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TitleRigorous electromagnetic analysis of optical emission of organic light-emitting diodes
LanguageEnglish
File Size13.1 MB
Total Pages256
Table of Contents
                            List of Figures
List of Tables
Abstract
Abbreviations and Notations
1 Introduction
	1.1 Research goals
	1.2 Main optical processes affecting OLED emission
		1.2.1 Radiative optical processes
		1.2.2 Nonradiative optical processes
		1.2.3 Effects on outcoupling efficiency and emission pattern
	1.3 Enhancement of OLED outcoupling efficiency
		1.3.1 Emitter position optimization
		1.3.2 High refractive index substrate
		1.3.3 Index matched half-sphere
		1.3.4 Patterned substrate and embedded scatterers
		1.3.5 Grating assisted coupling
		1.3.6 SPP mode outcoupling
	1.4 Accessing exciton ensemble properties by optical measurements
		1.4.1 Spectral and angular measurements
		1.4.2 External efficiency and lifetime measurements
2 Preliminaries
	2.1 Modal analysis of plane-parallel stratified media configurations
		2.1.1 Formulation
		2.1.2 Transverse field equations
		2.1.3 TE/TM decomposition of the fields
		2.1.4 Modal representation of the fields and sources
		2.1.5 Characteristic (1D) Green's function
		2.1.6 Power relations
	2.2 Asymptotic evaluation of spectral integrals
		2.2.1 Steepest descent path method
		2.2.2 Asymptotic evaluation of 2D Green's function
		2.2.3 Asymptotic evaluation of 3D Green's function
3 Rigorous electromagnetic analysis of optical sources and devices
	3.1 Impact of spectral and spatial exciton distributions on optical emission from thin-film weak-microcavity organic light-emitting diodes
		3.1.1 Introduction
		3.1.2 Theory
		3.1.3 Results
		3.1.4 Conclusion
	3.2 Ray-optical theory of broadband partially coherent emission
		3.2.1 Introduction
		3.2.2 Theory
		3.2.3 Results and Discussion
		3.2.4 Conclusion
		3.2.5 Appendix: Ray analysis of a symmetrical biconvex lens
	3.3 Efficient ray-optical scheme for radiation of incoherent sources in flexible layered formations
		3.3.1 Introduction
		3.3.2 Theory
		3.3.3 Results and Discussion
		3.3.4 Conclusion
	3.4 On the validity of two-dimensional models for radiation of optical sources in stratified media
		3.4.1 Introduction
		3.4.2 Theory
		3.4.3 Results and Discussion
		3.4.4 Conclusion
4 Analytical estimation of electrical properties from optical features
	4.1 Analytical extraction of the recombination zone location in organic light-emitting diodes from emission pattern extrema
	4.2 Analytical estimation of emission zone mean position and width in OLEDs from emission pattern image-source interference fringes
		4.2.1 Introduction
		4.2.2 Theory
		4.2.3 Results and Discussion
		4.2.4 Conclusion
5 Curvature effects on optical emission of flexible OLEDs
	5.1 Curvature effects on optical emission of flexible organic light-emitting diodes
		5.1.1 Introduction
		5.1.2 Theory
		5.1.3 Results and discussion
		5.1.4 Conclusion
6 Conclusion and outlook
	6.1 Future outlook
		6.1.1 Analytical investigation of OLED outcoupling efficiency
		6.1.2 Analytical estimation of dipole orientation distribution in OLEDs from emission pattern features
		6.1.3 Equivalence of 2D and 3D sources for non-planar (e.g., cylindrical) geometries
		6.1.4 Analogy between the configurations of OLEDs and leaky wave antennas
		6.1.5 Enhancement of outcoupling efficiency via partially-random (quasi-periodic) gratings
A Developed software: "Where is my emission zone?"
	A.1 Web applet: Where is my emission zone?
		A.1.1 Model assumptions
		A.1.2 User manual
		A.1.3 Example
	A.2 Matlab bundle: Where is my emission zone?++
		A.2.1 Quick start
		A.2.2 Running the program
		A.2.3 Model assumptions
		A.2.4 Required data
		A.2.5 Data preparation
		A.2.6 Package contents
Bibliography
Bibliography
Hebrew Abstract
                        

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