17991903. QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME
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QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 17991903 titled 'QUANTUM DOTS, AND AN ELECTRONIC DEVICE INCLUDING THE SAME
Simplified Explanation
The patent application describes a quantum dot that consists of a core made of a Group III-V compound semiconductor nanocrystal and a shell made of a Group II-VI compound semiconductor nanocrystal. The quantum dots do not contain cadmium. The shell has three layers, with the first layer directly on the core made of a zinc and selenium semiconductor nanocrystal, the second layer being the outermost layer made of a zinc and sulfur semiconductor nanocrystal, and the third layer between the first and second layers made of a zinc, selenium, and optionally sulfur semiconductor nanocrystal. The difference in peak emission wavelength between the quantum dot solution and the film made from the solution is less than or equal to 5 nanometers.
- Quantum dot with a core made of a Group III-V compound semiconductor nanocrystal and a shell made of a Group II-VI compound semiconductor nanocrystal
- Shell consists of three layers: first layer made of zinc and selenium semiconductor nanocrystal, second layer made of zinc and sulfur semiconductor nanocrystal, and third layer made of zinc, selenium, and optionally sulfur semiconductor nanocrystal
- Quantum dots do not contain cadmium
- Peak emission wavelength difference between quantum dot solution and film made from the solution is less than or equal to 5 nanometers
Potential Applications
- Display technologies
- Biological imaging
- Photovoltaics
- Optoelectronic devices
Problems Solved
- Eliminates the use of cadmium in quantum dots, addressing environmental concerns and potential health risks
- Provides a simplified and efficient method for producing quantum dots with controlled emission wavelengths
Benefits
- Safer alternative to cadmium-based quantum dots
- Enhanced control over emission wavelengths
- Versatile applications in various industries
Original Abstract Submitted
A quantum dot including a core including a first semiconductor nanocrystal including a Group III-V compound, and a shell disposed on the core and including a semiconductor nanocrystal including a Group II-VI compound, wherein the quantum dots do not include cadmium, the shell includes a first layer disposed directly on the core and including a second semiconductor nanocrystal including zinc and selenium, a second layer, the second layer being an outermost layer of the shell and including a third semiconductor nanocrystal including zinc and sulfur, and a third layer disposed between the first layer and the second layer and including a fourth semiconductor nanocrystal including zinc, selenium, and optionally sulfur, and a difference between a peak emission wavelength of a colloidal solution of the quantum dot and a peak emission wavelength of a film prepared from the colloidal solution is less than or equal to about 5 nanometers (nm).
