QUANTUM DOT AND METHOD FOR MANUFACTURING SAME, AND WAVELENGTH CONVERSION MEMBER, ILLUMINATION MEMBER, BACKLIGHT DEVICE AND DISPLAY DEVICE USING QUANTUM DOT

• Main Authors: NISHIKAWA, Hiroaki, MICHIWAKI, Yoko, TSUTSUMI, Emi, IIDA, Kazunori, NIKATA, Soichiro
• Format: Patent
• Language: English; French; Japanese
• Published: 01.10.2020
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; BLASTING; CHEMISTRY; COMPOUNDS THEREOF; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INORGANIC CHEMISTRY; LIGHTING; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NANOTECHNOLOGY; NATURAL RESINS; NON-METALLIC ELEMENTS; PAINTS; PERFORMING OPERATIONS; POLISHES; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; WEAPONS

The purpose of the present invention is to provide an InP quantum dot having good fluorescence characteristics by improving a phosphor starting material thereof. The quantum dot according to the present invention, which contains at least In and P, is characterized in that P is derived from triphenyl phosphite. Preferably, the quantum dot has a core-shell structure in which a nanocrystal serving as a core is surface-coated with a shell. Preferably, the fluorescence wavelength thereof is 450 nm or more. Preferably, a ligand is provided on the surface of the quantum dot. L'objectif de la présente invention concerne un point quantique InP présentant de bonnes caractéristiques de fluorescence par l'amélioration d'un matériau de départ de type luminophore correspondant. Le point quantique selon la présente invention, qui contient au moins In et P, est caractérisé en ce que P provient de phosphite de triphényle. De préférence, le point quantique présente une structure cœur-enveloppe dans laquelle un nanocristal servant de cœur est revêtu en surface d'une enveloppe. De préférence, la longueur d'onde de fluorescence correspondante est de 450 nm ou plus. De préférence, un ligand est situé sur la surface du point quantique. リン原料を改良し、良好な蛍光特性を有するＩｎＰ系の量子ドットを提供することを目的とする。本発明は、少なくともＩｎとＰを含む量子ドットであって、Ｐは、亜リン酸トリフェニル由来であることを特徴とする。量子ドットは、ナノクリスタルをコアとし、前記コアの表面にシェルが被覆されたコアシェル構造を有することが好ましい。蛍光波長が、４５０ｎｍ以上の範囲であることが好ましい。量子ドットの表面に配位子を有することが好ましい。