An object is to provide a new type of near-infrared ray-emitting phosphor which exhibits excellent emission intensity. A near-infrared ray-emitting phosphor is represented by a general formula, (Y, Lu, Gd).sub.3-x-y (Ga,Al,Sc).sub.5O.sub.12:(Cr.sub.x,(Yb,Nd).sub.y) (0.05<x<0.3, 0≤y<0.3).

Disclosed are a surface-modified quantum dot surface-modified with a ligand complex having a specific structure on the surface of the semiconductor nanocrystal, a method for preparing the same, and a quantum dot-polymer composite or electronic device including the same.

A method of producing a nitride fluorescent material having relatively high light emission intensity is provided. The method of producing a nitride fluorescent material includes preparing a calcined product having a composition containing at least one first element selected from the group consisting of Ba, Sr, Ca, and Mg, at least one second element selected from the group consisting of Eu, Ce, Tb, and Mn, and Si and N, and bringing the calcined product into contact with a fluorine-containing substance at a temperature in a range of −20° C. or higher and lower than 150° C.

The present invention may provide phosphor-integrated nanoparticles whose precipitation and/or aggregation, particularly aggregation can be inhibited upon carrying out immunostaining therewith and which can thus be used for staining even after long-term storage without requiring a complicated operation, the phosphor-integrated nanoparticles preferrably maintaining excellent performance, such as staining properties, even after long-term storage. The phosphor-integrated nanoparticles of the present invention have an average sphericity (f) of 0.80 to 0.95 and preferably have an average circumference ratio (R) of 0.50 to 0.95. More preferably, the matrix of the particles contains an organic compound, the phosphor-integrated nanoparticles have an average particle size of 300 nm or less, and a biological component-binding molecule is bound on the particle

The present invention relates to a photocurable resin composition, a method for preparing the same, and an optical film comprising the same, more specifically, the photocurable resin composition comprises organophosphate-based (meth)acrylate; and a phenolic compound or a phosphate compound containing phenolic —OH. Thus, since the photocurable resin composition can ensure storage stability, it is suitable as a material for a transparent display.

A composition including a quantum dot, a dispersing agent for dispersing the quantum dot, a polymerizable monomer including a carbon-carbon double bond, an initiator, a hollow metal oxide particulate, and a solvent, and a quantum dot-polymer composite manufactured from the composition.

This specification discloses methods of enhancing the stability and performance of Eu.sup.2+ doped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr.sub.4C.sub.4 crystal structure type and having a composition of AE.sub.1−xLi.sub.3−2yAl.sub.1+y−zSi.sub.zO.sub.4−4y−zN.sub.4y+z:Eu.sub.x (AE=Ca, Sr, Ba, or a combination thereof, 0<x<0.04, 0≤y<1, 0<z<0.05, y+z≤1). It is believed that the formal substitution (Al,O).sup.+ by (Si,N).sup.+ reduces the concentration of unwanted Eu.sup.3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.

A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2θ=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2θ=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.

A phosphor is specified. The phosphor has the general molecular formula:
(MA).sub.a(MB).sub.b(MC).sub.c(MD).sub.d(TA).sub.e(TB).sub.f(TC).sub.g(TD).sub.h(TE).sub.i(TF).sub.j(XA).sub.k(XB).sub.l(XC).sub.m(XD).sub.n:E.
In this case, MA is selected from a group of monovalent metals, MB is selected from a group of divalent metals, MC is selected from a group of trivalent metals, MD is selected from a group of tetravalent metals, TA is selected from a group of monovalent metals, TB is selected from a group of divalent metals, TC is selected from a group of trivalent metals, TD is selected from a group of tetravalent metals, TE is selected from a group of pentavalent elements, TF is selected from a group of hexavalent elements, XA is selected from a group of elements which comprises halogens, XB is selected from a group of elements which comprises O, S and combinations thereof, -E=Eu, Ce, Yb and/or Mn, XC=N and XD=C. The following furthermore hold true: a+b+c+d=t; e+f+g+h+i+j=u; k+l+m+n=v; a+2b+3c+4d+e+2f+3g+4h+5i+6j−k−2l−3m−4n=w; 0.8≤t≤1; 3.5≤u≤4; 3.5≤v≤4; (−0.2)≤w≤0.2 and 0≤m<0.875 v and/or v≥1>0.125 v.

A quantum dot, a quantum dot composite including the quantum dot, a composition for preparing the quantum dot composite, a display panel including the quantum dot composite, and an electronic apparatus including the display panel. The quantum dot includes a semiconductor nanocrystal core including indium and phosphorus, the semiconductor nanocrystal core having an emission peak wavelength from about 600 nm to about 650 nm, or an emission peak wavelength from about 500 nm to about 550 nm, and an area of a peak from about 400° C. to about 500° C. is 0.17 times to 0.5 times relative to an area of a peak from about 200° C. to about 300° C. in a thermogravimetric analysis (TGA) graph as determined with a differential scanning calorimeter (DSC).