Noncovalently Fused-Ring Electron Acceptors with C2v Symmetry for Regulating the Morphology of Organic Solar Cells

Hou, Ran; Li, Miao; Ma, Xueqing; Huang, Hao; Lü, Hao; Jia, Qingqing; Liu, Yahui; Xu, Xinjun; Li, Hai‐Bei; Bo, Zhishan

doi:10.1021/acsami.0c13993

Cited by 51 publications

(45 citation statements)

References 59 publications

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“…DO‐2F and IDTT‐OB were prepared according to our previous work. [ 22,44,45 ] The UV–vis absorption spectra of PBDB‐T, IDTT‐OB, and DO‐2F in dilute o ‐DCB solutions and as thin films are shown in Figure S3, Supporting Information and Figure 1c. The pristine films of PBDB‐T, IDTT‐OB, and DO‐2F show broad absorptions in the range of 500–700, 500–800, and 500–910 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Previously, we have found that DO‐2F displays a strong crystalline and tends to form a large phase separation when blending with PBDB‐T. [ 22,44 ] However, asymmetric acceptor IDTT‐OB exhibits a good miscibility with PBDB‐T and forms homogenous blend film morphology. [ 45 ] Thus, we hope the introduction of IDTT‐OB as the third component can increase the compatibility of the ternary system, reduce the crystallinity of DO‐2F, and optimize the blend film morphology.…”

Section: Introductionmentioning

confidence: 99%

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Ternary Strategy Enabling High‐Performance Organic Solar Cells with Optimized Film Morphology and Reduced Nonradiative Energy Loss

Zhou

Zhang

et al. 2021

Solar RRL

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Ternary strategy has been demonstrated to be an effective way to improve power conversion efficiency (PCE) of single‐junction organic solar cells (OSCs). Herein, high‐efficiency ternary OSCs are fabricated based on the PBDB‐T:DO‐2F binary system and acceptor IDTT‐OB with asymmetric side chains as the third component. The introduction of nonfullerene acceptors (NFAs) IDTT‐OB as a third component can efficiently increase the compatibility of the ternary system, reduce the crystallinity of DO‐2F, optimize the blend film morphology, improve the charge transport and collection, suppress the bimolecular recombination, and reduce the nonradiative energy loss (ΔEnonrad). Finally, the PBDB‐T:DO‐2F:IDTT‐OB‐based ternary device exhibits a high PCE of 14.09% with Voc of 0.87 V, Jsc of 21.47 mA cm−2, and fill factor of 75.70%, which is about 30% higher than the corresponding PBDB‐T:DO‐2F‐ and PBDB‐T:IDTT‐OB‐based binary devices. Meanwhile, the ternary device also achieves a very low ΔEnonrad of 0.22 eV. This work indicates that the ternary strategy can effectively optimize morphology of active layer, reduce nonradiative energy loss, and further improve photovoltaic performance of OSCs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ternary Strategy Enabling High‐Performance Organic Solar Cells with Optimized Film Morphology and Reduced Nonradiative Energy Loss

Zhou

Zhang

et al. 2021

Solar RRL

Self Cite

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“…同年, Bo 课题组 [59] [62] 同年 Grätzel 课题组 [65] 通过分子工程策略, 引入 CPDT, 合成了分子 Y123(图 7). 其光谱响应扩展到了红外区域, 增强了吸收太阳光的能力.…”

Section: Cpdt 衍生物的物理化学性质和光电性质unclassified

Synthesis and Application of Cyclopentadithiophene Derivatives

Hu¹,

Zhong²,

Li³

et al. 2021

Acta Chimica Sinica

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Cyclopentadithiophene (CPDT) derivatives, as a class of fluorene-like molecular building blocks that have a wide range of applications in the design of organic optoelectronic materials due to their easily molecular tailoring, electron-rich, low band gap, high electrical conductivity and good charge transport properties in the field of plastic electronics. At the same time, cyclopentadithiophene is easy to carry out structural modification, which can introduce various functional groups conveniently and quickly, and can expand a variety of derivatives. Cyclopentadithiophene can be divided into six structural isomers based on the position of the S atom on thiophene. Among these structural isomers, there are many reports on 4H-cyclopenta[2,1-b:3,4-b']dithiophene derivatives. In this article, we review mainly the synthesis and properties of 4H-cyclopenta[2,1-b:3,4-b']dithiophene derivatives and applications in organic solar cells (OSCs), organic field-effect transistors (OFETs). The research progress in organic light-emitting diodes (OLEDs) and other fields is also comprehensively summarized. The perspectives of the gridochemistry of CPDT-based organic semiconductors will be made finally.

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“…This result is consistent with the reported phenomenon that acceptors with C2v symmetry provide improved solubilities. [12]…”

Section: Synthesismentioning

confidence: 99%

“…[6,7] Several C2v-symmetric (arch-shaped) NFAs, such as ZY-4Cl [8] and Y6 [9], have reportedly shown photovoltaic characteristics due to their high carrier mobilities and crystallinities, as well as the optimal phase separations of their blend films. [10][11][12] However, investigations into the influence of structural symmetry on acceptor performance are limited.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Properties, and Photovoltaic Characteristics of Arch- and S-shaped Naphthobisthiadiazole-based Acceptors

Jinnai

2021

J. Photopol. Sci. Technol.

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Noncovalently Fused-Ring Electron Acceptors with C_2v Symmetry for Regulating the Morphology of Organic Solar Cells

Cited by 51 publications

References 59 publications

Ternary Strategy Enabling High‐Performance Organic Solar Cells with Optimized Film Morphology and Reduced Nonradiative Energy Loss

Ternary Strategy Enabling High‐Performance Organic Solar Cells with Optimized Film Morphology and Reduced Nonradiative Energy Loss

Synthesis and Application of Cyclopentadithiophene Derivatives

Synthesis, Properties, and Photovoltaic Characteristics of Arch- and S-shaped Naphthobisthiadiazole-based Acceptors

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