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Performance Enhancement of Organic Light-emitting Diodes with an Electron-transport Layer of Bathocuproine
- Issue Date
- 25-Feb-2016
- Publisher
- KOREAN INST ELECTRICAL & ELECTRONIC MATERIAL ENGINEERS
- Keywords
- Organic light-emitting diodes; BCP (bathocuproine); Recombination rate; Current density; Luminance; Luminous efficiency; External-quantum efficiency
- Citation
- TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS, v.17, no.1, pp.37 - 40
- Journal Title
- TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS
- Volume
- 17
- Number
- 1
- Start Page
- 37
- End Page
- 40
- ISSN
- 1229-7607
- Abstract
- Performance enhancement of organic light-emitting diodes (OLEDs) is investigated in a device structure of ITO/TPD/Alq(3)/LiF/Al and ITO/TPD/Alq(3)/BCP/LiF/Al. Here, bathocuproine (BCP) is used as an electron-transport layer. Current density-voltage-luminance characteristics of the OLEDs show that the performance of the device is better with BCP layer than without BCP layer. The current density, luminance, luminous efficiency, and external-quantum efficiency are improved by approximately 22%, 50%, 2%, and 18%, respectively. Since the BCP layer lowers the electron energy barrier, electron transport is facilitated and the movement of hole is blocked as the applied voltage increases. This results in an increased recombination rate of holes and electrons.
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Related Researcher
- Kim, Tae Wan
- Engineering (Applied Science)