Wei Xu
Yanshan University
55 Papers
236 Citations
Wei Xu is an academic researcher from Yanshan University. The author has contributed to research in topics: Photon upconversion & Luminescence. The author has an hindex of 16, co-authored 33 publications. Previous affiliations of Wei Xu include Harbin Institute of Technology.
Chat about Author
Papers
An optical temperature sensor based on the upconversion luminescence from Tm3+/Yb3+ codoped oxyfluoride glass ceramic
TL;DR: In this paper, an optical temperature sensor based on the upconversion luminescence of Tm3+ has been developed for detecting temperature variations achieved better than previous reported rare earth ions fluorescence based temperature sensors.
275
Optical temperature sensing through the upconversion luminescence from Ho3+/Yb3+ codoped CaWO4
TL;DR: In this paper, the upconversion quantum efficiency of Ho3+/Yb3+ codoped CaWO4 phosphor was evaluated under 980-nm diode laser excitation.
250
Short-wavelength upconversion emissions in Ho3+/Yb3+ codoped glass ceramic and the optical thermometry behavior.
TL;DR: It was found that by using fluorescence intensity ratio technique, appreciable sensitivity for temperature measurement can be achieved by using the Ho(3+)/Yb(3+) codoped glass ceramic, a promising candidate for sensitive optical temperature sensor with high resolution and good accuracy.
157
Excellent optical thermometry based on short-wavelength upconversion emissions in Er3+/Yb3+ codoped CaWO4.
Wei Xu,Zhiguo Zhang,Wenwu Cao +2 more
TL;DR: The 4G11/2 and 2H9/2 states of Er3+ were verified to be thermally coupled levels, which can emit the shortest wavelength emissions for optical thermometry known so far.
144
Highly sensitive optical thermometry through thermally enhanced near infrared emissions from Nd3+/Yb3+ codoped oxyfluoride glass ceramic
TL;DR: In this paper, the thermally enhanced phonon-assisted energy transfer (ET) from Yb 3+ to Nd 3+ played an important role in such phenomenon, and it was observed that these NIR emissions were greatly enhanced with the increase of temperature.
142