Organic polymeric and small molecular electron acceptors for organic solar cells

Materials Science and Engineering R Reports, Journal Year: 2018, Volume and Issue: 124, P. 1 - 57

Published: Feb. 1, 2018

Language: Английский

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Recent development of perylene diimide-based small molecular non-fullerene acceptors in organic solar cells

Chinese Chemical Letters, Journal Year: 2017, Volume and Issue: 28(11), P. 2105 - 2115

Published: Aug. 31, 2017

Language: Английский

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Applying direct heteroarylation synthesis to evaluate organic dyes as the core component in PDI-based molecular materials for fullerene-free organic solar cells

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(23), P. 11623 - 11633

Published: Jan. 1, 2017

A streamlined synthetic approach to easily access complex pi-conjugated molecular materials.

Language: Английский

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Novel Star-Shaped Helical Perylene Diimide Electron Acceptors for Efficient Additive-Free Nonfullerene Organic Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2018, Volume and Issue: 10(33), P. 27894 - 27901

Published: July 27, 2018

Two star-shaped helical perylene diimide (PDI) electron acceptors TPDI2 and FTPDI2 were designed synthesized for nonfullerene organic solar cells (OSCs). The integration of PDIs into a three-dimensional structure provides new strategy to tune the intermolecular interactions, as-cast blend films with PTB7-Th show favorable morphology as well efficient charge transfer separation, evidenced by femtosecond transient absorption (fs-TA) spectroscopy studies. A trade-off between suppressing self-aggregation maintaining charge-transfer properties was achieved FTPDI2. Using donor, FTPDI2-based OSCs high power conversion efficiency 8.28%, without assistance any additives.

Language: Английский

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Perylene-diimide for organic solar cells: current scenario and prospects in molecular geometric, functionalization, and optoelectronic properties

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(48), P. 26393 - 26425

Published: Jan. 1, 2023

This review highlights key features of PDA-NFA: molecular design, diverse grafting sites, advanced synthesis, morphology control, and optimized device performance. provides a vision for high-performance PDA-NFA NF-OSCs.

Language: Английский

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A simple molecular structure of ortho-derived perylene diimide diploid for non-fullerene organic solar cells with efficiency over 8%

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(42), P. 22288 - 22296

Published: Jan. 1, 2017

A simple molecular structure of ortho-derived perylene diimides (PDI) diploid has been developed for non-fullerene organic solar cells (OSCs) with a high power conversion efficiency (PCE) 8.3%, indicating that such concise PCE great potential the practical applications in OSCs.

Language: Английский

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Molecular Engineering for Large Open-Circuit Voltage and Low Energy Loss in Around 10% Non-fullerene Organic Photovoltaics

ACS Energy Letters, Journal Year: 2018, Volume and Issue: 3(4), P. 1028 - 1035

Published: March 27, 2018

Recent efforts in organic photovoltaics (OPVs) have been devoted to obtaining low-bandgap non-fullerene acceptors (NFAs) for high photocurrent generation. However, the low-lying lowest unoccupied molecular orbital (LUMO) level narrow bandgap NFAs typically results a small energy difference (ΔEDA) between LUMO of acceptor and highest occupied (HOMO) donor, leading low open-circuit voltage (VOC). The trade-off ΔEDA generation significantly limits simultaneous enhancement both VOC short-circuit current density (JSC). Here, we report new medium-bandgap NFA, IDTT-T, containing weakly electron-withdrawing N-ethyl thiabarbituric acid terminal group on each end indacenodithienothiophene (IDTT) core. When paired with benchmark PTB7-th polymer absorption spectral coverage was realized. OPV devices yield 1.01 V, corresponding loss 0.57 eV around 10% efficiency single-junction NFA OPVs. design demonstrates working principle concurrently increase PCE bulk fullerene-free heterojunction

Language: Английский

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Borane Incorporation in a Non-Fullerene Acceptor To Tune Steric and Electronic Properties and Improve Organic Solar Cell Performance

ACS Applied Energy Materials, Journal Year: 2019, Volume and Issue: 2(2), P. 1229 - 1240

Published: Jan. 4, 2019

Herein we study the effects of borane incorporation in a perylene diimide (PDI)-based non-fullerene acceptor (NFA). We have previously demonstrated that PDI-bithiophene-PDI ((PDI)2Th2) compound can be synthesized via direct (hetero)arylation techniques and is easily modified to incorporate phosphole bithiophene core ((PDI)2Th2PO) tune electronic geometric properties. In this work, analogue ((PDI)2Th2B) organoboron moiety heavily influences optical, electronic, To determine functionalization on device performance, green solvent solution-processed bulk-heterojunction solar cells were fabricated using medium-gap donor polymer TTFQx-T1 each PDI as NFA, respectively. Devices with new borane-containing provided highest efficiency, more than twice for other compounds, which was attributed highly twisted structure allowing favorable active-layer morphology formed.

Language: Английский

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N-Annulated Perylene Diimide Non-Fullerene Acceptors for Organic Photovoltaics

Colorants, Journal Year: 2023, Volume and Issue: 2(1), P. 151 - 178

Published: March 21, 2023

This work covers the development of non-fullerene acceptors for use in organic photovoltaics built using N-annulated perylene diimide dye. The classic dye has been extensively used to construct acceptors, leading device power conversion efficiencies over 10%. Strong visible light absorption and deep frontier molecular energy levels have made such materials (both polymeric) near ideal pairing with narrow-gap conjugated polymers bulk-heterojunction active layers. N-annulation provides an extra site side-chain engineering alters electronic structure polycyclic aromatic core. In addition, allows selective bromination core, building blocks that are useful construction large frameworks atom-economical direct heteroarylation cross-coupling method. Herein, we detail a series molecules developed by our team based on form dimers different cores electron-rich electron-deficient); varied side chains; tetramers varying geometries; large, asymmetric internal cascades. these as photovoltaic devices (binary ternary blends, outdoor indoor applications, spin-coated vs. slot-die-coated photoactive layers) is presented.

Language: Английский

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A non-fullerene acceptor with a diagnostic morphological handle for streamlined screening of donor materials in organic solar cells

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(32), P. 16907 - 16913

Published: Jan. 1, 2017

Utilizing the N-annulated PDI acceptor PDI–DPP–PDI, a simple air-processed and air-tested organic photovoltaic device fabrication procedure has been established to streamline screening of donor materials.

Language: Английский

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