5. Organic Light Emitting Diodes (OLEDs)
Organic Light Emitting Diodes (OLEDs) represent a transformative technology in the realm of lighting and display systems due to their ability to emit light through organic compounds. The chapter covers the structure, working principles, types, applications, and advantages of OLEDs, alongside the challenges that come with this innovative technology. As research continues, advancements are expected to overcome existing challenges and expand the applications of OLEDs.
Sections
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What we have learnt
- OLEDs use organic compounds to emit light against applied voltage.
- The structure of OLEDs includes layers such as substrate, anode, organic layers, cathode, and encapsulation.
- OLEDs offer benefits such as energy efficiency, superior color quality, and flexibility, but also face challenges like cost and longevity issues.
Key Concepts
- -- Organic Light Emitting Diodes (OLEDs)
- A type of light-emitting diode that uses organic materials to emit light through electroluminescence when an electric current is applied.
- -- Electroluminescence
- The phenomenon where a material emits light in response to an electric current or a strong electric field.
- -- Passive Matrix OLED (PMOLED)
- A simpler and cheaper OLED technology where the display is addressed by a grid of electrodes, suitable for small displays.
- -- Active Matrix OLED (AMOLED)
- A more sophisticated OLED technology where each pixel has its own transistor for control, allowing for higher resolutions and refresh rates.
Additional Learning Materials
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