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Optimizing Active Layer Morphology of Organic Solar Cells by Constructing Random Copolymers with Simple Third Units.
Xie, Qian; Qiao, Chunyu; Fang, Jie; Xia, Dongdong; Ding, Feng; Wang, Qian; Xu, Guodong; Shan, Siyu; Liao, Xunfan; Chen, Yiwang.
Afiliación
  • Xie Q; Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China.
  • Qiao C; Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China.
  • Fang J; Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China.
  • Xia D; Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China.
  • Ding F; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
  • Wang Q; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
  • Xu G; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
  • Shan S; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
  • Liao X; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
  • Chen Y; Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
Macromol Rapid Commun ; : e2400458, 2024 Jul 29.
Article en En | MEDLINE | ID: mdl-39072838
ABSTRACT
The molecular structure of the polymer PM6 is elaborately modified through random copolymerization by incorporating simple units of either difluoro-substituted thiophene (2FT) or dicyano-substituted thiophene (2CNT). The incorporation of the 2FT unit significantly enhanced the coplanarity of the random copolymers, leading to improved molecular crystallinity, whereas the introduction of the 2CNT unit featured the opposite effect. Thanks to the optimized morphology resembling a fiber-like interpenetrating network structure, the organic solar cells based on PM6-10%2FTIT4F showed higher and more balanced charge mobilities, achieving a power conversion efficiency (PCE) of 12.65%, which is comparable to that of PM6-based devices. For comparison, the 2CN-series random copolymers-based devices exhibited lower PCEs of ˂12%. Interestingly, a superior PCE close to 19.0% is achieved in PM6L8-BOPM6-20%2CN based ternary device due to the significant improvement in open-circuit voltage. This work demonstrates that the crystallinity of donor polymers can be enhanced by introducing simple structural units to strengthen the coplanarity of the backbone, thereby achieving an optimized morphology that promotes favorable charge transport.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromol Rapid Commun Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromol Rapid Commun Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania