Manganese doped upconversion luminescence nanoparticles

• US 7,008,559 B2
• Filed: 06/06/2002
• Issued: 03/07/2006
• Est. Priority Date: 06/06/2001
• Status: Expired due to Fees

• Current Assignee: Flir Detection, Inc. (Teledyne Technologies Incorporated)
• Original Assignee: Nomadics, Inc. (Teledyne Technologies Incorporated)
• Inventors: Chen, Wei
• Primary Examiner(s): Koslow, C. Melissa
• Application Number:
  US10/166,313
• Publication Number:
  US 20030030067A1
• Time in Patent Office: 1,370 Days
• Field of Search: 252/301.4 R, 252/301.4 H, 252/301.4 S, 252/301.4 P, 252/301.4 F, 252/301.5, 252/301.6 R, 252/301.6 S, 252/301.6 F, 252/301.6 P
• US Class Current: 252/301.60S
• CPC Class Codes: C09K 11/574 with zinc or cadmium
• CPC Class Codes: C09K 11/7701 Chalogenides
• CPC Class Codes: C09K 11/7702 with zinc or cadmium
• CPC Class Codes: C09K 11/7703 with alkaline earth metals
• CPC Class Codes: C09K 11/886 with rare earth metals
• CPC Class Codes: G01J 1/58 using luminescence generated by light
• CPC Class Codes: G01J 5/28 using photoemissive or photovoltaic cells
• CPC Class Codes: G01K 11/20 using thermoluminescent materials G01K11/32 takes precedence
• CPC Class Codes: G02F 2/02 Frequency-changing of light, e.g. by quantum counters
• CPC Class Codes: H01L 33/50 Wavelength conversion elements
• CPC Class Codes: H01S 3/094092 Upconversion pumping
• CPC Class Codes: H01S 3/16 Solid materials
• CPC Class Codes: H01S 3/1628 characterised by a semiconducting matrix

Abstract

The present relates in general to upconversion luminescence (“UCL”) materials and methods of making and using same and more particularly, but not meant to be limiting, to Mn²⁺ doped semiconductor nanoparticles for use as UCL materials. The present invention also relates in general to upconversion luminescence including two-photon absorption upconversion, and potential applications using UCL materials, including light emitting diodes, upconversion lasers, infrared detectors, chemical sensors, temperature sensors and biological labels, all of which incorporate a UCL material.

Claims

1. An upconversion luminescence nanoparticle material having the general formula (X):

(Mn, R), wherein

(X) is a host having a size less than 100 nm and is represented by the formula (M_1-zN_z)_1-xA_1-rB_r where M=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

N=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

A=S, Se, Te, and O;

B=S, Se, Te, and O;

wherein 0<

x<

1, 0<

r≦

1, 0<

z≦

1, and

(R) is a rare earth ion.

2. The upconversion luminescence nanoparticle material of claim 1, wherein the host is selected from the group consisting of Zn_1-xS_r, Zn_1-xSe_r, Zn_1-xTe_r, Cd_1-xS_r, Cd_1-xSe_r, Cd_1-xTe_r, Pb_1-xS_r, Pb_1-xSe_r, Pb_1-xTe_r, Mg_1-xS_r, Ca_1-xS_r, Ba_1-xS_r and Sr_1-xS_r, wherein 0<

x≦

1, and 0<

r≦

1.

3. The upconversion luminescence nanoparticle material of claim 1, wherein the nanoparticle host is Zn_0.4Cd_0.4S.

4. The upconversion luminescence nanoparticle material of claim 1, wherein the nanoparticle host is Zn_0.9S_0.8Se_0.2.

5. The upconversion luminescence nanoparticle material of claim 1, wherein the rate earth ion is selected from the group consisting of Eu³⁺, Tb³⁺, Ce³⁺ or Er³⁺.

7. The upconversion luminescence nanoparticle material of claim 1, wherein the upconversion luminescence nanoparticle material has an excitation wavelength that is longer than the emission wavelength.

8. The upconversion luminescence nanoparticle material of claim 7, wherein the excitation wavelength is from 400 nm to 5000 nm and the emission wavelength is from about 200 nm to about 2000 nm.

6. An upconversion luminescence nanoparticle material selected from the group consisting of ZnS:

Mn,Er;

ZnSe;

Mn,Er;

MgS;

Mn,Er;

CaS;

Mn,Er;

ZnS;

Mn,Yb;

ZnSe;

Mn,Yb;

MgS;

Mn,Yb;

CaS;

Mn,Yb and ZnS;

Mn, Eu.

9. A film comprising an upconversion luminescence nanoparticle material, wherein the upconversion luminescence nanoparticle material has the general formula (X):

(Mn, R), wherein

(X) is a host having a size less than 100 nm and is represented by the formula (M_1-zN_z)_1-xA_1-rB_r where M=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

N=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

A=S, Se, Te, and O;

B=S, Se, Te, and O;

wherein 0<

x<

1, 0<

r≦

1, 0<

z≦

1, and

(R) is at least one rare earth ion.

10. A solution comprising a nanoparticle material having the general formula (X):

(Mn, R), wherein

(X) is a host having a size less than 100 nm and is represented by the formula (M_1-zN_z)_1-xA_1-rB_r where M=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

N=Zn, Cd, Pb, Ca, Ba, Sr, and Mg;

A=S, Se, Te, and O;

B=S, Se, Te, and O;

wherein 0<

x<

1, 0<

r≦

1, 0<

z≦

1,

(R) is at least one rare earth ion.