Driving Force and Optical Signatures of Bipolaron Formation in Chemically Doped Conjugated Polymers

Molecular dopants are often added to semiconducting polymers to improve electrical conductivity. However, the use of such dopants does not always produce mobile charge carriers. In this work, ultrafast spectroscopy is used to explore the nature of the carriers created following doping of conjugated...

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Veröffentlicht in:	Advanced materials (Weinheim) 2021-01, Vol.33 (3), p.e2000228-n/a
Hauptverfasser:	Voss, Matthew G., Challa, J. Reddy, Scholes, D. Tyler, Yee, Patrick Y., Wu, Eric C., Liu, Xiao, Park, Sanghyun J., León Ruiz, Omar, Subramaniyan, Selvam, Chen, Mengdan, Jenekhe, Samson A., Wang, Xiaolin, Tolbert, Sarah H., Schwartz, Benjamin J.
Format:	Artikel
Sprache:	eng
Schlagworte:	bipolarons Carrier density Charge density Charge materials Current carriers Density functional theory donor–acceptor copolymers Dopants Doping Electrical resistivity Excitation spectra Ferric chloride Iron chlorides Materials science molecular dopants Polarons Polymers semiconducting polymers Spectrum analysis Tetracyanoquinodimethane transient absorption spectroscopy
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