PEDOT:PSS‐Free Polymer Non‐Fullerene Polymer Solar Cells with Efficiency up to 18.60% Employing a Binary‐Solvent‐Chlorinated ITO Anode

Sun, Rui; Wang, Tao; Wu, Yao; Zhang, Meng; Ma, Yunlong; Xiao, Zuo; Lu, Guanghao; Ding, Liming; Zheng, Qingdong; Brabec, Christoph J.; Li, Yongfang; Min, Jie

doi:10.1002/adfm.202106846

Cited by 48 publications

(31 citation statements)

References 56 publications

(86 reference statements)

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“…23) and N3, 24 have elevated the rapid development of OPVs to a higher level. Recently, many excellent studies on polymer based OPVs were reported with a PCE over 17.5%, [25][26][27][28][29][30] and an exciting value of 19% has been achieved by Hou's group. 31 Very recently, Hou's group reported a PCE of 17% in SMPVs enabled by nanoscale phase separation with a hierarchical branched structure.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in all-small-molecule organic photovoltaics

Zhao

Yang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Recent progress in all-small-molecule organic photovoltaics

Zhao

Yang

et al. 2022

J. Mater. Chem. A

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“…Mostly recently, Min et al reported simple and effective methodology to improve the performance of HTL-free OSCs (Figure 15). [95] They treated the ITO glass with ODCB:H 2 O 2 cosolvent under UV irradiation, which resulted in obtaining highperformance ITO-Cl anodes. The surface chlorination treatments increased the WF of ITO electrode without reducing the conductivity.…”

Section: Inorganic Hole Transporting Layersmentioning

confidence: 99%

Section: Conclusion and Perspectivementioning

confidence: 99%

Hole/Electron Transporting Materials for Nonfullerene Organic Solar Cells

Peng

2022

Chemistry A European J

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Nonfullerene acceptor based organic solar cells (NF‐OSCs) have witnessed rapid progress over the past few years owing to the intensive research efforts on novel electron donor and nonfullerene acceptor (NFA) materials, interfacial engineering, and device processing techniques. Interfacial layers including electron transporting layers (ETL) and hole transporting layers (HTLs) are crucially important in the OSCs for facilitating electron and hole extraction from the photoactive blend to the respective electrodes. In this review, the lates progress in both ETLs and HTLs for the currently prevailing NF‐OSCs are discussed, in which the ETLs are summarized from the categories of metal oxides, metal chelates, non‐conjugated electrolytes and conjugated electrolytes, and the HTLs are summarized from the categories of inorganic and organic materials. In addition, some bifunctional interlayer materials served as both ETLs and HTLs are also introduced. Finally, the prospects of ETL/HTL materials for NF‐OSCs are provided.

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“…[1,2] Over the past decades, the utmost endeavors have been devoted to modulating the structural and optoelectronic properties by designing new organic semiconductors, [3][4][5] controlling the morphology of photoactive layer via additives and various post-treatments, [6][7][8] maximizing the harvest of light by using ternary or tandem devices, [9][10][11][12][13][14][15][16][17] improving the extraction of electrons and holes by interfacial modification. [18][19][20] With these efforts, PSCs have witnessed rapid progress, the cutting-edge PSCs have delivered over 18% power conversion efficiencies (PCEs) (Table S1, Supporting Information), [7,8,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] and there still has much space to further improvement. As is well-known, simultaneously improving the open-circuit voltage (V oc ), short-circuit current density (J sc ), and fill factor (FF) is essential to maximize the PCE of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination

et al. 2022

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Improving charge extraction and suppressing charge recombination are critically important to minimize the loss of absorbed photons and improve the device performance of polymer solar cells (PSCs). In this work, highly efficient PSCs are demonstrated by progressively improving the charge extraction and suppressing the charge recombination through the combination of side‐chain engineering of new nonfullerene acceptors (NFAs), adopting ternary blends, and introducing volatilizable solid additives. The 2D side chains on BTP‐Th induce a certain steric hindrance for molecular packing and phase separation, which is mitigated by fluorination of side chains on BTP‐FTh. Moreover, by introducing two highly crystalline molecules as the second acceptor and volatilizable solid additive, respectively, into the BTP‐FTh‐based host blend, the molecular crystallinity is significantly improved and the blend morphology is finely optimized. As expected, enhanced charge extraction and suppressed charge recombination are progressively realized, contributing to the largely improved fill factor (FF) of the resultant devices. Accompanied by the enhanced open‐circuit voltage (Voc) and short‐circuit current density (Jsc), a record high power conversion efficiency (PCE) of 19.05% is realized finally.

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PEDOT:PSS‐Free Polymer Non‐Fullerene Polymer Solar Cells with Efficiency up to 18.60% Employing a Binary‐Solvent‐Chlorinated ITO Anode

Cited by 48 publications

References 56 publications

Recent progress in all-small-molecule organic photovoltaics

Recent progress in all-small-molecule organic photovoltaics

Hole/Electron Transporting Materials for Nonfullerene Organic Solar Cells

Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination

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