Edge-to-face stacking non-fullerene small molecule acceptor for bulk heterojunction solar cells

Synthesis of a novel small molecule accepter with perylenediimide linked through thiophene ring with triphenylamine is described. Introducing thiophene unit leads to extending the molecular absorption spectrum to the range of 330 nm–700 nm. The molecule showed the lowest unoccupied molecular orbital...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Dyes and pigments 2016-09, Vol.132, p.41-47
Hauptverfasser: Wu, Qichao, Li, Ling, Hai, Jiefeng, Zhang, Xin, Lu, Zhenhuan, Yang, Jianwen, Liu, Yongping, Zhang, Lingzhi, Zhan, Chuanlang
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Synthesis of a novel small molecule accepter with perylenediimide linked through thiophene ring with triphenylamine is described. Introducing thiophene unit leads to extending the molecular absorption spectrum to the range of 330 nm–700 nm. The molecule showed the lowest unoccupied molecular orbital level (LUMO) of −3.80 eV and the highest occupied molecular orbital level (HOMO) of −5.60 eV. The X-ray Diffraction (XRD) spectra confirmed that the molecule self-assemble in the solid phase by edge-to-face aromatic interaction, and the addition of 1, 8-diiodooctane in the solvent can adjust its stacking, and thus improve the crystallinity and electron mobility. Solution-processed bulk-heterojunction organic solar cells constructed using the small molecule as acceptor and the polymer of PBDTTT-C-T as donor showed the best efficiency of 1.92%. [Display omitted] •Small molecule based on perylenediimide, thiophene and triphenylamine was synthesized.•The molecule self-assemble in the solid phase by edge-to-face aromatic interaction.•1, 8-diiodooctane could adjust the edge-to-face aromatic interaction of the molecule.•Non-fullerene solar cells based on the molecule exhibited 1.92% efficiency.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2016.04.040