# US 2014/0197437 A1 · Fluorescent material and illumination device

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- Number: US 2014/0197437 A1
- Document ID: US20140197437A1
- Status: Published application
- Kind: A1
- Application number: 14/150,729
- Filed: 2014-01-08
- Published: 2014-07-17
- Earliest claimed: 2013-01-11
- Assignees: Su-Chemical Corp.; Kai-Shon Tsai
- Applicants: Su-Chemical Corp.
- Inventors: Kai-Shon TSAI
- Web page: https://patentgrep.com/patent/US20140197437A1

## CPC

- H10H 20/8512: {Wavelength conversion materials}
- C09K 11/7706: {Aluminates}
- C09K 11/7774: {Aluminates}
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A fluorescent material represented by the following formula (I): M1yM2nOzCx:M3w (I); wherein M1 is selected from Sc3+, Y3+, La3+, Sm3+, Gd3+, Tb3+, Pm3+, Er3+, Lu3+, and combinations thereof; M2 is selected from Al3+, In3+, Ga3+, and combinations thereof; M3 is selected from Tm3+, Bi3+, Tb+, Ce3+, Eu3+, Mn3+, Er3+, Yb3+, Ho3+, Gd3+, Pr3+, Dy3+, Nd3+, and combinations thereof; and 0.45≦x/n≦0.75, 0.54≦y/n≦0.6, 0.002<w/n≦0.06, and 0.9≦z/n≦1.5. An illumination device including a light emitting element and the aforesaid fluorescent material is also disclosed.

## Claims

### Claim 1

A fluorescent material represented by the following formula (I):
M1yM2nOzCxM3w (I);
wherein M1 is selected from the group consisting of Sc3+, Y3+, La3+, Sm3+, Gd3+, Tb3+, Pm3+, Er3+, Lu3+, and combinations thereof;
M2 is selected from the group consisting of Al3+, In3+, Ga3+, and combinations thereof;
M3 is selected from the group consisting of Tm3+, Bi3+, Tb+, Ce3+, Eu3+, Mn3+, Er3+, Yb3+, Ho3+, Gd3+, Pr3+, Dy3+, Nd3+, and combinations thereof; and
0.45≦x/n≦0.75, 0.54≦y/n≦0.6, 0.002<w/n≦0.06, and 0.9≦z/n≦1.5.

### Claim 2 (depends on 1)

The fluorescent material of claim 1, wherein M1 and M3 are different.

### Claim 3 (depends on 1)

The fluorescent material of claim 1, selected from the group consisting of
Y2.98Al5O7.5C2.25:Tm0.02, Y2.95Al5O6C3:Bi0.05,
Y2.94Al5O6C3:Tb0.06, Y2.95Al5O7.5C2.25:Ce0.05,
Y2.95Al5O6C3:Ce0.05, Y2.95Al5O4.5C3.75:Ce0.05,
Y2.95Al5O6C3:Mn0.05, Y2.75GaAl4O6C3:Mn0.25,
Y2.94Al5O4.5C3.75:Bi0.06, Y2.94Al5O4.5C3.75:Tm0.06,
Y2.94Al5O4.5C3.75:Ce0.04Tb0.02, Y2.95Al5O4.5C3.75:Mn0.05,
Y2.95Ga5O4.5C3.75Mn0.05, Y2.94Al5O6C3:Bi0.06,
Y2.94Al5O6C3:Mn0.06, Y2.94Al5O6C3:Ce0.06,
Lu1.72Gd1.2Al5O6C3:Ce0.05Pr0.03,
Lu1.72Er1Ga5O4.5C3.75:Mn0.25Dy0.03,
Lu1.92Sc1Al5O6C3:Ce0.05Yb0.03,
Sm1.92La1Al5O6C3:Ce0.05Ho0.03,
Y2.32Gd0.6In1Al4O6C3:Ce0.05Nd0.03, and
Lu1.95Pm1Al5O6C3:Ce0.05.

### Claim 4 (depends on 1)

The fluorescent material of claim 1, which has an emission wavelength ranging from 380 nm to 700 nm.

### Claim 5 (depends on 1)

The fluorescent material of claim 1, which has an excitation wavelength ranging from 250 nm to 500 nm.

### Claim 6 (depends on 1)

An illumination device, comprising:
a light emitting element; and
a fluorescent layer that is formed on said light emitting element, that includes a fluorescent material of claim 1, and that is capable of absorbing light emitting from said light emitting element.

### Claim 7 (depends on 6)

The illumination device of claim 6, wherein M1 and M3 of said fluorescent material are different.

### Claim 8 (depends on 6)

The illumination device of claim 6, wherein said fluorescent material is selected from the group consisting of
Y2.98Al5O7.5C2.25:Tm0.02, Y2.95Al5O6C3:Bi0.05,
Y2.94Al5O6C3:Tb0.06, Y2.95Al5O7.5C2.25:Ce0.05,
Y2.95Al5O6C3:Ce0.05, Y2.95Al5O4.5C3.75:Ce0.05,
Y2.95Al5O6C3:Mn0.05, Y2.75GaAl4O6C3:Mn0.25,
Y2.94Al5O4.5C3.75:Bi0.06, Y2.94Al5O4.5C3.75:Tm0.06,
Y2.94Al5O4.5C3.75:Ce0.04Tb0.02, Y2.95Al5O4.5C3.75:Mn0.05,
Y2.95Ga5O4.5C3.75:Mn0.05, Y2.94Al5O6C3:Bi0.06,
Y2.94Al5O6C3:Mn0.06, Y2.94Al5O6C3:Ce0.06,
Lu1.72Gd1.2Al5O6C3:Ce0.05Pr0.03,
Lu1.72Er1Ga5O4.5C3.75:Mn0.25Dy0.03,
Lu1.92Sc1Al5O6C3:Ce0.05Yb0.03,
Sm1.92La1Al5O6C3:Ce0.05Ho0.03,
Y2.32Gd0.6In1Al4O6C3:Ce0.05Nd0.03, and
Lu1.95Pm1Al5O6C3:Ce0.05.

### Claim 9 (depends on 6)

The illumination device of claim 6, wherein said fluorescent material has an emission wavelength ranging from 380 nm to 700 nm.

### Claim 10 (depends on 6)

The illumination device of claim 6, wherein said fluorescent material has an excitation wavelength ranging from 250 nm to 500 nm.