Influence of molecular orientation in organic light-emitting diodes:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
2015
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | iv, 158 Seiten Illustrationen, Diagramme |
Internformat
MARC
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| 100 | 1 | |a Mayr, Christian Eduard |d 1983- |e Verfasser |0 (DE-588)107832252X |4 aut | |
| 245 | 1 | 0 | |a Influence of molecular orientation in organic light-emitting diodes |c vorgelegt von Christian Eduard Mayr |
| 264 | 1 | |c 2015 | |
| 300 | |a iv, 158 Seiten |b Illustrationen, Diagramme | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |b Dissertation |c Universität Augsburg, Mathematisch-Naturwissenschaftlich-Technische Fakultät |d 2015 | ||
| 650 | 0 | 7 | |a Orientiertes Molekül |0 (DE-588)4272902-6 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a OLED |0 (DE-588)4762455-3 |2 gnd |9 rswk-swf |
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 689 | 0 | 0 | |a OLED |0 (DE-588)4762455-3 |D s |
| 689 | 0 | 1 | |a Orientiertes Molekül |0 (DE-588)4272902-6 |D s |
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| 856 | 4 | 2 | |m HEBIS Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028404151&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-028404151 | |
Datensatz im Suchindex
| _version_ | 1811826100471332864 |
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| adam_text |
Contents
1 Motivation 1
2 Principles of organic light-emitting diodes (OLEDs) 5
2 1 Organic semiconductors 5
2 2 Emission and Absorption 7
2 3 Organic light-emitting diodes (OLEDs) 11
231 Working principle 11
232 Efficiency 13
233 Optical loss channels 15
2 4 Optical modeling 17
241 Behaviour of electromagnetic waves at interfaces 17
2411 Maxwell Equations and boundary conditions 17
2412 Reflection and refraction at interfaces 19
2413 Transfer-Matrix formalism 22
242 Optical simulation of OLEDs 24
3 Experimental Methods 27
3 1 Sample preparation 27
311 Method for thin film deposition 27
312 Sample fabrication 28
313 Materials 29
3 2 Characterization techniques 30
321 Measurement of external quantum efficiency 30
322 Time-resolved spectroscopy 32
323 Methods for thin film characterization 33
3231 Profilometry 34
3232 Ellipsometry 34
3233 Angular dependent emission spectra 36
3 3 Measurement of molecular orientation 41
331 Angular dependent photoluminescent emission 41
332 Angular dependent electroluminescent emission 46
4 Influence of emitter orientation on OLED efficiency 49
l
Contents
4 1 Power dissipation spectra 51
4 2 Variation of electron transport layer thickness 54
4 3 Potential for horizontally oriented emitter molecules 56
5 Efficiency analysis of phosphorescent OLEDs 59
5 1 Basic principles of phosphorescent emitters 59
5 2 Guest-host systems with Ir(III) complexes as emitter 61
521 Photophysical properties of Ir(III) complexes 61
522 Determination of the orientation of the transition dipole moment
of different emitter molecules 63
5221 Angular dependent photoluminescence measurements 63
5222 Angular dependent electroluminescence measurements 68
523 OLED stack layout and external quantum efficiency 70
524 OLED efficiency analysis 70
5 3 Guest-host systems with Pt(II) complexes as emitter 72
531 Experimental details and stack layout 73
532 OLED efficiency 74
533 Determination of the orientation of the transition dipole moment
of lPt and 2Pt 74
534 OLED efficiency analysis 77
5 4 Conclusions 79
6 Efficiency analysis of fluorescent OLEDs showing delayed fluorescence 81
6 1 Efficiency enhancement of OLEDs incorporating a highly oriented ther-
mally activated delayed fluorescence emitter 81
611 Basic principles of TADF 82
612 Experimental details and sample preparation 85
613 OLED efficiency 86
614 Determination of the orientation of the transition dipole moment
of CC2TA doped into DPEPO 86
615 Determination of the intrinsic radiative quantum efficiency q 88
616 OLED efficiency analysis 92
