Optimizing Miscibility for Enhanced Photovoltaic Performance of Non-Fused Ring Electron Acceptors through Side-Chain Engineering

Physical Chemistry Chemical Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Side-chain engineering is employed to optimize the miscibility of non-fused ring electron acceptors and donors. The PBDB-T:A1C6-Cl blend film exhibits better finer phase separation, contributing higher device efficiency.

Language: Английский

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Enhancing Efficiency and Stability of Ternary Polymer Solar Cells by Employing Donor Dilution and Layer-by-Layer Fabrication Techniques

Organic Electronics, Journal Year: 2025, Volume and Issue: unknown, P. 107262 - 107262

Published: May 1, 2025

Language: Английский

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Molecular Design and Organic Photovoltaic Applications of Carboxylate‐Functionalized P‐type Polymers

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: May 22, 2024

Abstract The significant progress of p‐type and n‐type active layer materials in the past several years has pushed power conversion efficiency (PCE) organic solar cells (OSCs) toward 19%. Due to relatively low synthesis cost simple method carboxylate‐containing building blocks, including thiophene, thieno[3,2‐b]thiophene, thieno[3,4‐b]thiophene, furan, pyrazine, benzodithiophene, benzothiazole, quinoxaline, etc., are widely used construct photovoltaic polymers. These resulting carboxylate‐bearing polymers present downward energy levels, high absorption coefficient, narrow bandgap, hole mobility, strong aggregation behavior, which have dabbled fabrication mechanically stretchable, semitransparent, indoor, tandem OSCs, produce excellent performance. low‐cost copolymers exhibit a satisfying PCE approaching 17%, random terpolymer systems achieve over This review focuses on polymers, summarizes molecular characteristics, discusses their structure‐performance relationship, offers summary outlook challenges for future development.

Language: Английский

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Regiospecific Incorporation of Fluorine Atoms in Polythiophene Derivatives for Efficient Organic Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(46), P. 63861 - 63870

Published: Nov. 9, 2024

Derivatives of polythiophene (PT) have garnered considerable attention in organic solar cells (OSCs) because their relatively uncomplicated molecular structures and cost-effective synthesis. Herein, we developed two regioisomeric fluorinated PT donors, PEI3T-FITVT PEI3T-FOTVT, to realize efficient OSCs. PEI3T-FOTVT are strategically designed with different fluorine atom arrangements on thiophene-vinyl-thiophene (TVT) units. Notably, possesses enhanced backbone planarity induced by F···S noncovalent interactions between constituent building blocks. Consequently, the higher aggregation crystalline properties leads a 2.5-fold increase hole mobility over (from 1.4 × 10–4 3.6 cm2 V–1 s–1). Furthermore, exhibits domain purity than PEI3T-FITVT, leading faster charge transport reduced recombination OSC devices. These characteristics lead power conversion efficiency 14.4% for PEI3T-FOTVT-based OSCs, compared 12.9% PEI3T-FITVT-based

Language: Английский

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Prolonging charge carrier lifetime via reinforcing molecular stacking for high-efficiency organic solar cells

Journal of Central South University, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Language: Английский

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