Star-shaped electron acceptors containing a truxene core for non-fullerene solar cells

Lin, Kaiwen; Xie, Boming; Wang, Zhenfeng; Xie, Ruihao; Huang, Yunping; Duan, Chunhui; Huang, Fei; Cao, Yong

doi:10.1016/j.orgel.2017.10.009

Cited by 51 publications

(40 citation statements)

References 47 publications

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“…To realize multidimensional electron transport, a few star‐shaped FREAs were synthesized, but exhibited low to medium photovoltaic performance with the highest efficiency around 10%. [ 44–47 ]…”

Section: Figurementioning

confidence: 99%

High‐Performance Fluorinated Fused‐Ring Electron Acceptor with 3D Stacking and Exciton/Charge Transport

et al. 2020

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A new fluorinated electron acceptor (FINIC) based on 6,6,12,12‐tetrakis(3‐fluoro‐4‐hexylphenyl)‐indacenobis(dithieno[3,2‐b;2′,3′‐d]thiophene) as the electron‐donating central core and 5,6‐difluoro‐3‐(1,1‐dicyanomethylene)‐1‐indanone as the electron‐deficient end groups is rationally designed and synthesized. FINIC shows similar absorption profile in dilute solution to the nonfluorinated analogue INIC. However, compared with INIC, FINIC film shows red‐shifted absorption, down‐shifted frontier molecular orbital energy levels, enhanced crystallinity, and more ordered molecular packing. Single‐crystal structure data show that FINIC molecules pack into closer 3D “network” motif through H‐bonding and π–π interaction, while INIC molecules pack into incompact “honeycomb” motif through only π–π stacking. Theoretical calculations reveal that FINIC has stronger electronic coupling and more molecular interactions than INIC. FINIC has higher electron mobilities in both horizontal and vertical directions than INIC. Moreover, FINIC and INIC support efficient 3D exciton transport. PBD‐SF/FINIC blend has a larger driving force for exciton splitting, more efficient charge transfer and photoinduced charge generation. Finally, the organic solar cells based on PBD‐SF/FINIC blend yield power conversion efficiency of 14.0%, far exceeding that of the PBD‐SF/INIC‐based devices (5.1%).

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Section: Figurementioning

confidence: 99%

High‐Performance Fluorinated Fused‐Ring Electron Acceptor with 3D Stacking and Exciton/Charge Transport

et al. 2020

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“…36 Some of these compounds were designed to study their promising photovoltaic application in organic solar cells OSCs. [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] The present review casts light on the main strategies for the synthesis of star-shaped molecules especially those containing heterocyclic core and/or heterocyclic arms. The star-shaped molecules mentioned in this review are classied according to the central core as well as the type of side arms.…”

Section: Introductionmentioning

confidence: 99%

An overview on synthetic strategies for the construction of star-shaped molecules

et al. 2019

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“…Therefore, when blended with the same donor PTB7-Th, meta-TrBRCNbased OSCs delivered a higher PCE compared with the para-TrBRCN-based devices (10.15% vs. 8.28%). By contrast, Lin et al [104] also reported an RD-based analogue Tr(Hex)6-3BR (Scheme 6, Table 5), which, however, only showed a PCE of 2.10%, attributed to low electron mobility, serious charge recombination and unfavorable BHJ film morphology. Soon after, Tang et al [105] further introduced meta-TrBRCN as the second acceptor to fabricate the PDTF-TZNT:IT-M:meta-TrBRCN ternary OSCs.…”

Section: Scheme 6 Chemical Structures Of A-d-a-type 3d Rd-based Nfasmentioning

confidence: 97%

Rhodanine-based nonfullerene acceptors for organic solar cells

Liu¹,

Li²,

Zhao

2019

Sci. China Mater.

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Significant progress on the development of nonfullerene acceptors (NFAs) for organic solar cells (OSCs) has been made in the past several years, and the power conversion efficiency (PCE) exceeding 17% has been already realized based on a tandem non-fullerene device. To date, NFAs with a linearly fused acceptor-donor-acceptor (A-D-A) structure are of great interest, due to their attracting synthetic flexibility and high photovoltaic performance. Rhodanine is one of the most studied electron-withdrawing moieties to construct such AD A type NFAs, and the resulting single-junction OSCs have produced PCEs of~10%. More interestingly, those rhodanine-based NFAs have demonstrated a particularly excellent compatibility with well-known P3HT donor, enabling respectable PCEs over 7%. Thus in this review, we summarize the important advances on rhodanine-based NFAs with a main focus on discussing the molecular design strategies, providing a better understanding of the structure-property relationship for those rhodanine-based NFAs.

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Star-shaped electron acceptors containing a truxene core for non-fullerene solar cells

Cited by 51 publications

References 47 publications

High‐Performance Fluorinated Fused‐Ring Electron Acceptor with 3D Stacking and Exciton/Charge Transport

High‐Performance Fluorinated Fused‐Ring Electron Acceptor with 3D Stacking and Exciton/Charge Transport

An overview on synthetic strategies for the construction of star-shaped molecules

Rhodanine-based nonfullerene acceptors for organic solar cells

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