Manipulating the solubility properties of polymer donors for high-performance layer-by-layer processed organic solar cells

Ning, Haijun; Jiang, Qiuju; Han, Pengwei; Lin, Man; Zhang, Gongya; Chen, Jin‐Ming; Chen, Hui; Zeng, Shuyi; Gao, Jin-Ping; Liu, Jiangang; He, Feng; Wu, Qinghe

doi:10.1039/d1ee01336j

Cited by 66 publications

(70 citation statements)

References 52 publications

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“…Very recently, LbL-PSCs have attracted more attention with acceptable PCE in comparison with that of BHJ-PSCs. [6,[14][15][16][17][18][19][20][21] Here, we summarized the typical works on comparative study about LbL and BHJ-PSCs; the key photovoltaic parameters of LbL and BHJ-PSCs are listed in Table 1. After well-analyzing the photovoltaic parameters, it is difficult to give a definitive conclusion on the advantages of LbL-PSCs or BHJ-PSCs.…”

Section: Introductionmentioning

confidence: 99%

Smart Ternary Strategy in Promoting the Performance of Polymer Solar Cells Based on Bulk‐Heterojunction or Layer‐By‐Layer Structure

Son

Jeong

et al. 2021

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Although the rapid development of polymer solar cells (PSCs) has been achieved, it is still a great challenge to explore efficient ways for improving power conversion efficiency (PCE) of PSCs from materials and device engineering. Ternary strategy has been confirmed as an efficient way to improve PCE of PSCs by employing three kinds of materials. In this work, one polymer donor PM6, and two non‐fullerene materials N3 and MF1 are selected to prepare ternary PSCs with layer‐by‐layer (LbL) or bulk‐heterojunction (BHJ) structure. The LbL and BHJ‐PSCs exhibit PCEs of 16.75% and 16.76% with 15 wt% MF1 content in acceptors, corresponding to over 5% or 4% PCE improvement compared with N3‐based binary PSCs with LbL or BHJ structure. The PCE improvement is mainly attributed to the fill factor enhancement from 73.29% to 76.95% for LbL‐PSCs or from 74.13% to 77.51% for BHJ‐PSCs by employing the ternary strategy. This work indicates that ternary strategy has great potential in preparing highly efficient LbL‐PSCs via simultaneously optimizing molecular arrangement and the thickness of each layer.

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Section: Introductionmentioning

confidence: 99%

Smart Ternary Strategy in Promoting the Performance of Polymer Solar Cells Based on Bulk‐Heterojunction or Layer‐By‐Layer Structure

Son

Jeong

et al. 2021

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114

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“…Such a structure was defined previously as a quasiplanar heterojunction (Q-PHJ). [32][33][34][35] In the Q-PHJ structure, each component of the bilayer can be separately optimized, which facilitates better control of the active layer morphology and targeted analysis. This kind of structure achieves efficient exciton dissociation without adversely affecting the transports of the carriers in either the polymer donor or acceptor layers, and the carrier recombination could be reduced significantly.…”

Section: Introductionmentioning

confidence: 99%

Quasiplanar Heterojunction All‐Polymer Solar Cells: A Dual Approach to Stability

Cao

Wang

Qiu

et al. 2022

Adv Funct Materials

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In addition to efficiency, stability is another key factor in developing organic solar cells. The quasiplanar heterojunction (Q-PHJ) structure, combining two pure layers as major and tiny nanoscale bulk heterojunction (BHJ) at interface, demonstrates superior device stability compared with BHJ devices. In this contribution, the polymer donor, PBQx-H-TF, and configurationally defined polymeric acceptor, PBTIC-γ-TSe are synthesized and used to fabricate bilayer devices by orthogonal solvents, the corresponding Q-PHJ all-polymer solar cells (all-PSCs) deliver reliable stability with high efficiency. An encouraging PCE of 15.77% is achieved, which is the highest one among Q-PHJ all-PSCs with real-bilayer structure. There is a major improvement over the 13.91% PCE in the BHJ device, and the carrier transport performance is improved substantially following the reduction of recombination in the Q-PHJ all-PSCs. Benefiting from the bilayer morphology, the stability of Q-PHJ all-PSCs has been greatly enhanced over that of the BHJ devices. The charge recombination process is also more serious in the aging BHJ compared with the aging Q-PHJ all-PSCs. This work inspires the application of Q-PHJ in the preparation of high-efficient all-PSCs, but also provides guidance on the improvement of device stability from a dual approach of material and device engineering aspects.

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“…283 Ning et al reported the highest PCE (17.59%) of the LBL-deposited OSCs by developing an insoluble donor, PNTB6-Cl, in CF solvent due to its stronger intermolecular interactions and shorter π–π stacking distance. 284 Although the LBL process makes the vertical phase separation, the LBL-deposited active layer is mixed by the lamination process and returned to an amorphous form. However, the insoluble PNTB6-Cl induced high enhancement while maintaining effective vertical pathways with N3.…”

Section: Fabrication Processes For Industrializationmentioning

confidence: 99%

“…However, the insoluble PNTB6-Cl induced high enhancement while maintaining effective vertical pathways with N3. 284…”

Section: Fabrication Processes For Industrializationmentioning

confidence: 99%

Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

et al. 2022

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Manipulating the solubility properties of polymer donors for high-performance layer-by-layer processed organic solar cells

Abstract: Developing high-performance polymer donors are highly demanded to fulfil the potential of the layer-by-layer (LBL) processed organic solar cells (OSCs). In this study, we present an effective method to develop...

Cited by 66 publications

References 52 publications

Smart Ternary Strategy in Promoting the Performance of Polymer Solar Cells Based on Bulk‐Heterojunction or Layer‐By‐Layer Structure

Smart Ternary Strategy in Promoting the Performance of Polymer Solar Cells Based on Bulk‐Heterojunction or Layer‐By‐Layer Structure

Quasiplanar Heterojunction All‐Polymer Solar Cells: A Dual Approach to Stability

Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

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