Quantum Dot
The Next-generation Luminescent Material
Overview Quantum dots (QDs) are semiconductor nanocrystals with unique properties such as tuning an energy band gap and melting point by their size. As their size is reduced from bulk dimensions to the nanoscale, new properties is found which never exist before, such as band gap energy changes due to quantum confinement and specific surface area increases while making surface atoms unstable and lowering the material's melting point.
Technology Trend QDs have great potential as light-emitting materials for next-generation displays with highly saturated colors, due to high quantum efficiency, sharp spectral resolution, and easy tunability of wavelength. Because QDs convert a light to a current, it is also applicable in various devices such as solar cells, photo detectors, and image sensors. Colloidal crystal growth techniques, by which the size and shapes of QDs can be readily tuned, represent an economically favorable method for obtaining high-quality and uniform materials. QDs produced by colloidal synthesis have additional functions by coordination with various organic ligands on their surfaces, and thus may also be useful as biosensors, drug delivery systems, and in other advanced treatment modalities. Further applications of QDs include single-electron transistors, optical switches, quantum computers, and quantum memory devices.
SAIT Technology SAIT has developed environmental-friendly QD structures customized for specific applications and is conducting research on interface technologies to manufacture a variety of different composite complexes and novel device applications. Based on our foundation in nanomaterial technology, we are planning to further develop potential core materials for optoelectronic devices and sensor applications.