Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer
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University of Cincinnati / OhioLINK
2011
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ndltd-OhioLink-oai-etd.ohiolink.edu-ucin13122926592021-08-03T06:14:49Z Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer Subramanian, Arunkumar Electrical Engineering OLEDs Hole blocking TPBI electric field in a bi-layer OLED blue and green OLED inverted OLED Organic Light Emitting Diode (OLED) technology has attracted a great deal of attention over the past ten years in the field of display and lighting. OLED have the advantage of being environment friendly, which is one of the major reasons for the large focus it is being given. The other advantages of displays made from OLEDs include low power consumption, light weight, flexibility, high brightness, high contrast, wide viewing angle and broad color gamut. The rapid growth in the field has led to efforts being devoted to improve OLED efficiency and lifetime and their compatibility. In this thesis we demonstrate improved efficiency of green and blue inverted OLEDs using the hole confining concept. Also the effect of adding a buffer layer of TPBI (1, 3, 5 - tri (phenyl - 2- benzimidazole) – benzene) to conventional green OLEDs is discussed. In the first part, the various steps involved in the fabrication of inverted green and blue OLEDs are discussed. Then the concept of hole confinement is discussed and the luminance of inverted OLEDs is improved by using BCP (Bathocuproine) as the hole confining layer. In the second part the hole confinement concept is implemented on conventional green light emitting OLED using a buffer layer of TPBI. Further, the effect of having a constant emitting layer thickness and variation of TPBI layer thickness is also discussed. Finally, suggestions for future work are offered. 2011-09-23 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Electrical Engineering OLEDs Hole blocking TPBI electric field in a bi-layer OLED blue and green OLED inverted OLED |
| spellingShingle |
Electrical Engineering OLEDs Hole blocking TPBI electric field in a bi-layer OLED blue and green OLED inverted OLED Subramanian, Arunkumar Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| author |
Subramanian, Arunkumar |
| author_facet |
Subramanian, Arunkumar |
| author_sort |
Subramanian, Arunkumar |
| title |
Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| title_short |
Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| title_full |
Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| title_fullStr |
Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| title_full_unstemmed |
Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer |
| title_sort |
implementation of ‘hole confinement’ for efficient inverted and un-doped bi-layer organic light emitting diodes using a buffer layer |
| publisher |
University of Cincinnati / OhioLINK |
| publishDate |
2011 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659 |
| work_keys_str_mv |
AT subramanianarunkumar implementationofholeconfinementforefficientinvertedandundopedbilayerorganiclightemittingdiodesusingabufferlayer |
| _version_ |
1719433431050354688 |