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On exciton-vibration and exciton-pho...

Alvertis, Antonios M.

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On exciton-vibration and exciton-photon interactions in organic semiconductors

Record Type:	Electronic resources : Monograph/item
Title/Author:	On exciton-vibration and exciton-photon interactions in organic semiconductors/ by Antonios M. Alvertis.
Author:	Alvertis, Antonios M.
Published:	Cham :Springer International Publishing : : 2021.,
Description:	xix, 202 p. :ill. (chiefly col.), digital ;24 cm.
[NT 15003449]:	Introduction -- Organic Semiconductors and Their Properties -- The Time-Dependent Quantum Mechanical Problem -- Modelling of the Electronic and Vibrational Structure -- First Principles Modelling of Exciton-photon Interactions.
Contained By:	Springer Nature eBook
Subject:	Organic semiconductors. -
Online resource:	https://doi.org/10.1007/978-3-030-85454-6
ISBN:	9783030854546

On exciton-vibration and exciton-photon interactions in organic semiconductors
Alvertis, Antonios M.

On exciton-vibration and exciton-photon interactions in organic semiconductors[electronic resource] /by Antonios M. Alvertis. - Cham :Springer International Publishing :2021. - xix, 202 p. :ill. (chiefly col.), digital ;24 cm. - Springer theses,2190-5061. - Springer theses..

Introduction -- Organic Semiconductors and Their Properties -- The Time-Dependent Quantum Mechanical Problem -- Modelling of the Electronic and Vibrational Structure -- First Principles Modelling of Exciton-photon Interactions.

What are the physical mechanisms that underlie the efficient generation and transfer of energy at the nanoscale? Nature seems to know the answer to this question, having optimised the process of photosynthesis in plants over millions of years of evolution. It is conceivable that humans could mimic this process using synthetic materials, and organic semiconductors have attracted a lot of attention in this respect. Once an organic semiconductor absorbs light, bound pairs of electrons with positively charged holes, termed 'excitons', are formed. Excitons behave as fundamental energy carriers, hence understanding the physics behind their efficient generation and transfer is critical to realising the potential of organic semiconductors for light-harvesting and other applications, such as LEDs and transistors. However, this problem is extremely challenging since excitons can interact very strongly with photons. Moreover, simultaneously with the exciton motion, organic molecules can vibrate in hundreds of possible ways, having a very strong effect on energy transfer. The description of these complex phenomena is often beyond the reach of standard quantum mechanical methods which rely on the assumption of weak interactions between excitons, photons and vibrations. In this thesis, Antonios Alvertis addresses this problem through the development and application of a variety of different theoretical methods to the description of these strong interactions, providing pedagogical explanations of the underlying physics. A comprehensive introduction to organic semiconductors is followed by a review of the background theory that is employed to approach the relevant research questions, and the theoretical results are presented in close connection with experiment, yielding valuable insights for experimentalists and theoreticians alike.

ISBN: 9783030854546

Standard No.: 10.1007/978-3-030-85454-6doiSubjects--Topical Terms:

774360
Organic semiconductors.

LC Class. No.: QC611.8.O7 / A48 2021

Dewey Class. No.: 537.6226

On exciton-vibration and exciton-photon interactions in organic semiconductors
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300 $a xix, 202 p. : $b ill. (chiefly col.), digital ; $c 24 cm.
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505 0 $a Introduction -- Organic Semiconductors and Their Properties -- The Time-Dependent Quantum Mechanical Problem -- Modelling of the Electronic and Vibrational Structure -- First Principles Modelling of Exciton-photon Interactions.
520 $a What are the physical mechanisms that underlie the efficient generation and transfer of energy at the nanoscale? Nature seems to know the answer to this question, having optimised the process of photosynthesis in plants over millions of years of evolution. It is conceivable that humans could mimic this process using synthetic materials, and organic semiconductors have attracted a lot of attention in this respect. Once an organic semiconductor absorbs light, bound pairs of electrons with positively charged holes, termed 'excitons', are formed. Excitons behave as fundamental energy carriers, hence understanding the physics behind their efficient generation and transfer is critical to realising the potential of organic semiconductors for light-harvesting and other applications, such as LEDs and transistors. However, this problem is extremely challenging since excitons can interact very strongly with photons. Moreover, simultaneously with the exciton motion, organic molecules can vibrate in hundreds of possible ways, having a very strong effect on energy transfer. The description of these complex phenomena is often beyond the reach of standard quantum mechanical methods which rely on the assumption of weak interactions between excitons, photons and vibrations. In this thesis, Antonios Alvertis addresses this problem through the development and application of a variety of different theoretical methods to the description of these strong interactions, providing pedagogical explanations of the underlying physics. A comprehensive introduction to organic semiconductors is followed by a review of the background theory that is employed to approach the relevant research questions, and the theoretical results are presented in close connection with experiment, yielding valuable insights for experimentalists and theoreticians alike.
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