Non-fullerene acceptor alloy strategy enabling stable ternary polymer solar cells with efficiency of 17.74%

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

doi:10.1039/d1tc05228d

Cited by 16 publications

(13 citation statements)

References 64 publications

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“…If n is close to 2, the trap-induced charge carrier complex dominates. 30 As shown in Figure 3d, the parameters (n) are about 1.565, 1.790, and 1.521 for OSCs with D18-Cl:N3, BTR-Cl:N3, and D18-Cl:BTR-Cl:N3, respectively. This result suggests that the addition of a moderate amount of BTR-Cl can effectively reduce trap-assisted recombination, which helps to improve PCE.…”

Section: Charge Transfer and Recombinationmentioning

confidence: 86%

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: Charge Transfer and Recombinationmentioning

confidence: 86%

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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“…Boosting photovoltaic performance of ternary OSCs by applying another Y6 analogue guest acceptor into the PM6:Y6 binary system has also been investigated by some researchers. − The Y6 derivatives are usually developed by slightly tuning the end groups and/or alkyl chains of Y6, resulting in a similar optical bandgap and energy level with Y6. The two Y series acceptors with similarities in chemical structures are beneficial to enhance compatibility and form a well-mixed alloy state. , For ternary devices with alloyed acceptors, V oc can be effectively tuned by controlling the mixing mass ratio of the two acceptors.…”

Section: Progress On Materials Developmentmentioning

confidence: 99%

Engineering Non-fullerene Acceptors as a Mechanism to Control Film Morphology and Energy Loss in Organic Solar Cells

et al. 2022

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Solution processable thin-film organic solar cells (TFOSCs) have attracted a lot of research attention in the past few decades, in the search for low-cost, flexible, and portable solar panels. In light of this, tremendous progress has been made in terms of improving materials design, device architecture, and ease of device fabrication processes. The choice of the donor and acceptor materials in the preparation of a polymer blend bulk heterojunction (BHJ) solar absorber medium is of great importance to the overall performance of organic solar cells (OSCs). The limitation in tuning the energy band structures of fullerene molecules poses significant challenges to the progress in BHJ organic solar cells. In an attempt to cater to the challenges, small-molecule non-fullerene acceptors (NFAs) came into the OSC research space with the possibility of altering the optoelectronic properties of the polymer molecules that bring OSCs closer to the realization of full-scale commercialization. This review discusses the role of NFAs in improving film morphology and reducing energy loss in TFOSCs. The recent development in engineering non-fullerene acceptors for solar energy conversion is presented and discussed in terms of reducing energy loss, improving solar cell performances.

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“…At that time, absorption spectra concentrated in the visible region need to be widened further, and therefore, some polymer donors with strong absorption were used as the third component in OSCs. [26][27][28][29][30] With an in-depth study of non-fullerene small molecule non-fullerene acceptors (NFAs), recent TOSCs generally contain one donor and two compatible NFAs with complementary absorption, cascading energy levels, and/or similar structural properties, [31][32][33][34][35] and current PCEs of over 19% are reported for ternary systems. 36 The development in this eld is rapidly promoted by the invention of wide bandgap polymer donors (such as PM6, 37 PTQ10 (ref.…”

Section: Introductionmentioning

confidence: 99%

High-performance ternary solar cells by introducing a medium bandgap acceptor with complementary absorption, reducing energy disorder and enhancing glass transition temperature

et al. 2022

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Non-fullerene acceptor alloy strategy enabling stable ternary polymer solar cells with efficiency of 17.74%

Abstract: For optimizing the performance of photovoltaic devices, fabricating ternary organic solar cells (TOSCs) is a common strategy. However, the hybrid system involves complex intermolecular interactions, which poses a challenge to...

Cited by 16 publications

References 64 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

Engineering Non-fullerene Acceptors as a Mechanism to Control Film Morphology and Energy Loss in Organic Solar Cells

High-performance ternary solar cells by introducing a medium bandgap acceptor with complementary absorption, reducing energy disorder and enhancing glass transition temperature

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