QUANTUM DOT COMPOSITE AND ELECTRONIC DEVICE INCLUDING THE SAME

• Main Authors: KIM, TAE GON, PARK, SHANG HYEUN, JUN, SHIN AE
• Format: Patent
• Language: English; Korean
• Published: 06.12.2021
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to a quantum dot composite including a matrix and a plurality of quantum dots dispersed in the matrix, which exhibits stability (process or optical stability) with improved luminescence properties, and an electronic device including the same. According to the present invention, in the quantum dot composite, a plurality of quantum dots comprises: a semiconductor nanocrystalline core including indium and phosphorus; and a semiconductor nanocrystalline shell disposed on the semiconductor nanocrystalline core and containing zinc, selenium, and sulfur. The arithmetic size of the plurality of quantum dots is 8 nm or more and the quantum dot composite is configured to control increase in luminance within 1.2% of the initial luminance in a solid state when being emitted with excitation light having a wavelength of 450 to 470 nm for up to 500 hours. 매트릭스; 및 상기 매트릭스 내에 분산되어 있는 복수개의 양자점들을 포함하는 양자점 복합체와 이를 포함하는 전자소자에 대한 것이다. 상기 양자점 복합체에서, 상기 복수개의 양자점들은 인듐 및 인을 포함하는 반도체 나노결정 코어, 상기 반도체 나노결정 코어 상에 배치되고 아연, 셀레늄, 및 황을 포함하는 반도체 나노결정 쉘을 포함하고, 상기 복수개의 양자점들의 산술크기는, 8 nm 이상이고 상기 양자점 복합체는, 고체 상태(solid state)에서 파장 450 내지 470 nm 의 여기광으로 최대 500 시간 동안 조사할 때에, 휘도 증가가 초기 휘도의 1.2% 이내로 제어되도록 구성된다.