Researching | Reduced photon quenching in Ce-doped NaYF4:Yb/Ho upconversion nanoparticles with core/shell structure

Journals >Chinese Optics Letters >Volume 14 >Issue 2 >Page 021601 > Article

Chinese Optics Letters
Vol. 14, Issue 2, 021601 (2016)

Reduced photon quenching in Ce-doped NaYF₄:Yb/Ho upconversion nanoparticles with core/shell structure

Shuai Ye, Jun Song^*, Dong Wang, Yuliang Tian, Junle Qu^**, and Hanben Niu

Author Affiliations

Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

show less

DOI: 10.3788/COL201614.021601 Cite this Article Set citation alerts

Shuai Ye, Jun Song, Dong Wang, Yuliang Tian, Junle Qu, Hanben Niu. Reduced photon quenching in Ce-doped NaYF₄:Yb/Ho upconversion nanoparticles with core/shell structure[J]. Chinese Optics Letters, 2016, 14(2): 021601 Copy Citation Text

show less

Abstract

The use of red light or near-infrared radiation as a luminescent probe for in vivo bio imaging is crucial in order to restrict the strong absorption of short-wavelength light below 600 nm in tissue. It is demonstrated that the emission color of Yb/Ho codoped

{NaYF}_{4}

nanoparticles can be tuned from green to red by incorporating

{Ce}^{3 +}

ions. However, compared with that of the

{NaYF}_{4} : Yb / Ho

nanoparticles, the photoluminescence intensity of the

{Ce}^{3 +}

-tridoped

{NaYF}_{4} : Yb / Ho

nanoparticles is drastically reduced. In this work,

{Ce}^{3 +}

-incorporated core/shell

{NaYF}_{4} : {Yb}^{3 +} 50 %

@

{NaYF}_{4} : {Ho}^{3 +} 0.5 %

nanoparticles are prepared. A strong red emission and a high-intensity ratio between the red emission and green emission are obtained in these upconversion nanoparticles. The emission intensity increases by a factor higher than 120 when compared with that of the

{NaYF}_{4} : Yb / Ho / Ce

nanoparticles. This result indicates that the

{Ce}^{3 +}

incorporation into the

0 = \frac{d N_{1}}{d t} = β_{1} N_{2} + C_{2} N_{2} N_{Ce 0} - R_{1} N_{1} - W_{1} N_{Yb 1} N_{1},

(1-1)

View in Article

0 = \frac{d N_{2}}{d t} = W_{0} N_{Yb 1} N_{0} - β_{1} N_{2} - C_{2} N_{2} N_{Ce 0} - R_{2} N_{2} - W_{2} N_{Yb 1} N_{2},

(1-2)

View in Article

0 = \frac{d N_{3}}{d t} = W_{1} N_{Yb 1} N_{1} + C_{4} N_{4} N_{Ce 0} - R_{3} N_{3} + β_{2} N_{4},

(1-3)

View in Article

0 = \frac{d N_{4}}{d t} = W_{2} N_{Yb 1} N_{2} - R_{4} N_{4} - C_{4} N_{4} N_{Ce 0} - β_{2} N_{4},

(1-4)

View in Article

0 = \frac{d N_{Yb 1}}{d t} = \frac{I}{h ν} σ_{Yb} N_{Yb} - R_{Yb} N_{Yb 1} - (W_{0} N_{0} + W_{1} N_{1} + W_{2} N_{2}) N_{Yb 1} - M N_{Ce 0} N_{Yb 1},

(2-1)

View in Article

0 = \frac{d N_{Ce 1}}{d t} = C_{2} N_{2} N_{Ce 0} + C_{4} N_{4} N_{Ce 0} + M N_{Ce 0} N_{Yb 1} - R_{Ce} N_{Ce 1} .

(2-2)

View in Article

N_{1} = [\frac{(β_{1} + C_{2} N_{Ce 0}) W_{0} N_{0}}{R_{1} (β_{1} + C_{2} N_{Ce 0} + R_{2})} - \frac{W_{1}}{R_{1}}] N_{Yb 1},

(3)

View in Article

N_{2} = \frac{W_{0} N_{0}}{β_{1} + C_{2} N_{Ce 0} + R_{2} + W_{2} N_{Yb 1}} N_{Yb 1},

(4)

View in Article

N_{3} = [\frac{(β_{1} + C_{2} N_{Ce 0}) W_{1}}{R_{1} + W_{1} N_{Yb 1}} + \frac{(β_{2} + C_{4} N_{Ce 0}) W_{2}}{R_{4} + C_{4} N_{Ce 0} + β_{2}}] \frac{W_{0} N_{0} {(N_{Yb 1})}^{2}}{(R_{2} + β_{1} + C_{2} N_{Ce 0} + W_{2} N_{Yb 1}) R_{3}},

(5)

View in Article

N_{4} = \frac{W_{0} W_{2} N_{0} {(N_{Yb 1})}^{2}}{(R_{4} + C_{4} N_{Ce 0} + β_{2}) (R_{2} + C_{2} N_{Ce 0} + β_{1} + W_{2} N_{Yb 1})},

(6)

View in Article

N_{Yb 1} = \frac{I σ_{Yb} N_{Yb 0}}{h ν (R_{Yb} + W_{0} N_{0} + W_{1} N_{1} + W_{2} N_{2} + M N_{Ce 0})},

(7)

View in Article

N_{Ce 0} = \frac{R_{Ce} N_{Ce 1}}{C_{2} N_{2} + C_{4} N_{4} + M N_{Yb 1}} .

(8)

View in Article

I_{r} = N_{3} h ν_{r} R_{3},

(9)

View in Article

I_{g} = N_{4} h ν_{g} R_{4},

(10)

View in Article

I_{r} = [\frac{(β_{1} + C_{2} N_{Ce 0}) W_{1}}{R_{1} + W_{1} N_{Yb 1}} + \frac{(β_{2} + C_{4} N_{Ce 0}) W_{2}}{R_{4} + C_{4} N_{Ce 0} + β_{2}}] \frac{W_{0} N_{0} {(N_{Yb 1})}^{2}}{(R_{2} + β_{1} + C_{2} N_{Ce 0} + W_{2} N_{Yb 1})} h ν_{r},

(11)

View in Article

I_{g} = \frac{R_{4} W_{0} W_{2} N_{0} {(N_{Yb 1})}^{2}}{(R_{4} + C_{4} N_{Ce 0} + β_{2}) (R_{2} + C_{2} N_{Ce 0} + β_{1} + W_{2} N_{Yb 1})} h ν_{g} .

(12)

View in Article

N_{Yb 1}, N_{Ce 0} \propto \frac{1}{1 + M} .

(13)

View in Article

I_{r} \propto \frac{1}{{(1 + M)}^{2} [R_{2} + β_{1} + C_{2} (1 + M) + W_{2} (1 + M)]},

(14)

View in Article

I_{g} \propto \frac{1}{[(R_{4} + β_{2}) (1 + M) + C_{4}] [(R_{2} + β_{1}) (1 + M) + C_{2} + W_{2}]} .

(15)

View in Article

Figures&Tables (4)

References (34)

Copy Citation Text

Shuai Ye, Jun Song, Dong Wang, Yuliang Tian, Junle Qu, Hanben Niu. Reduced photon quenching in Ce-doped NaYF₄:Yb/Ho upconversion nanoparticles with core/shell structure[J]. Chinese Optics Letters, 2016, 14(2): 021601

Download Citation

Set citation alerts for the article

Set citation alerts for the article

Save the article for my favorites

Paper Information

Recommended Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology

Set citation alerts for the article

Please enter your email address