Harnessing the Structure‐Performance Relationships in Designing Non‐Fused Ring Acceptors for Organic Solar Cells DOI
Amaresh Mishra, Ganesh D. Sharma

Angewandte Chemie, Journal Year: 2023, Volume and Issue: 135(21)

Published: Feb. 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.

Language: Английский

Harnessing the Structure‐Performance Relationships in Designing Non‐Fused Ring Acceptors for Organic Solar Cells DOI
Amaresh Mishra, Ganesh D. Sharma

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(21)

Published: Feb. 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.

Language: Английский

Citations

83
A 4‐Arm Small Molecule Acceptor with High Photovoltaic Performance DOI

Xianyi Meng,

Mingjie Li, Ke Jin

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(38)

Published: July 26, 2022

Manipulating the backbone of small molecule acceptors (SMAs) is particular importance in developing efficient organic solar cells (OSCs). The common design constructing 2-arm SMAs with linear or curved backbones. Herein, we report an acceptor 4A-DFIC a 4-arm unexpectedly generated reaction electron-rich aromatic diamine and hexaketocyclohexane. Single-crystal X-ray diffraction analysis indicates rigid twisted molecular plane effective stacking solid state. shows low band gap 1.40 eV excellent light-harvesting capability from visible to near-infrared region. Binary ternary OSCs based on gave power conversion efficiencies (PCEs) 15.76 % 18.60 (certified 18.1 %), respectively, which are highest PCEs for multi-arm SMA-based date.

Language: Английский

Citations

74
Modification on the Quinoxaline Unit to Achieve High Open-Circuit Voltage and Morphology Optimization for Organic Solar Cells DOI
Zhenyu Chen, Jinfeng Ge,

Yuntong Guo

et al.

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(10), P. 3432 - 3438

Published: Sept. 15, 2022

Core engineering plays a vital role in the construction of efficient non-fullerene acceptors. Here, we synthesized molecule named QX, based on core quinoxaline, and by replacing H atoms with 2-ethylhexyl, 2-(ethylhexyl)thiophene, 2-(2-ethylhexyl)-3-fluorothiophene groups, obtained other three acceptors, QX-EH, QX-TH, QX-THF, respectively. Compared introduction substitution groups ameliorated molecular solubility, their lowest unoccupied orbital levels were elevated. Also, thiophene ring QX-TH QX-THF enhanced miscibility PM6 compared to QX-EH. Furthermore, fluorine atom greatly optimized blend morphology, leading charge transport, less bimolecular recombination, suitable nanophase aggregation devices. Eventually, PM6:QX-THF-based devices exhibited an impressive power conversion efficiency 17.45% fill factor 78.99%. This work reveals that modification quinoxaline is effective tuning morphology open-circuit voltage for high-efficiency organic photovoltaics.

Language: Английский

Citations

43
Organic conjugated small molecules with donor–acceptor structures: design and application in the phototherapy of tumors DOI
Bing Lü, Yuying Huang, Zhecheng Zhang

et al.

Materials Chemistry Frontiers, Journal Year: 2022, Volume and Issue: 6(20), P. 2968 - 2993

Published: Jan. 1, 2022

This review summarizes organic conjugated small-molecule photosensitizers with D–A, D–A–D and A–D–A structures in phototherapy applications, highlighting some effective molecular design strategies proposing future perspectives opportunities.

Language: Английский

Citations

40
Terminal Groups of Nonfullerene Acceptors: Design and Application DOI
Huifeng Yao, Jingwen Wang, Ye Xu

et al.

