Optical and electrical multi-level switching of photochromic organic memory diodes:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2015
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zsfassung in dt. und engl. Sprache |
| Beschreibung: | IV, 251 S. graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Optical and electrical multi-level switching of photochromic organic memory diodes |c vorgelegt von Peter Oliver Körner |
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Datensatz im Suchindex
| _version_ | 1804174998159491072 |
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| adam_text | Titel: Optical and electrical multi-level switching of photochromic organic memory diodes
Autor: Körner, Peter Oliver
Jahr: 2015
Contents
1 Introduction and motivation 1
2 Background 5
2.1 Organic electronic devices..............................................6
2.1.1 Organic semiconductors........................................6
2.1.2 Charge carrier injection ........................................9
2.1.3 Charge Transport ..............................................13
2.1.4 Solution processed multi-layer structures via Cross-linking . . 18
2.2 Photochromism ........................................................20
2.2.1 Photochrome molecules............................22
2.2.2 Dithienylethenes................................................26
2.2.3 Dithienylethenes in organic electronics ........................32
3 Intermediate states in optically switched devices 35
3.1 Device concept and performance ......................................36
3.1.1 Active photochromic compound XDTE........................36
3.1.2 Device layer stack..............................................38
3.1.3 JV-characteristics..............................................40
3.2 Hole-Only Devices......................................................50
3.2.1 Multi-layer hole-only devices....................................54
3.3 Intermediate states...........................56
3.3.1 In situ reflectance absorption spectroscopy....................56
3.3.2 Intensity profile of external light within the device ............63
3.3.3 Electrical read-out.......................69
3.3.4 Percolation model for intermediate states......................82
3.3.5 Data retention and read-out stability..........................85
3.4 Summary of intermediate states in optically switched devices..........89
4 Current-induced switching 91
4.1 Current-induced opening................................................93
4.1.1 Spectral characteristics ........................................93
4.1.2 Molecular switching mechanism................102
4.1.3 Electrical characteristics........................................107
4.2 Current-induced closing................................................113
4.2.1 Spectral characteristics ........................................113
4.2.2 Electrical characteristics........................................117
4.2.3 Mechanism of current-induced closing..........................123
4.2.4 Reversibility....................................................138
4.2.5 Data retention and read-out stability.............141
4.3 Summary of current-induced switching ................................144
5 Electro-optical switching with a stacked device structure 147
5.1 Device concept and fabrication ........................................148
5.1.1 Layer stack and device geometry ...............148
5.1.2 Cross-linking of CBOO..........................................151
5.1.3 OLED characteristics ..........................................157
5.2 Switching performance..................................................160
5.2.1 Spectral characteristics ........................................160
5.2.2 Read current-density............................................164
5.3 Summary of stacked device structure..................................168
6 Integration of OMEMs into a Passive Matrix Array 169
6.1 Device Layout and Fabrication........................................170
6.1.1 Cross-talk in Passive Matrix Arrays............................171
6.1.2 Suppression of cross-talk in OMEM devices..........172
6.1.3 Device edge leakage currents .................175
6.1.4 Device area to edge ratio ...................178
6.1.5 Strategies for the reduction of edge leakage currents.....182
6.2 Multi-level programming of a passive matrix .............188
6.2.1 Optical Programming.....................192
6.2.2 Electrical Programming....................192
6.3 Summary of passive matrix integration ................196
7 Summary and Outlook 197
8 Experimental Part 205
8.1 Device fabrication...........................206
8.1.1 Device geometries.......................206
8.1.2 Substrate preparation .....................212
8.1.3 Organic layers and cross-linking procedure ..........212
8.1.4 Metal deposition........................215
8.1.5 Encapsulation .........................215
8.1.6 Optical Lithography......................216
8.2 Device characterization ........................217
8.2.1 (L)IV-Measurements and electrical switching.........217
8.2.2 Electroluminescence spectra..................217
8.2.3 Reflectance UV-Vis spectroscopy...............218
8.2.4 Optical switching .......................218
8.2.5 Layer thickness measurements via profilometry........220
8.2.6 Scanning Electron Microscopy.................220
8.2.7 Determination of refractive indeces via UV-Vis spectroscopy . 221
8.3 Numerical Simulations.........................221
8.4 Overview of Materials.........................222
9 Appendix 227
9.1 Additional data.............................228
9.1.1 Refractive indices used for simulations ............228
9.1.2 Additional simulations of light intensity and closed isomer dis-
tributions ............................229
9.1.3 Additional JV-characteristics..................230
9.1.4 Additional spectra.......................231
9.2 Abbreviations..............................233
References 235
|
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| dewey-ones | 541 - Physical chemistry |
| dewey-raw | 541.35 |
| dewey-search | 541.35 |
| dewey-sort | 3541.35 |
| dewey-tens | 540 - Chemistry and allied sciences |
| discipline | Chemie / Pharmazie |
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| indexdate | 2024-07-10T07:09:18Z |
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| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-028202948 |
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| physical | IV, 251 S. graph. Darst. |
| publishDate | 2015 |
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| spelling | Körner, Peter Oliver 1982- Verfasser (DE-588)1073879925 aut Optical and electrical multi-level switching of photochromic organic memory diodes vorgelegt von Peter Oliver Körner 2015 IV, 251 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zsfassung in dt. und engl. Sprache Köln, Univ., Diss., 2014 Fotochrome Verbindungen (DE-588)4174479-2 gnd rswk-swf Molekularer Schalter (DE-588)4444367-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Fotochrome Verbindungen (DE-588)4174479-2 s Molekularer Schalter (DE-588)4444367-5 s DE-604 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028202948&sequence=000004&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Körner, Peter Oliver 1982- Optical and electrical multi-level switching of photochromic organic memory diodes Fotochrome Verbindungen (DE-588)4174479-2 gnd Molekularer Schalter (DE-588)4444367-5 gnd |
| subject_GND | (DE-588)4174479-2 (DE-588)4444367-5 (DE-588)4113937-9 |
| title | Optical and electrical multi-level switching of photochromic organic memory diodes |
| title_auth | Optical and electrical multi-level switching of photochromic organic memory diodes |
| title_exact_search | Optical and electrical multi-level switching of photochromic organic memory diodes |
| title_full | Optical and electrical multi-level switching of photochromic organic memory diodes vorgelegt von Peter Oliver Körner |
| title_fullStr | Optical and electrical multi-level switching of photochromic organic memory diodes vorgelegt von Peter Oliver Körner |
| title_full_unstemmed | Optical and electrical multi-level switching of photochromic organic memory diodes vorgelegt von Peter Oliver Körner |
| title_short | Optical and electrical multi-level switching of photochromic organic memory diodes |
| title_sort | optical and electrical multi level switching of photochromic organic memory diodes |
| topic | Fotochrome Verbindungen (DE-588)4174479-2 gnd Molekularer Schalter (DE-588)4444367-5 gnd |
| topic_facet | Fotochrome Verbindungen Molekularer Schalter Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028202948&sequence=000004&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT kornerpeteroliver opticalandelectricalmultilevelswitchingofphotochromicorganicmemorydiodes |