Korea Institute of Machinery & Materials

Intellectual Discovery Co., Ltd.

Sohee Jeong

Chang-soo Han

Won-sik Seo

Ji-Hye Lee

Won Seok Chang

Chang-Soo Han

Duck Jong Kim

Ju Young Woo

Doh Chang Lee

A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.

Quantum dot stabilized by halogen salt and method for manufacturing the same

Disclosed is a technology of producing quantum dots that are nano-size semiconducting crystals. A quantum dot producing apparatus includes a mixer for mixing precursor solutions, and a heating furnace with a plurality of heating areas providing different temperature conditions to heat the precursor mixture. Between the heating areas, a buffer may be installed which provides a low-temperature condition to prevent addition nucleation. Through this configuration, nucleation is separated from nuclear growth, uniformity in particle size of quantum dots is improved, which enables the mass-production of quantum dots, rather than a quantum dot producing apparatus with a single heating area that provides a constant temperature condition.

Apparatus for manufacturing quantum dot with a plurality of heating zones and method for manufacturing quantum dot

An ultraviolet rays detection apparatus according to the present invention includes a color converting unit including nanocrystal quantum dots and having a color that is changed by irradiation of ultraviolet rays, and a non-color-converting unit disposed closer to the color converting unit and having a color that is not changed by the irradiation of the ultraviolet rays, thereby easily detecting the ultraviolet rays.

Ultraviolet ray detection apparatus using nanocrystal quantum dot

Disclosed is a technique of producing that a technique of producing quantum dots that are nano-size semiconducting crystals. An apparatus of producing quantum dots includes a mixer to mix different kinds of precursor solutions uniformly in a channel by diverging each precursor solution into a plurality of micro streams and joining the diverging micro streams individually with different kinds of micro streams, and a heating furnace to pass the precursor mixture solution discharged from the mixer therethrough to create and grow quantum dot nucleuses, thus producing quantum dots. The mixer may further include a heating unit allowing temperature adjustment. In addition, a buffer which is maintained at a relatively low-temperature is provided between the mixer and the heating furnace in order to prevent additional nucleation. Accordingly, quantum dots may be produced even at a high flow rate, which leads to mass-production of quantum dots.

Growing community of inventors

Daejeon-si, South Korea

Sohee Jeong