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Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer

Subramanian, Arunkumar
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659

Abstract Details

2011, MS, University of Cincinnati, Engineering and Applied Science: Electrical Engineering.
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.
Marc Cahay, PhD (Committee Chair)
Punit Boolchand, PhD (Committee Member)
Altan Ferendeci, PhD (Committee Member)
110 p.
Electrical Engineering
OLEDs; Hole blocking; TPBI; electric field in a bi-layer OLED; blue and green OLED; inverted OLED

Recommended Citations

Citations

  • Subramanian, A. (2011). Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659

    APA Style (7th edition)

  • Subramanian, Arunkumar. Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer. 2011. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659.

    MLA Style (8th edition)

  • Subramanian, Arunkumar. "Implementation of ‘Hole confinement’ for efficient Inverted and un-doped bi-layer Organic Light Emitting Diodes using a buffer layer." Master's thesis, University of Cincinnati, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312292659

    Chicago Manual of Style (17th edition)

ucin1312292659
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© 2011, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.