6 2 Efficiency enhancement of OLEDs showing triplet-triplet annihilation
and horizontal emitter orientation 95
621 Basic principles of triplet-triplet annihilation 95
622 OLED stack layout and efficiency 96
623 Determination of orientation of transition dipole moment of C545T
doped into Alq3 99
624 Delayed fluorescence by TTA 100
625 OLED efficiency analysis 101
6 3 Conclusions 102
n
Contents
7 Control of molecular orientation 105
7 1 Experimental details 106
7 2 Variation of substrate temperature 107
7 3 Variation of host material 110
7 4 Mechanism for molecular alignment 113
7 5 Conclusion 117
8 Summary 119
A Appendix 123
A l Abbreviations 124
A 2 Optical constants 126
A 3 Correlation between anisotropy factor © and order parameter S 129
A 4 Angular dependent emission spectra 130
A41 Ir(ppy)3 and Ir(ppy)2(acac) 130
A42 CC2TA 130
A43 C545T 131
A 5 Measurement of external quantum efficiency 132
Bibliography 133 |
| any_adam_object | 1 |
| author | Mayr, Christian Eduard 1983- |
| author_GND | (DE-588)107832252X |
| author_facet | Mayr, Christian Eduard 1983- |
| author_role | aut |
| author_sort | Mayr, Christian Eduard 1983- |
| author_variant | c e m ce cem |
| building | Verbundindex |
| bvnumber | BV042978580 |
| classification_rvk | UH 5800 |
| ctrlnum | (OCoLC)934267426 (DE-599)BVBBV042978580 |
| discipline | Physik |
| format | Thesis Book |
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| id | DE-604.BV042978580 |
| illustrated | Illustrated |
| indexdate | 2024-10-02T18:00:17Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-028404151 |
| oclc_num | 934267426 |
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| owner | DE-384 DE-12 DE-83 DE-355 DE-BY-UBR |
| owner_facet | DE-384 DE-12 DE-83 DE-355 DE-BY-UBR |
| physical | iv, 158 Seiten Illustrationen, Diagramme |
| publishDate | 2015 |
| publishDateSearch | 2015 |
| publishDateSort | 2015 |
| record_format | marc |
| spelling | Mayr, Christian Eduard 1983- Verfasser (DE-588)107832252X aut Influence of molecular orientation in organic light-emitting diodes vorgelegt von Christian Eduard Mayr 2015 iv, 158 Seiten Illustrationen, Diagramme txt rdacontent n rdamedia nc rdacarrier Dissertation Universität Augsburg, Mathematisch-Naturwissenschaftlich-Technische Fakultät 2015 Orientiertes Molekül (DE-588)4272902-6 gnd rswk-swf OLED (DE-588)4762455-3 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content OLED (DE-588)4762455-3 s Orientiertes Molekül (DE-588)4272902-6 s DE-604 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028404151&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Mayr, Christian Eduard 1983- Influence of molecular orientation in organic light-emitting diodes Orientiertes Molekül (DE-588)4272902-6 gnd OLED (DE-588)4762455-3 gnd |
| subject_GND | (DE-588)4272902-6 (DE-588)4762455-3 (DE-588)4113937-9 |
| title | Influence of molecular orientation in organic light-emitting diodes |
| title_auth | Influence of molecular orientation in organic light-emitting diodes |
| title_exact_search | Influence of molecular orientation in organic light-emitting diodes |
| title_full | Influence of molecular orientation in organic light-emitting diodes vorgelegt von Christian Eduard Mayr |
| title_fullStr | Influence of molecular orientation in organic light-emitting diodes vorgelegt von Christian Eduard Mayr |
| title_full_unstemmed | Influence of molecular orientation in organic light-emitting diodes vorgelegt von Christian Eduard Mayr |
| title_short | Influence of molecular orientation in organic light-emitting diodes |
| title_sort | influence of molecular orientation in organic light emitting diodes |
| topic | Orientiertes Molekül (DE-588)4272902-6 gnd OLED (DE-588)4762455-3 gnd |
| topic_facet | Orientiertes Molekül OLED Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028404151&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT mayrchristianeduard influenceofmolecularorientationinorganiclightemittingdiodes |