Synthesis and Application of Dithieno[2,3‐d:2′,3′‐d′]Benzo[1,2‐b:4,5‐b′]‐Dithiophene‐Alt‐Halogenated‐Dithieno[3,2‐a:2′,3′‐c]Phenazine Conjugated Polymers for Organic Solar Cells DOI
Fan Wang, Yanduo Tao,

Husen Xu

et al.

Journal of Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

ABSTRACT Two wide band gap conjugated polymers labeled PDBT‐DTPz‐Cl and PDBT‐DTPz‐F, deriving from 4,8‐di(5‐(2‐butyloctyl)‐4‐chlorothiophen‐2‐yl)dithieno[3,2‐ d ,3′,2′ ‐d ′]benzo[1,2‐ b ;4,5‐ ′]dithiophene 9,10‐dichloro‐2,5‐bis((4‐hexyldecyl)thiophen‐2‐yl)dithieno[3,2‐ a :2′,3′‐ c ]phenazine or 9,10‐difluoro‐2,5‐bis((4‐hexyldecyl)thiophen‐2‐yl)dithieno[3,2‐ ]phenazine, are synthesized by the Palladium‐catalyzed Stille coupling reaction, characterized UV–vis absorption, gel chromatography (GPC) cyclic voltammetry (CV) etc. The exhibit extensive light‐harvesting ability in region of 300–700 nm alongside lowest unoccupied (LUMO) highest occupied molecular orbital (HOMO) energy levels −3.92 −5.59 eV for −3.98 −5.65 PDBT‐DTPz‐F. Besides that, non‐fullerene‐based organic solar cells (NFAs‐OSCs) blends PDBT‐DTPz‐Cl:Y6 PDBT‐DTPz‐F:Y6, which respectively present efficiencies 9.41% 13.16%, were achieved. enhanced performance devices fabricated as compared to those PDBT‐DTPz‐Cl:Y6, is attributed several key factors. These include higher charge mobility blend films, increased probability exciton dissociation, reduced bimolecular, triplet‐assisted recombination, non‐radiative losses. improvements thoroughly discussed corroborated comprehensive suite physical measurements.

Language: Английский

Stability and charge transport analysis of high-performance PM6:Y7 nonfullerene organic solar cells using the metal–insulator–metal model DOI Creative Commons
Liliana Fernanda Hernández-García, L. Reséndiz, Magaly Ramírez‐Como

et al.

Materials for Renewable and Sustainable Energy, Journal Year: 2025, Volume and Issue: 14(1)

Published: March 5, 2025

Abstract Non-fullerene acceptors are promising materials for organic solar cells because of their flexibility and low cost; however, long-term stability remains a critical challenge. In this study, we investigate the degradation mechanisms conventionally structured (ITO/PEDOT: PSS/PM6/Y7/PDINO/Ag) under different environmental conditions: nitrogen preservation, encapsulation, air exposure. Using metal-insulator-metal (MIM) model, simulate current-voltage characteristics extract key parameters to understand physical governing device degradation. The results show that exposure primarily affects anode interface, reducing interfacial dipole energy shifting Fermi-level alignment PEDOT: PSS, which is crucial efficient hole extraction. This process leads deterioration in transport properties over time, significantly affecting performance. contrast, cathodic interface stable, suggesting largely driven by changes layer. These findings provide insights into NFA-based cells. Understanding these effects will aid development strategies enhance efficiency photovoltaic devices operation.

Language: Английский

Citations

0
Synthesis and Application of Dithieno[2,3‐d:2′,3′‐d′]Benzo[1,2‐b:4,5‐b′]‐Dithiophene‐Alt‐Halogenated‐Dithieno[3,2‐a:2′,3′‐c]Phenazine Conjugated Polymers for Organic Solar Cells DOI
Fan Wang, Yanduo Tao,

Husen Xu

et al.

Journal of Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

ABSTRACT Two wide band gap conjugated polymers labeled PDBT‐DTPz‐Cl and PDBT‐DTPz‐F, deriving from 4,8‐di(5‐(2‐butyloctyl)‐4‐chlorothiophen‐2‐yl)dithieno[3,2‐ d ,3′,2′ ‐d ′]benzo[1,2‐ b ;4,5‐ ′]dithiophene 9,10‐dichloro‐2,5‐bis((4‐hexyldecyl)thiophen‐2‐yl)dithieno[3,2‐ a :2′,3′‐ c ]phenazine or 9,10‐difluoro‐2,5‐bis((4‐hexyldecyl)thiophen‐2‐yl)dithieno[3,2‐ ]phenazine, are synthesized by the Palladium‐catalyzed Stille coupling reaction, characterized UV–vis absorption, gel chromatography (GPC) cyclic voltammetry (CV) etc. The exhibit extensive light‐harvesting ability in region of 300–700 nm alongside lowest unoccupied (LUMO) highest occupied molecular orbital (HOMO) energy levels −3.92 −5.59 eV for −3.98 −5.65 PDBT‐DTPz‐F. Besides that, non‐fullerene‐based organic solar cells (NFAs‐OSCs) blends PDBT‐DTPz‐Cl:Y6 PDBT‐DTPz‐F:Y6, which respectively present efficiencies 9.41% 13.16%, were achieved. enhanced performance devices fabricated as compared to those PDBT‐DTPz‐Cl:Y6, is attributed several key factors. These include higher charge mobility blend films, increased probability exciton dissociation, reduced bimolecular, triplet‐assisted recombination, non‐radiative losses. improvements thoroughly discussed corroborated comprehensive suite physical measurements.

Language: Английский

Citations

0