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 35(3), P. 807 - 821

Published: Jan. 18, 2023

Materials design plays a critical role in improving the power conversion efficiency (PCEs) of organic solar cells (OSCs). Recent advances nonfullerene acceptors (NFAs) have achieved great success and made large contribution to rapid increase PCEs. The current state-of-the-art OSCs PCEs >19%, demonstrating their potential for use practical applications. All high-efficiency NFAs adopt an A–D–A or A–DA′D–A (A = acceptor D donor) structure. Modulating electron push–pull effect using alternating D–A structure has proven be effective molecular method. Specially, NFAs, application terminal groups are significance. In this Perspective, brief introduction is given development representative materials. We highlight electrostatic evaluating electron-withdrawing strength. applications designing wide-, middle-, low-bandgap discussed. Then, outline other functions affecting intermolecular packing, blend morphology, energy loss presented. Furthermore, insights into key issues that should considered when developing new groups, including efficiency, cost, stability,

Language: Английский

Citations

34
Indolocarbazole-based small molecules as guest donors for High-Performance ternary organic photovoltaics DOI

Hsiao Han Chiu,

Bing‐Huang Jiang,

Hong Chi Wang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 469, P. 143938 - 143938

Published: June 5, 2023

Language: Английский

Citations

18
Molecular Cross-Linking Enhances Stability of Non-Fullerene Acceptor Organic Photovoltaics DOI
Sangcheol Yoon, Braulio Reyes-Suárez, Sang T. Pham

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: 10(1), P. 541 - 551

Published: Jan. 1, 2025

Understanding efficiency–durability relationships and related mitigation strategies is an important step toward the commercialization of organic photovoltaics (OPVs). Here, we report that a photoactivated 6-bridged azide cross-linker (6Bx) improves morphological stability by suppressing thermally activated diffusion (Y6) acceptor molecules in PM6:Y6 bulk-heterojunction (BHJ)-based OPVs. Cross-linked (0.05 wt % 6Bx) BHJ OPVs retain 93.4% initial power conversion efficiency upon thermal aging at 85 °C for 1680 h (T80 = 3290 h). Molecular origins enhanced are corroborated optical spectroscopy, surface imaging, 2D solid-state nuclear magnetic resonance (ssNMR), Raman scanning electron diffraction (SED) measurements, analysis thin films. The facile single-step cross-linking strategy conjugation with advanced characterization methods presented study paves way developing durable based on non-fullerene acceptors (NFAs).

Language: Английский

Citations

1
Characterization of Small Molecule-Based Organic Photodetectors for Non-Fullerene Bulk Heterojunction with Strong Response in the Visible Light Region DOI Creative Commons
Richie Estrada,

Johansah Liman,

Budi Harsono

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104009 - 104009

Published: Jan. 1, 2025

Language: Английский

Citations

1
Design and Computational Analysis of Nitrobenzofurazan-Based Non-Fullerene Acceptors for Organic Solar Cells: A DFT and Molecular Dynamics Simulation Study DOI

Balkis Abdelaziz,

Salah Bouazizi, Bouzid Gassoumi

et al.

Synthetic Metals, Journal Year: 2025, Volume and Issue: unknown, P. 117846 - 117846

Published: Feb. 1, 2025

Language: Английский

Citations

1
Self‐assembled monolayers for interface engineering in polymer solar cells DOI Open Access
Jie Hu, Weifei Fu, Xi Yang

et al.

Journal of Polymer Science, Journal Year: 2022, Volume and Issue: 60(15), P. 2175 - 2190

Published: Jan. 31, 2022

Abstract Polymer solar cell (PSC) has been developed vastly in the past decade due to advantages of low cost, lightweight, mechanical flexibility, versatility chemical design and synthesis, semitransparency, solution processing. The performance lifetime PSCs are highly dependent on properties both active materials their interfaces. combination organic chemistry multitude well‐understood ligand–metal interactions allows self‐assembled monolayers (SAMs) molecules direct control over electronic at inorganic–organic Thus, SAMs an attractive pathway reconcile interfaces with tunable interface PSCs. Hence, this review describes application different First, as alternatives traditional transporting reduce barrier indium tin oxide (ITO)/active layer ability tuning work function ITO electrode discussed. Second, modifications metal by electrical contacts layer/active described. Third, tailoring donor/acceptor improve summarized. Finally, perspectives challenges pointed out for developing stable high‐performance applying SAMs.

Language: Английский

Citations

24