Layer-by-layer slot-die coated high-efficiency organic solar cells processed using twin boiling point solvents under ambient condition

Yang, Yu; Feng, Erming; Li, Hengyue; Shen, Zichao; Liu, Wanrong; Guo, Jingbo; Luo, Qun; Zhang, Jidong; Lu, Guanghao; Ma, Chang‐Qi; Yang, Junliang

doi:10.1007/s12274-021-3576-8

Cited by 37 publications

(26 citation statements)

References 42 publications

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“…The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.202200629. system mainly include solvent treatment, [10][11][12] additive treatment, [13][14][15][16] interface engineering, [17][18][19][20] multi-component blend strategy, [21][22][23][24][25] and so on. Among them, the ternary blend strategy is proved to be an achievable means to improve the performance of the PM6:Y6-based system (as shown in Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, studies on PM6:Y6‐based devices have been reported in an endless stream. The most commonly used device optimization methods in the PM6:Y6‐based system mainly include solvent treatment, [ 10–12 ] additive treatment, [ 13–16 ] interface engineering, [ 17–20 ] multi‐component blend strategy, [ 21–25 ] and so on. Among them, the ternary blend strategy is proved to be an achievable means to improve the performance of the PM6:Y6‐based system (as shown in Figure c).…”

Section: Introductionmentioning

confidence: 99%

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Layer‐by‐Layer Processed PM6:Y6‐Based Stable Ternary Polymer Solar Cells with Improved Efficiency over 18% by Incorporating an Asymmetric Thieno[3,2‐b]indole‐Based Acceptor

Chen

Cao

Liu

et al. 2022

Adv Funct Materials

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Although much research on device engineering have brought about significant improvements in PM6:Y6-based polymer solar cell (PSCs) performance, there is still a lack of relevant research to solve the problems caused by the over-aggregation of Y6 and the long-term stability of the device morphology. Herein, a newly designed and synthesized low-bandgap asymmetric small molecule acceptor TIT-2Cl based on thieno[3,2-b]indole core is elaborately introduced into PM6:Y6-based PSCs to suppress the over-aggregation of Y6 molecules with significantly increased efficiency from 15.78% to 17.00%. Moreover, the addition of TIT-2Cl contributes to improved light harvesting, the lowest unoccupied molecular orbital level of Y6:TIT-2Cl, charge separation, transport, and extraction. Simultaneously, the PSCs are further prepared by using the progressive spin-coating method of layer-by-layer (LBL). Due to the formation of vertical phase distribution and the improvement of carrier transport performance, the champion efficiency of LBL-type ternary PSCs reaches 18.18%, which is the highest efficiency reported for PM6:Y6-based PSCs, along with superior stability and compositional insensitivity. Therefore, the results show that the combination of ternary strategy by incorporating appropriate asymmetric molecules and the LBL method is an effective means to fabricate highly efficient stable PSCs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Layer‐by‐Layer Processed PM6:Y6‐Based Stable Ternary Polymer Solar Cells with Improved Efficiency over 18% by Incorporating an Asymmetric Thieno[3,2‐b]indole‐Based Acceptor

Chen

Cao

Liu

et al. 2022

Adv Funct Materials

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“…After two pioneering works were reported, much effort has been made on optimizing processing solvents by several research groups. [ 30,32,33,36–39,47,57,60,62 ]…”

Section: Vertical P–i–n Morphology Controlmentioning

confidence: 99%

“…Here, an active layer of PM6 (CB solution) and Y6 (CF solution) was sequentially deposited using a slot‐die coating method. [ 57 ] In this method, it is important to control the solvent evaporation kinetics by thermal annealing treatment. First, the underlying PM6 layer was thermally annealed at different temperatures (70 °C, 100 °C, and 130 °C), followed by the deposition of a Y6 layer.…”

Section: Vertical P–i–n Morphology Controlmentioning

confidence: 99%

Recent Advances in Nonfullerene Acceptor‐Based Layer‐by‐Layer Organic Solar Cells Using a Solution Process

et al. 2022

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Recently, sequential layer‐by‐layer (LbL) organic solar cells (OSCs) have attracted significant attention owing to their favorable p–i–n vertical phase separation, efficient charge transport/extraction, and potential for lab‐to‐fab large‐scale production, achieving high power conversion efficiencies (PCEs) of over 18%. This review first summarizes recent studies on various approaches to obtain ideal vertical D/A phase separation in nonfullerene acceptor (NFAs)‐based LbL OSCs by proper solvent selection, processing additives, protecting solvent treatment, ternary blends, etc. Additionally, the longer exciton diffusion length of NFAs compared with fullerene derivatives, which provides a new scope for further improvement in the performance of LbL OSCs, is been discussed. Large‐area device/module production by LbL techniques and device stability issues, including thermal and mechanical stability, are also reviewed. Finally, the current challenges and prospects for further progress toward their eventual commercialization are discussed.

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“…As a promising green and renewable energy technology, thin-film organic solar cells (OSCs) have received worldwide interest and have developed quickly in recent decades due to their advantages, such as light weight, low cost, semitransparency, and flexibility [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Non-fullerene OSCs, in which small-molecule acceptors (SMAs) or polymer acceptors replace fullerene derivatives, are attracting significant attention in light of their easily tunable energetics and good light absorption and large charge mobility.…”

Section: Introductionmentioning

confidence: 99%

Efficient All-Polymer Solar Cells with Sequentially Processed Active Layers

et al. 2022

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In this work, we apply the sequential processing (SqP) method to address the relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on the polymerized small-molecule acceptor (PSMA). Compared to the blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via the SqP method show boosted electron mobility and a more balanced charge carrier transport, which increases the FF of the SqP device and compensates for the short-circuit current loss, rendering comparable overall performance with the BC device. Through film-depth-dependent light absorption spectroscopy, we analyze the sub-layer absorption and exciton generation rate in the vertical direction of the device, and discuss the effect of the increased electron mobility on device performance, accordingly.

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Layer-by-layer slot-die coated high-efficiency organic solar cells processed using twin boiling point solvents under ambient condition

Cited by 37 publications

References 42 publications

Layer‐by‐Layer Processed PM6:Y6‐Based Stable Ternary Polymer Solar Cells with Improved Efficiency over 18% by Incorporating an Asymmetric Thieno[3,2‐b]indole‐Based Acceptor

Layer‐by‐Layer Processed PM6:Y6‐Based Stable Ternary Polymer Solar Cells with Improved Efficiency over 18% by Incorporating an Asymmetric Thieno[3,2‐b]indole‐Based Acceptor

Recent Advances in Nonfullerene Acceptor‐Based Layer‐by‐Layer Organic Solar Cells Using a Solution Process

Efficient All-Polymer Solar Cells with Sequentially Processed Active Layers

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