Ternary organic solar cells with enhanced charge transfer and stability combining the advantages of polymer acceptors and fullerene acceptors

Yu, Xin; Lin, Hui; Li, Minglang; Ma, Benteng; Zhang, Ruixuan; Du, Xiaoyang; Zheng, Caijun; Yang, Gang; Tao, Silu

doi:10.1016/j.orgel.2022.106471

Cited by 11 publications

(11 citation statements)

References 70 publications

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“…With the strong self-assembly of BTR-Cl liquid crystal molecules previously reported in the literature and the good compatibility with D18-Cl and N3 derived from the previous test conclusions, these results can be speculated that the diffusion of BTR-Cl into the coblended membrane regulates the interface and form a more stable form in the active layer. Further effectively improves the long-term stability of OSCs. , …”

Section: Resultsmentioning

confidence: 99%

Efficient and Stable Ternary Organic Solar Cells Using Liquid Crystal Small Molecules with Multiple Synergies

Wen

Lin

et al. 2022

ACS Appl. Energy Mater.

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A liquid crystal small molecule donor BTR-Cl, which has strong self-assembly and crystallinity, is used as the third component to construct nonfullerenes ternary solar cells together with a broad-band donor polymer D18-Cl and a low-band acceptor N3. The introduction of BTR-Cl enhances the morphology, exciton dissociation, and charge mobility of the ternary blends, improves the short-circuit current density and fill factor, and results in an efficiency of up to 17.92%. Further results show that BTR-Cl acts as an energy level mediator, fluorescence resonance energy transfer and charge transfer intermediary, and morphology modifier in ternary blends. They work synergistically in ternary blends to optimize the electrical and morphological properties, resulting in enhanced photovoltaic performance and improved stability and detection performance. It brings vitality to the field of organic solar cells (OSCs) and organic photodetectors (OPDs) research.

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Section: Resultsmentioning

confidence: 99%

Efficient and Stable Ternary Organic Solar Cells Using Liquid Crystal Small Molecules with Multiple Synergies

Wen

Lin

et al. 2022

ACS Appl. Energy Mater.

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“…Thus, a fullerene derivative can be added as an additive to achieve high device performance and mechanical stability for practical applications. Primarily, Tao et al observed that the small energy offset between the HOMO and LUMO of PY-IT (Figure ) and those of PM6 resulted in limited charge transport, leading to low J sc value for the corresponding device . Consequently, they found that the addition of PC 71 BM (Figure ) with a deep HOMO level enhanced the performance of the device by realizing a HOMO energy level cascade.…”

Section: Polymer Acceptors For Non-binary Active Layermentioning

confidence: 97%

“…Primarily, Tao et al observed that the small energy offset between the HOMO and LUMO of PY-IT (Figure 2) and those of PM6 resulted in limited charge transport, leading to low J sc value for the corresponding device. 85 Consequently, they found that the addition of PC 71 BM (Figure 5) with a deep HOMO level enhanced the performance of the device by realizing a HOMO energy level cascade. The PM6:PY-IT:PC 71 BM ternary system demonstrated improved V oc , J sc , and FF with a PCE value of 16.36% (Table 2).…”

Section: Ternary Blend Strategy 211 Fullerene Derivative As a Third C...mentioning

confidence: 99%

Y-Series-Based Polymer Acceptors for High-Performance All-Polymer Solar Cells in Binary and Non-binary Systems

et al. 2022

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Recently, all-polymer solar cells (all-PSCs) have made significant progress in terms of efficiency and performance. Using Y-series-based small-molecule acceptors, a new range of polymer acceptors for all-PSC has been developed. These synthesized polymer acceptors have a low band gap, broad absorption, and easily tunable energy levels, making them suitable n-type candidates for efficient all-PSCs. In this review, we summarize some molecular design and synthesis strategies used to advance the field of innovative materials and device engineering involving Y-series-based polymer acceptors to achieve a power conversion efficiency greater than 18% in all-PSCs.

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“…Although they currently face strong competition from non-fullerene organic acceptors, exhibiting higher open-circuit voltages and up to 18% efficiency [ 6 , 7 ], they are still a strong alternative to such non-fullerene acceptors, especially in terms of the charge carrier mobility values. Recently, research has been underway on ternary blends containing both fullerene and non-fullerene acceptors [ 8 ] to take advantage of the specific benefits of each. Moreover, the use of fullerene derivatives in layered photovoltaic perovskite structures as electron-transporting and hole-blocking layers is becoming very common.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties and Light-Induced Charge Transfer in Selected Aromatic C60 Fullerene Derivatives and in Their Bulk Heterojunctions with Poly(3-Hexylthiophene)

et al. 2022

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Fullerene derivatives offer great scope for modification of the basic molecule, often called a buckyball. In recent years, they have been the subject of numerous studies, in particular in terms of their applications, including in solar cells. Here, the properties of four recently synthesized fullerene C60 derivatives were examined regarding their optical properties and the efficiency of the charge transfer process, both in fullerene derivatives themselves and in their heterojunctions with poly (3-hexylthiophene). Optical absorption, electron spin resonance (ESR), and time-resolved photoluminescence (TRPL) techniques were applied to study the synthesized molecules. It was shown that the absorption processes in fullerene derivatives are dominated by absorption of the fullerene cage and do not significantly depend on the type of the derivative. It was also found by ESR and TRPL studies that asymmetrical, dipole-like derivatives exhibit stronger light-induced charge transfer properties than their symmetrical counterparts. The observed inhomogeneous broadening of the ESR lines indicated a large disorder of all polymer–fullerene derivative blends. The density functional theory was applied to explain the results of the optical absorption experiments.

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Ternary organic solar cells with enhanced charge transfer and stability combining the advantages of polymer acceptors and fullerene acceptors

Cited by 11 publications

References 70 publications

Efficient and Stable Ternary Organic Solar Cells Using Liquid Crystal Small Molecules with Multiple Synergies

Efficient and Stable Ternary Organic Solar Cells Using Liquid Crystal Small Molecules with Multiple Synergies

Y-Series-Based Polymer Acceptors for High-Performance All-Polymer Solar Cells in Binary and Non-binary Systems

Optical Properties and Light-Induced Charge Transfer in Selected Aromatic C60 Fullerene Derivatives and in Their Bulk Heterojunctions with Poly(3-Hexylthiophene)

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