Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4

Wei Xu, Hua Zhao, Yaxin Li, Longjiang Zheng, Zhiguo Zhang, Wenwu Cao

Research output: Contribution to journalArticle

131 Citations (Scopus)

Abstract

Under 980 nm diode laser excitation, efficient upconversion emissions from the Ho3+/Yb3+ codoped CaWO4 phosphor were obtained. The upconversion quantum efficiency was evaluated to be about 3.3% when the power density of the excitation laser was 47 W/cm2. Additionally, temperature dependent blue emissions from the 5F 2,3/3K8 and 5G6/ 5F1 states of Ho3+ ions were studied in the range of 303-923 K. The result demonstrated that using the ratio between the blue luminescence intensities of Ho3+ ions, the sensitivity and the accuracy for optical thermometry achieved here are superior to the previously reported Er3+ green fluorescence based optical temperature sensors.

Original languageEnglish (US)
Pages (from-to)1096-1100
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume188
DOIs
StatePublished - Sep 10 2013

Fingerprint

Laser excitation
Luminescence
Ions
luminescence
Optical sensors
temperature sensors
Temperature sensors
Quantum efficiency
Phosphors
phosphors
excitation
temperature measurement
Semiconductor lasers
radiant flux density
quantum efficiency
ions
Fluorescence
semiconductor lasers
fluorescence
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Xu, Wei ; Zhao, Hua ; Li, Yaxin ; Zheng, Longjiang ; Zhang, Zhiguo ; Cao, Wenwu. / Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4 In: Sensors and Actuators, B: Chemical. 2013 ; Vol. 188. pp. 1096-1100.
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Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4 . / Xu, Wei; Zhao, Hua; Li, Yaxin; Zheng, Longjiang; Zhang, Zhiguo; Cao, Wenwu.

In: Sensors and Actuators, B: Chemical, Vol. 188, 10.09.2013, p. 1096-1100.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4

AU - Xu, Wei

AU - Zhao, Hua

AU - Li, Yaxin

AU - Zheng, Longjiang

AU - Zhang, Zhiguo

AU - Cao, Wenwu

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AB - Under 980 nm diode laser excitation, efficient upconversion emissions from the Ho3+/Yb3+ codoped CaWO4 phosphor were obtained. The upconversion quantum efficiency was evaluated to be about 3.3% when the power density of the excitation laser was 47 W/cm2. Additionally, temperature dependent blue emissions from the 5F 2,3/3K8 and 5G6/ 5F1 states of Ho3+ ions were studied in the range of 303-923 K. The result demonstrated that using the ratio between the blue luminescence intensities of Ho3+ ions, the sensitivity and the accuracy for optical thermometry achieved here are superior to the previously reported Er3+ green fluorescence based optical temperature sensors.

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