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12 Novel Nitride LED Technology
Fig. 12.11 STEM image and field distribution model for explaining dimmable LEDs
12.2 Quantum Dot LED
Quantum dots are quasi-zero-dimensional nanomaterials with a typical size of 1 to
100 nm. Essentially, the size of quantum dots needs to be smaller than de Broglie
wavelength of electron. The movement of electrons in quantum dots in all directions is limited, and the quantum confinement effect is very significant. The threedimensional confinement of quantum dots can lead to some unique physical properties such as discrete energy level distribution of atom-like atoms, quantum size
effect, high radiation efficiency, etc. These characteristics make quantum dots high
potentials in important application of nano optoelectronic devices.
Quantum dot LEDs using quantum dots as luminescent media can improve LED
performance or achieve some unique optical properties, which has attracted great
12 Novel Nitride LED Technology
Fig. 12.11 STEM image and field distribution model for explaining dimmable LEDs
12.2 Quantum Dot LED
Quantum dots are quasi-zero-dimensional nanomaterials with a typical size of 1 to
100 nm. Essentially, the size of quantum dots needs to be smaller than de Broglie
wavelength of electron. The movement of electrons in quantum dots in all directions is limited, and the quantum confinement effect is very significant. The threedimensional confinement of quantum dots can lead to some unique physical properties such as discrete energy level distribution of atom-like atoms, quantum size
effect, high radiation efficiency, etc. These characteristics make quantum dots high
potentials in important application of nano optoelectronic devices.
Quantum dot LEDs using quantum dots as luminescent media can improve LED
performance or achieve some unique optical properties, which has attracted great