Recent advances in n-type and ambipolar organic semiconductors and their multi-functional applications

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(4), P. 1331 - 1381

Published: Jan. 1, 2023

A comprehensive summary and deep insights into the synthesis, characterization multi-functional device applications of n-type ambipolar organic semiconductors are provided in this study.

Language: Английский

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Research Progress of Intramolecular π‐Stacked Small Molecules for Device Applications

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(22)

Published: Oct. 1, 2021

Abstract Organic semiconductors can be designed and constructed in π‐stacked structures instead of the conventional π‐conjugated structures. Through‐space interaction (TSI) occurs optoelectronic materials. Thus, unlike electronic coupling along conjugated chain, functional groups stack closely to facilitate spatial electron communication. Using motifs, chemists materials scientists find new ways for constructing with aggregation‐induced emission (AIE), thermally activated delayed fluorescence (TADF), circularly polarized luminescence (CPL), room‐temperature phosphorescence (RTP), as well enhanced molecular conductance. devices based on molecules have exhibited very promising performance, some them exceeding analogues. Recently, reports various organic grown rapidly, prompting this review. Representative scaffolds newly developed systems could stimulate more attention through‐space charge transfer well‐known through‐bond transfer. Finally, opportunities challenges utilizing improving particular are discussed. The previous achievements upcoming prospects may provide insights into theory, materials, field semiconductors.

Language: Английский

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Oligomeric Acceptor: A “Two‐in‐One” Strategy to Bridge Small Molecules and Polymers for Stable Solar Devices

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(23)

Published: March 21, 2022

Oligomeric acceptors are expected to combine the advantages of both highly developed small molecular and polymeric acceptors. However, organic solar cells (OSCs) based on oligomers lag far behind due their slow development low diversity. Here, three oligomeric were produced through oligomerization molecules. The dimer dBTICγ-EH achieved best power conversion efficiencies (PCEs) 14.48 % in bulk heterojunction devices possessed a T80 (80 initial PCE) lifetime 1020 h under illumination, which better than that More excitingly, it showed PCEs 16.06 quasi-planar (Q-PHJ) is highest value OSCs using date. These results suggest molecules promising strategy achieve with optimized performance between high efficiency durable stability, offer materials bright future commercial applications.

Language: Английский

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Molecular Carbon Imides

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(33), P. 14976 - 14991

Published: July 29, 2022

The creation and development of new forms nanocarbons have fundamentally transformed the scientific landscape in past three decades. As members nanocarbon family with accurate size, shape, edge structure, molecular carbon imides (MCIs) shown unexpected unique properties. Particularly, imide functionalization strategy has endowed these rylene-based carbons fascinating characteristics involving flexible syntheses, tailor-made structures, diverse properties, excellent processability, good stability. This Perspective elaborates design evolution to functional landscapes, illustrative examples are given, including a promising library multi-size multi-dimensional MCIs rigidly conjugated π-architectures, ranging from 1D nanoribbon 2D nanographene cross-dimensional MCIs. Although researchers achieved substantial progress using as components for exploration charge transport, photoelectric conversion, chiral luminescence performances, they far unleashing their full potential. Developing highly efficient regioselective coupling/ring-closure reactions formation multiple C–C bonds annulation electron-deficient aromatic units is crucial. Prediction by theory help machine learning artificial intelligence research along reliable nanotechnology characterization will give an impetus blossom related fields. Future investigations also advance toward─or even focus on─the emerging potential functions, especially fields electronics spin electronics, which expected open avenues.

