Annealing-free high-mobility diketopyrrolopyrrole-quaterthiophene copolymer for solution-processed organic thin film transistors


Autoria(s): Li, Y.; Sonar, P.; Singh, S. P.; Soh, M. S.; Van Meurs, M.; Tan, J.
Data(s)

27/01/2011

Resumo

A donor-acceptor polymer semiconductor, PDQT, comprising diketopyrrolopyrrole (DPP) and β-unsubstituted quaterthiophene (QT) for organic thin film transistors (OTFTs) is reported. This polymer forms ordered layer-by-layer lamellar packing with an edge-on orientation in thin films even without thermal annealing. The strong intermolecular interactions arising from the fused aromatic DPP moiety and the DPP-QT donor-acceptor interaction facilitate the spontaneous self-assembly of the polymer chains into close proximity and form a large π-π overlap, which are favorable for intermolecular charge hopping. The well-interconnected crystalline grains form efficient intergranular charge transport pathways. The desirable chemical, electronic, and morphological structures of PDQT bring about high hole mobility of up to 0.97 cm2/(V·s) in OTFTs with polymer thin films annealed at a mild temperature of 100 °C and similarly high mobility of 0.89 cm2/(V·s) for polymer thin films even without thermal annealing.

Identificador

http://eprints.qut.edu.au/75226/

Publicador

American Chemical Society

Relação

http://pubs.acs.org/doi/abs/10.1021/ja1085996

DOI:10.1021/ja1085996

Li, Y., Sonar, P., Singh, S. P., Soh, M. S., Van Meurs, M., & Tan, J. (2011) Annealing-free high-mobility diketopyrrolopyrrole-quaterthiophene copolymer for solution-processed organic thin film transistors. Journal of the American Chemical Society, 133(7), pp. 2198-2204.

Direitos

© 2011 American Chemical Society.

Fonte

School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty

Palavras-Chave #Charge hopping #Charge transport #Close proximity #Crystalline grains #Diketopyrrolopyrroles #Donor-acceptor interaction #Donor-acceptor polymers #High mobility #Intergranular #Intermolecular interactions #Lamellar packing #Mild temperatures #Morphological structures #Ordered layer #Organic thin film transistors #Polymer chains #Polymer thin films #Quaterthiophene #Solution-processed #Thermal-annealing #Annealing #Hole mobility #Plastic films #Polymer films #Polymeric films #Polymers #Thin films #Thin film transistors #copolymer #crystallin #diketopyrrolopyrrole #polymer #pyrrole derivative #thiophene derivative #unclassified drug #article #chemical structure #electron #film #molecular interaction #semiconductor #synthesis #temperature
Tipo

Journal Article