17821611. ORGANIC ELECTROLUMINESCENT DEVICE simplified abstract (Samsung Display Co., Ltd.)
Contents
ORGANIC ELECTROLUMINESCENT DEVICE
Organization Name
Inventor(s)
Harald Fluegge of Karlsruhe (DE)
Christian Kasparek of Heidelberg (DE)
ORGANIC ELECTROLUMINESCENT DEVICE - A simplified explanation of the abstract
This abstract first appeared for US patent application 17821611 titled 'ORGANIC ELECTROLUMINESCENT DEVICE
Simplified Explanation
The present invention is about a new type of organic electroluminescent devices that have a narrow emission spectrum. These devices consist of a light-emitting layer that includes three different materials: a triplet-triplet annihilation (TTA) material, a thermally activated delayed fluorescence (TADF) material, and a near-range-charge-transfer (NRCT) emitter material.
- The organic electroluminescent devices have a narrow emission spectrum, which means that the light they emit is concentrated in a small range of wavelengths.
- The TTA material, TADF material, and NRCT emitter material work together to achieve this narrow emission spectrum.
- The TTA material helps to convert triplet excitons into singlet excitons, which can then emit light.
- The TADF material enhances the efficiency of the device by harvesting both singlet and triplet excitons and converting them into light.
- The NRCT emitter material contributes to the narrow emission spectrum by facilitating efficient energy transfer between the TTA and TADF materials.
Potential applications of this technology:
- Display devices: The narrow emission spectrum of these organic electroluminescent devices can lead to more vibrant and accurate colors in displays.
- Lighting: These devices can be used to create energy-efficient and high-quality lighting solutions.
- Sensors: The narrow emission spectrum can be utilized in sensors for precise detection and analysis of specific substances.
Problems solved by this technology:
- Wide emission spectra in organic electroluminescent devices can result in less accurate colors and lower efficiency.
- Previous methods to achieve narrow emission spectra often required complex device structures and materials.
- This invention provides a simpler and more effective solution to obtain a narrow emission spectrum.
Benefits of this technology:
- Improved color accuracy: The narrow emission spectrum allows for more precise color reproduction in displays and lighting.
- Higher efficiency: The combination of TTA, TADF, and NRCT materials enhances the efficiency of the device, leading to lower energy consumption.
- Longer lifespan: The method used in this invention helps to achieve longer lifespans for the organic electroluminescent devices.
Original Abstract Submitted
The present invention relates to organic electroluminescent devices comprising a light-emitting layer B comprising a triplet-triplet annihilation (TTA) material, a thermally activated delayed fluorescence (TADF) material and a near-range-charge-transfer (NRCT) emitter material, which exhibits a narrow—expressed by a small full width at half maximum (FWHM)—emission. Further, the present invention relates to a method for obtaining a desired light spectrum and achieving suitable (long) lifespans of an organic electroluminescent device according to the present invention.