Language: Английский

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“Spine Surgery” of Perylene Diimides with Covalent B–N Bonds toward Electron-Deficient BN-Embedded Polycyclic Aromatic Hydrocarbons

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(7), P. 3091 - 3098

Published: Feb. 9, 2022

BN-embedded polycyclic aromatic hydrocarbons (PAHs) with unique optoelectronic properties are underdeveloped relative to their carbonaceous counterparts due the lack of suitable and facile synthetic methods. Moreover, dearth electron-deficient PAHs further hinders application in organic electronics. Here we present first synthesis novel perylene diimide derivatives (B2N2-PDIs) featuring n-type B-N covalent bonds. The structures these compounds fully confirmed through detailed characterizations NMR, MS, X-ray crystallography. Further investigation shows that introduction BN units significantly modifies photophysical electronic B2N2-PDIs is understood aid theoretical calculations. Compared parent diimides (PDIs), exhibit deeper highest occupied molecular orbital energy levels, new absorption peaks high-energy region, hypsochromic shift emission maxima, decrement photoluminescent quantum yields. Single-crystal field-effect transistors based on showcase an electron mobility up 0.35 cm2 V-1 s-1, demonstrating potential materials.

Language: Английский

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Oligomerized Fused‐Ring Electron Acceptors for Efficient and Stable Organic Solar Cells

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(46)

Published: July 12, 2023

Abstract Organic solar cells (OSCs) have attracted wide research attention in the past decades. Very recently, oligomerized fused‐ring electron acceptors (OFREAs) emerged as a promising alternative to small‐molecular/polymeric acceptor‐based OSCs due their unique advantages such well‐defined structures, batch reproducibility, good film formation, low diffusion coefficient, and excellent stability. So far, rapid advances been made development of OFREAs consisting directly/rigidly/flexibly linked oligomers fused ones. In this Minireview, we systematically summarized recent progress OFREAs, including structural diversity, synthesis approach, molecular conformation packing, long‐term Finally, conclude with future perspectives on challenges be addressed potential directions. We believe that Minireview will encourage novel for OSC applications.

Language: Английский

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Multilayer stacks of polycyclic aromatic hydrocarbons

Nature Chemistry, Journal Year: 2022, Volume and Issue: 14(4), P. 457 - 462

Published: Feb. 7, 2022

Language: Английский

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Trimerized small-molecule acceptors enable high-performance organic solar cells with high open-circuit voltage and prolonged life-time

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(8), P. 3339 - 3349

Published: Jan. 1, 2023

We report a new trimer acceptor (TYT) composed of three Y-based molecules connected by electron-donating spacers. The TYT enables high-performance and stable organic solar cell (OSC) with t 80% lifetime >8000 h under 1 sun illumination.

Language: Английский

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Recent progress and prospects of dimer and multimer acceptors for efficient and stable polymer solar cells

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(9), P. 4674 - 4706

Published: Jan. 1, 2024

This review summarizes the recent progress, key design principles and prospects of dimer multimer acceptors for developing polymer solar cells (PSCs) with high efficiency long-term stability.

Language: Английский

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Double-Cable Conjugated Polymers with Pendant Rylene Diimides for Single-Component Organic Solar Cells

Accounts of Chemical Research, Journal Year: 2021, Volume and Issue: 54(9), P. 2227 - 2237

Published: April 14, 2021

ConspectusConjugated polymers for application in organic solar cells (OSCs) have been developed from poly(phenylenevinylene) to poly(3-hexylthiophene) and then "donor–acceptor" structures, providing power conversion efficiencies (PCEs) over 18% when blending with the electron acceptor as a two-component photoactive layer. Besides, graft-structural double-cable conjugated that use an donor backbones pendant side units are one kind of polymer, which charge carriers generated single polymer. Therefore, can be used layer single-component OSCs (SCOSCs). The covalently linked enable maintain stable microstructures during long-term operation compared systems, is very important toward large-area applications. However, SCOSCs based on provided PCEs below 3% long period, lagging far behind OSCs. key reason this limited number chemical structures difficulty tune morphology these polymers.In Account, we provide overview about our efforts developing new rylene diimides units, how realize high SCOSC devices. studies start "functionalization–polymerization" method synthesize containing diimide acceptors, so large amounts distinct physical electrochemical properties were obtained. Then, will discuss control nanophase separation crystalline region optimize miscibility amorphous polymers, simultaneously facilitating exciton dissociation transport. With efforts, PCE 8.4% has obtained, representing record SCOSCs. In addition, process stability discussed. We hope account inspire many innovative field push stage.

Language: Английский

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