Wide Bandgap Polymer with Narrow Photon Harvesting in Visible Light Range Enables Efficient Semitransparent Organic Photovoltaics

Advanced Functional Materials, Год журнала: 2021, Номер 31(52)

Опубликована: Сен. 21, 2021

Abstract Wide bandgap polymer D18 with narrow photon harvesting in visible light range and small molecule N3 near‐infrared are adopted for building semitransparent organic photovoltaics (OPVs). To find out the optimal D18:N3 weight ratio OPVs, series of opaque OPVs built a varied ratio. The power conversion efficiency (PCE) fill factor can be maintained over 16% 77% (0.7:1.6, wt/wt) based respectively. average transmittance (AVT) corresponding blend films achieved 50%, demonstrating great potential fabricating efficient OPVs. on fabricated by using 1 nm Au/(10, 15, 20 nm) Ag as cathode. thickness layers is to balance optical properties electrical top electrode. 10 achieve highest utilization 2.90% PCE 12.91% an AVT 22.49%, which should among best performance reported This work demonstrates that wide donor has preparing

Язык: Английский

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Polythiophenes for organic solar cells with efficiency surpassing 17%

Joule, Год журнала: 2022, Номер 6(3), С. 647 - 661

Опубликована: Март 1, 2022

Язык: Английский

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Challenges and recent advances in photodiodes-based organic photodetectors

Materials Today, Год журнала: 2021, Номер 51, С. 475 - 503

Опубликована: Сен. 11, 2021

Язык: Английский

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High‐Efficiency Organic Solar Cells Based on a Low‐Cost Fully Non‐Fused Electron Acceptor

Advanced Functional Materials, Год журнала: 2021, Номер 31(27)

Опубликована: Апрель 22, 2021

Abstract A series of tetrathiophene‐based fully non‐fused ring acceptors (4T‐1, 4T‐2, 4T‐3, and 4T‐4), which can be paired with the star donor polymer PBDB‐T to fabricate highly efficient organic solar cells are developed. Tailoring size lateral chains tune solubility packing mode acceptor molecules in neat blend films. It is found that incorporation 2‐ethylhexyl effectively change compatibility PBDB‐T, an encouraging power conversion efficiency 10.15% accomplished by 4T‐3‐based cells. also presents good other even higher (PCE) 12.04% achieved based on D18:4T‐3 blend, champion PCE for acceptors. Importantly, these inexpensive tetrathiophene provide cost‐effective photovoltaic performance. The results demonstrate a high performance from synthetically materials could rational design molecules.

Язык: Английский

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Flexible Organic Solar Cells: Progress and Challenges

Small Science, Год журнала: 2021, Номер 1(5)

Опубликована: Март 30, 2021

Compared with inorganic photovoltaic technologies, flexibility is the most prominent feature of organic solar cells (OSCs). Flexible OSCs have been considered as one promising directions in OSC field, and drawn tremendous attention recent years. However, power conversion efficiencies (PCEs) flexible still lag behind those their rigid counterparts. To further improve performance OSCs, it great necessity for synergistic efforts to optimize transparent electrodes (FTEs), photoactive materials, electrode buffer layers, device structure engineering. Herein, progress from perspective FTEs, including indium tin oxides, carbon nanomaterials, conducting polymers, silver nanowires, ultrathin metal films meshes, summarized. In addition, materials layers are discussed reveal effects material engineering interface modification. Finally, a discussion future outlook challenges presented.

Язык: Английский

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Fabrication of Ti3C2Tx MXene/polyaniline composite films with adjustable thickness for high-performance flexible all-solid-state symmetric supercapacitors

Electrochimica Acta, Год журнала: 2022, Номер 406, С. 139871 - 139871

Опубликована: Янв. 7, 2022

Язык: Английский

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Harnessing the Structure‐Performance Relationships in Designing Non‐Fused Ring Acceptors for Organic Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(21)

Опубликована: Фев. 17, 2023

Abstract The prerequisite for commercially viable organic solar cells (OSC) is to reduce the efficiency‐stability‐cost gap. Therefore, cost of materials should be reduced by minimizing synthetic steps, yet maintaining molecular planarity and efficiencies achieved fused ring acceptors (FRA). In this respect, developing non‐fused (NFRA) with suitable functionalization favor conformational effective packing beneficial cost‐effective. Presently, power conversion efficiency (PCE) NFRAs around 16 %, lower than 19 % FRAs. Despite their potential, a thorough understanding structural design necessary efficient OSCs. This article pays special attention concept developed in last years analyzed approach toward improvement, an important step technological application.

Язык: Английский

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Recent Progress of Fluorinated Conjugated Polymers

Advanced Materials, Год журнала: 2024, Номер 36(32)

Опубликована: Июнь 3, 2024

Abstract In recent years, conjugated polymers have received widespread attention due to their characteristic advantages of light weight, favorable solution processability, and structural modifiability. Among various polymers, fluorinated ones developed rapidly achieve high‐performance n ‐type or ambipolar polymeric semiconductors. The uniqueness contains the high coplanarity structures, lower frontier molecular orbital energy levels, strong nonbonding interactions. this review, first building blocks, including benzene thiophene rings, B←N bridged units, fluoroalkyl side chains are summarized. Subsequently, different synthetic methods described, with a special focus on respective disadvantages. Then, these numerous structures appropriate bear in mind, properties applications such as cyclopentadithiophene‐, amide‐, imide‐based embedded systematically discussed. introduction fluorine atoms can further enhance electron‐deficiency backbone, influencing charge carrier transport performance. promising applied widely organic field‐effect transistors, solar cells, thermoelectric devices, other opto‐electric devices. Finally, outlook challenges future development is

Язык: Английский

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Control of aggregated structure of photovoltaic polymers for high‐efficiency solar cells

Aggregate, Год журнала: 2021, Номер 2(5)

Опубликована: Май 5, 2021

Abstract π‐Conjugated organic/polymer materials‐based solar cells have attracted tremendous research interest in the fields of chemistry, physics, materials science, and energy science. To date, best‐performance polymer (PSCs) achieved power conversion efficiencies exceeding 18%, mostly driven by molecular design device structure optimization photovoltaic materials. This review article provides a comprehensive overview key advances current status aggregated PSCs. Here, we start providing brief tutorial on polymers. The characteristic parameters at different length scales associated characterization techniques are overviewed. Subsequently, variety effective strategies to control polymers discussed for polymer:fullerene polymer:nonfullerene small molecule cells. Particularly, achieving record each type PSCs highlighted. More importantly, in‐depth structure–performance relationships demonstrated with selected examples. Finally, future challenges prospects understanding optimizing their blends provided.

Язык: Английский

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Low-cost materials for organic solar cells

Journal of Materials Chemistry C, Год журнала: 2021, Номер 9(43), С. 15395 - 15406

Опубликована: Янв. 1, 2021

This review summarizes the recent advances in low-cost materials for OSCs from aspects of synthetic method, active materials, interfacial and processing solution.

Язык: Английский

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