期刊
ADVANCED MATERIALS INTERFACES
卷 9, 期 15, 页码 -出版社
WILEY
DOI: 10.1002/admi.202200244
关键词
Ag nanoparticles; micro-cavity; localized surface plasmon resonance; top-emitting organic light-emitting diodes
资金
- National Natural Science Foundation of China [62005152, 11974236]
- Hong Kong Research Grants Council [PolyU 153062/18P]
- Hong Kong Polytechnic University [1-ZE1C]
- Research Institute for Smart Energy (RISE)
- Endowed Professorship in Energy [847S]
In this study, a light out-coupling layer composed of Ag nanoparticles and MoOx was introduced on top of the inverted top-emitting OLED. The LOCL significantly improved the light output-coupling of the OLED and protected the sensitive electron injection material, resulting in enhanced device performance. The current efficiency and external quantum efficiency of the OLED were increased by 53% and 30%, respectively.
In this study, a light out-coupling layer (LOCL) composed of Ag nanoparticles (NPs) and MoOx is introduced on top of the inverted top-emitting organic light-emitting diode (OLED). The full width at half maximum (FWHM) is narrowed to 50 nm due to the micro-cavity effect of the top-emitting structure and the turn-on voltage is as low as 2.6 V. The AgNPs in the LOCL significantly improves the light output-coupling of the OLED owing to the localized surface plasmon resonance, and the MoOx in the LOCL effectively protects the water- and oxygen-sensitive electron injection material. As a result, the performance of the OLED with the LOCL is significantly enhanced. The maximum current efficiency and external quantum efficiency of the device are increased by 53% and 30% to 28.27 cd A(-1) and 13.09%. The enhanced electroluminescent performance of the OLED, together with the narrowed FWHM and the low turn-on voltage, provides a new way to realize ultra-high-definition display and micro-display.
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