Lane, P.
, Cunningham, P.
, Melinger, J.
, Kushto, J.
, Esenturk, O.
and Heilweil, E.
(2012),
Photoexcitation Dynamics in Nanolayered C60-Zinc Phthalocyanine Films, Physical Review Letters (Accessed April 27, 2026)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Photoexcitation Dynamics in Nanolayered C60-Zinc Phthalocyanine Films
Published
Author(s)
, Paul D. Cunningham, Joseph S. Melinger, J. P. Kushto, ,
Abstract
We elucidate charge transfer and photoexcitation dynamics in C60 and zinc phthalocyanine (ZnPc) by transient and continuous wave spectroscopies. We identify an intermolecular charge transfer state of C¬60 by transient absorption and time-resolved THz and show that carrier cooling occurs over tens of picoseconds. We calculate singlet diffusion rates in C60 by modeling the delayed rise in ground state bleaching of ZnPc absorption following C60 excitation. Recombi¬nation dynamics transform from bimolecular to monomolecular as the layer thickness is reduced, revealing a metastable exciplex at the C60/ZnPc interface with a lifetime of 150 s. Nanolayered films have superior carrier photogeneration and mobility compared to co-deposited blends.Citation
Physical Review Letters
Volume
108
Pub Type
Journals
Keywords
carrier dynamics, interfacial charge transfer, nanolayers, photoabsorption, terahertz
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact [email protected].
Created February 16, 2012, Updated October 12, 2021