Citation
Yap, Seong Shan and Ong, Teng Sian and Ong, Guang Liang and Tou, Teck Yong and Kee, Yeh Yee (2019) Optimisation of graded-mixed transport organic light emitting diode via mixed-source thermal evaporation technique. Microelectronic Engineering, 213. pp. 62-68. ISSN 0167-9317
Text
113.pdf - Published Version Restricted to Repository staff only Download (1MB) |
Abstract
Continuously graded-mixed transport organic light emitting diodes (CGM-OLED) have been fabricated using the mixed-source thermal evaporation method. Different CGM composition profiles can be controlled by the heating ramp rate, and validated by the X-ray photoelectron spectroscopy depth-profiling measurements. With external charge injection, the transport sub-layers formed in-situ at both sides of the CGM region, can act to confine the charges in the central emissive region, or recombination zone; adding charge-blocking layers may degrade the OLED performance. An optimised Alq3-based CGM-OLED was operated at low turn-on voltage of 2.8 V, which delivered maximum luminance, luminance efficiency and power efficiency of 21,135 cd/m2, 5.1 cd/A and 3.1 lm/W, respectively, and retained >80% of the maximum luminance efficiency between 100 and 15,000 cd/m2.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Fluorescent OLED Continuously graded-mixed transport Mixed-source thermal evaporation In-situ charge confinement |
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4125-4399 Electric lighting |
Divisions: | Faculty of Engineering (FOE) |
Depositing User: | Ms Suzilawati Abu Samah |
Date Deposited: | 07 Mar 2022 01:26 |
Last Modified: | 07 Mar 2022 01:26 |
URII: | http://shdl.mmu.edu.my/id/eprint/9211 |
Downloads
Downloads per month over past year
Edit (login required) |