Luminescence enhancement in LaPO4:Ce/CdTe nanocomposite scintillators

Jigang Wang, Ryan Hall, Lun Ma, Wei Chen*, Renfei Feng, Ramaswami Sammynaiken, Yongsheng Wang, Dawei He

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Radiation detection demands new scintillators with high quantum efficiency, high energy resolution, and short luminescence lifetimes. Herein, we report the enhancement in the photoluminescence and x-ray luminescence from CdTe quantum dots in LaPO4:Ce/CdTe nanocomposites and their potential applications for radiation detection. The luminescence enhancement is attributed to energy transfer from LaPO4:Ce to CdTe quantum dots in the nanocomposites. LaPO4:Ce nanoparticles have a high stopping power for radiation but their emission is in the ultraviolet range that is reabsorbed in most polymer host materials. CdTe quantum dots have strong photoluminescence and size-tunable emissions but very weak scintillation emission due to their low stopping power. The combination of LaPO4:Ce nanoparticles and CdTe quantum dots takes the advantages of both materials to make a promising nanocomposite scintillator for radiation detection.

Original languageEnglish
Article number87251Y
JournalProceedings of SPIE- The International Society for Optical Engineering
Publication statusPublished - 2013
Externally publishedYes
Event2013 Micro- and Nanotechnology Sensors, Systems, and Applications V Conference - Baltimore, MD, United States
Duration: 29 Apr 20133 May 2013


  • CdTe
  • Energy transfer
  • LaPO4: Ce
  • Nanocomposites
  • Photoluminescence
  • Radiation detection
  • Scintillation luminescence


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