Quantum dot and light conversion film

• Main Authors: LIU ZHIJUN, WANG YUNJUN, LI JINGQUN, LI HUIZHOU
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2020
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; 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; WORKING-UP

The invention discloses a quantum dot and a light conversion film. The quantum dot contains four elements which are Zn, Cd, Se and S, and the R450 value of the quantum dot is between 1 and 3; whereinthe R450 value is defined as the ratio of the absorbance of the quantum dot at 450 nm to the absorbance of the quantum dot at the peak wavelength of a fluorescence emission peak. Under the long-time irradiation of blue light, the quantum dots can still maintain excellent fluorescence intensity. 本申请公开了一种量子点及光转换膜。量子点含有Zn、Cd、Se、S四种元素，所述量子点的R450值在1～3之间；其中，R450值的定义为量子点在450nm处的吸光度与量子点在其荧光发射峰峰值波长处的吸光度的比值。在蓝光长时间照射下，本申请中量子点依然能保持极好的荧光发光强度。