Optical spectroscopy and confocal fluorescence imaging of upconverting Er3+-doped CaF2 nanocrystals

G. A. Kumar; C. W. Chen; R. E. Riman

doi:10.1063/1.2392284

Optical spectroscopy and confocal fluorescence imaging of upconverting Er³⁺-doped CaF₂ nanocrystals

G. A. Kumar, C. W. Chen, R. E. Riman

Inst Adv Material Dev&Nanotech

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Up-conversion emission and confocal fluorescence imaging of Er3+ -doped Ca F2 nanocrystals were investigated using infrared excitation. At Er3+ concentrations less than 2.8 mol %, green emission was dominant while red prevailed at higher concentrations. The simultaneous green and red emission and change in relative intensities is explained with a mechanism utilizing concepts of TPA, ESA, ET, and CR processes.

Original language	English (US)
Article number	093123
Journal	Applied Physics Letters
Volume	90
Issue number	9
DOIs	https://doi.org/10.1063/1.2392284
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2392284

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title = "Optical spectroscopy and confocal fluorescence imaging of upconverting Er3+-doped CaF2 nanocrystals",

abstract = "Up-conversion emission and confocal fluorescence imaging of Er3+ -doped Ca F2 nanocrystals were investigated using infrared excitation. At Er3+ concentrations less than 2.8 mol %, green emission was dominant while red prevailed at higher concentrations. The simultaneous green and red emission and change in relative intensities is explained with a mechanism utilizing concepts of TPA, ESA, ET, and CR processes.",

author = "Kumar, {G. A.} and Chen, {C. W.} and Riman, {R. E.}",

note = "Funding Information: This work was sponsored by the New Jersey State Commission on Science and Technology, USR Optronix, Inc., Sunstones, Inc., and the U.S. Army through the South Carolina Research Authority (subrecipient agreement 2001-509, Task Order 0007, Active Coatings Technology Program).",

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AU - Kumar, G. A.

AU - Chen, C. W.

AU - Riman, R. E.

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PY - 2007

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N2 - Up-conversion emission and confocal fluorescence imaging of Er3+ -doped Ca F2 nanocrystals were investigated using infrared excitation. At Er3+ concentrations less than 2.8 mol %, green emission was dominant while red prevailed at higher concentrations. The simultaneous green and red emission and change in relative intensities is explained with a mechanism utilizing concepts of TPA, ESA, ET, and CR processes.

AB - Up-conversion emission and confocal fluorescence imaging of Er3+ -doped Ca F2 nanocrystals were investigated using infrared excitation. At Er3+ concentrations less than 2.8 mol %, green emission was dominant while red prevailed at higher concentrations. The simultaneous green and red emission and change in relative intensities is explained with a mechanism utilizing concepts of TPA, ESA, ET, and CR processes.

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