesis of a novel γ-ester-functionalized IC end-capping group (IC-γe) and its incorporation into the benzothiadiazole-fused central core, yielding isomer-free IC-γe end-capped NFAs, such as Y-IC-γe, Y-FIC-γe, and Y-ClIC-γe. The resultant NFAs exhibited similar absorption profiles but upshifted the lowest unoccupied molecular orbital energy level compared with those of the ester-free analogues, such as Y6 and Y7. Without thermal annealing, an excellent power conversion efficiency (PCE) of 16.4% is realized in the annealing-free OSC based on Y-FIC-γe with the PM6 donor polymer, which outperforms the OSCs based on Y-IC-γe and Y-ClIC-γe. In addition, the OSCs based on asymmetric Y-FIC-γe and Y-ClIC-γe have higher thermal stability with more than 83% PCE retention at an elevated temperature after 456 h than the symmetric Y-IC-γe case. In this study, we not only establish the structure–property relationship regarding the ester functionality and symmetricity tuning on the NFAs but also diagnose the reasons for the best-performing Y-FIC-γe-based OSCs, providing useful information for a novel high-performing NFA design strategy.

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“…[11] Consequently, there is a dire need to come up with a system that can help solve this M w problem. Considering the remarkable attributes of the 3D aggregation-induced emission (AIE) material, tetraphenylethylene [TPE] molecule, which has been utilized as the third component to enhance the acceptor domain purity within a polymer-based BHJ by ternary strategy, [24][25][26] we hypothesized that the inclusion of TPE in low M w systems might be able to regulate the BHJ morphology similar to what has been observed earlier, and thus, would enable the low M w systems to perform comparably to the high M w systems.…”

Section: Introductionmentioning

confidence: 99%

Utilizing Ternary Strategy to Reduce the Influence of Polymer Batch‐to‐Batch Variation in Organic Solar Cells

et al. 2022

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Despite producing the best device performances, several major issues such as the batch‐to‐batch variation and low molecular weight (M w) optimization greatly hinder the progress for the organic solar cells. Herein, tetraphenylethylene (TPE) as a third component has been added in a series of PM6:Y6 blends with different donor molecular weights (42–129 kDa). Ultimately, ternary devices fabricated by the PM6 with about half the M w (66 and 74 kDa) of the standard donor (129 kDa) produce an excellent power conversion efficiency (PCE) of 15.09% and 15.15% owing to enhanced morphology and charge mobility, as compared to a standard binary PCE of 15.65%, respectively, indicating the possibility of attaining high‐performance attributes from low M w polymers. Furthermore, the TPE inclusion in the 129 kDa binary blend leads to a remarkable PCE of 16.48%. This strategy, therefore, illustrates a relatively simple approach to overcome the batch‐to‐batch variation problem associated with polymers for organic solar cells.

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Effect of Third Component on Efficiency and Stability in Ternary Organic Solar Cells: More than a Simple Superposition

Abstract: Scheme 1. Chemical structures of representative donor materials in ternary OSCs.

Cited by 38 publications

References 138 publications

In situandex situinvestigations on ternary strategy and co-solvent effects towards high-efficiency organic solar cells

In situandex situinvestigations on ternary strategy and co-solvent effects towards high-efficiency organic solar cells

γ-Ester-Functionalized 1,1-Dicyanomethylene-3-indanone End-Capped Nonfullerene Acceptors for High-Performance, Annealing-Free Organic Solar Cells

Utilizing Ternary Strategy to Reduce the Influence of Polymer Batch‐to‐Batch Variation in Organic Solar Cells

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