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Using Momentum-resolved Optical Spec...

DeCrescent, Ryan Anthony.

Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors.
Author:	DeCrescent, Ryan Anthony.
Published:	Ann Arbor : ProQuest Dissertations & Theses, 2020
Description:	165 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-04, Section: B.
Notes:	Includes supplementary digital materials.
Notes:	Advisor: Schuller, Jon;Sherwin, Mark.
Contained By:	Dissertations Abstracts International82-04B.
Subject:	Physics.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28094574
ISBN:	9798684682100

Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors.
DeCrescent, Ryan Anthony.

Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 165 p.

Source: Dissertations Abstracts International, Volume: 82-04, Section: B.

Thesis (Ph.D.)--University of California, Santa Barbara, 2020.

This item must not be sold to any third party vendors.

Herein, we describe a momentum-resolved optical reflectometry technique for precisely quantifying absorption anisotropies, with a particular interest in its ability to estimate distinct out-of-plane dipole strengths in solution-processable semiconductors. We demonstrate major advantages over conventional techniques, e.g., variable-angle spectroscopic ellipsometry, and subsequently show how to merge the strengths of the two techniques. We interrogate two distinct material systems: organic semiconductor thin films and two-dimensional (2D) hybrid organic-inorganic perovskites (HOIPs). In organic thin films, we resolve molecular reorientations due to processing conditions. In 2D HOIPs, we adopt a layered effective medium model to show that strong optical anisotropies arise predominantly from classical electromagnetics effects (i.e., dielectric inhomogeneity) rather than anisotropies in the quantum-mechanical matrix elements. Finally, we demonstrate unexpected multipolar light-matter interactions in 2D HOIPs, revealed by a highly polarized and oblique emission sideband. Electromagnetic and quantum-mechanical analyses indicate that this emission originates from an out-of-plane magnetic dipole transition arising from the 2D character of electronic states. The techniques described herein are materials agnostic and may provide insight into fundamental optoelectronic processes and processing-dependent structure-function relationships in a wide variety of interrogated materials.

ISBN: 9798684682100Subjects--Topical Terms:

179414
Physics.
Subjects--Index Terms:

Absorption

Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors.
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245 1 0 $a Using Momentum-resolved Optical Spectroscopies to Quantify Anisotropic and Multipolar Phenomena in Organic and Hybrid Organic-Inorganic Semiconductors.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 165 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-04, Section: B.
500 $a Includes supplementary digital materials.
500 $a Advisor: Schuller, Jon;Sherwin, Mark.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Herein, we describe a momentum-resolved optical reflectometry technique for precisely quantifying absorption anisotropies, with a particular interest in its ability to estimate distinct out-of-plane dipole strengths in solution-processable semiconductors. We demonstrate major advantages over conventional techniques, e.g., variable-angle spectroscopic ellipsometry, and subsequently show how to merge the strengths of the two techniques. We interrogate two distinct material systems: organic semiconductor thin films and two-dimensional (2D) hybrid organic-inorganic perovskites (HOIPs). In organic thin films, we resolve molecular reorientations due to processing conditions. In 2D HOIPs, we adopt a layered effective medium model to show that strong optical anisotropies arise predominantly from classical electromagnetics effects (i.e., dielectric inhomogeneity) rather than anisotropies in the quantum-mechanical matrix elements. Finally, we demonstrate unexpected multipolar light-matter interactions in 2D HOIPs, revealed by a highly polarized and oblique emission sideband. Electromagnetic and quantum-mechanical analyses indicate that this emission originates from an out-of-plane magnetic dipole transition arising from the 2D character of electronic states. The techniques described herein are materials agnostic and may provide insight into fundamental optoelectronic processes and processing-dependent structure-function relationships in a wide variety of interrogated materials.
590 $a School code: 0035.
650 4 $a Physics. $3 179414
650 4 $a Optics. $3 204142
650 4 $a Condensed matter physics. $3 708726
650 4 $a Semiconductors. $3 182134
653 $a Absorption
653 $a Excitons
653 $a Fourier spectroscopy
653 $a Optical anisotropies
653 $a Optical constants
653 $a Solution-processable semiconductors
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690 $a 0611
710 2 $a University of California, Santa Barbara. $b Physics. $3 886675
773 0 $t Dissertations Abstracts International $g 82-04B.
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791 $a Ph.D.
792 $a 2020
793 $a English
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