Fluctuations and exciton
dynamics in molecular
semiconductors
An der Fakultät II - Mathematik und Natur-
wissenschaften der TU Berlin eingereichte Dissertation
Berlin 2024
Fluctuations and exciton
dynamics in molecular
semiconductors
by Alexander Dietrich Neef
by Alexander Dietrich Neef
An der Fakultät II - Mathematik und Natur-
wissenschaften der TU Berlin eingereichte Dissertation
Berlin 2024
The cover shows an artist’s impression of the transition from the singlet to the bitriplet
exciton in a pentacene crystal. ©TU Berlin (Artist: Jo Jung-woong of CUBE 3D graphic)
This work was carried out between November 2018 and December 2023 at the Department
of Physical Chemistry (headed by Martin Wolf) of the Fritz Haber Institute of the Max
Planck Society located in Berlin Dahlem. It was supervised by Ralph Ernstorfer, head of
the Structural and Electronic Surface Dynamics group at the institute.
Fluctuations and exciton dynamics in molecular semiconductors ©2024 by Alexander
Dietrich Neef is licensed under CC BY 4.0. To view a copy of this license, visit
http://creativecommons.org/licenses/by/4.0/
Based on a L
A
T
E
Accepted version, March 2024
Fluctuations and exciton dynamics
in molecular semiconductors
vorgelegt von
M. Sc.
Alexander Dietrich Neef
ORCID: 0000-0002-2375-5970
an der Fakultät II – Mathematik und Naturwissenschaften
der Technischen Universität Berlin
zur Erlangung des akademischen Grades
Vorsitzender: Prof. Dr. Andreas Knorr
Gutachter: Prof. Dr. Ralph Ernstorfer
Gutachter: Prof. Dr. Kirill Bolotin
Tag der wissenschaftlichen Aussprache: 26. Februar 2024
Doktor der Naturwissenschaften
- Dr. rer. nat. -
genehmigte Dissertation
Promotionsausschuss:
Berlin 2024
Declaration of authorship
I, M. Sc. Alexander Dietrich Neef, declare to the Technical University Berlin that I have
completed the submitted dissertation independently and without the use of sources and aids
other than those indicated. The present thesis is free of plagiarism. I have marked as such all
statements that are taken literally or in content from other writings. This dissertation has not
been submitted in the same or similar form in any previous doctoral procedure.
I agree to have my thesis examined by a plagiarism examination software.
Signature:
Date:
Ask courageous questions. Do not be
satisfied with superficial answers. Be
open to wonder and at the same time
subject all claims to knowledge,
without exception, to intense skeptical
scrutiny. Be aware of human fallibility.
Cherish your species and your planet.
Carl Sagan
To my friends.
To my mum for unconditional love.
And to my dad, who would have been proud.
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