Wavelength-shifting properties of luminescence nanoparticles for high energy particle detection and specific physics process observation.

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2018
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Abstract
Ultraviolet (UV) photon detection is becoming increasingly important in the quest to understand the fundamental building blocks of our universe. Basic properties of neutrinos and Dark Matter are currently being explored through interactions with noble elements. In response to interactions with fundamental particles, these elements emit scintillation photons in the UV range. However, most available detectors have poor response in the UV so it is typically necessary to shift UV to a wavelength, matching the sensitivity of the viable detectors. We report on development of UV-enhanced photosensors using wavelength-shifting properties of nanoparticles. Several nanoparticle coatings were tested for absorption of UV light with subsequent emission in the visible wavelength for high energy particle detection. ZnS:Mn,Eu, ZnS:Mn, CuCy (Copper Cysteamine) and CdTe nanoparticles all exhibited enhanced detection for wavelengths in the range 200-320 nm in several different tests, while ZnS:Ag and CdS nanoparticle showed little or no enhancement in that range. In addition, various LaF:Ce nanoparticle concentrations in approximately constant thickness of 2,5-diphenyloxazole (PPO)/polystyrene bases were also tested to optimize the nanoparticle concentration for the best outcome. Our studies indicated that ZnS:Mn,Eu, ZnS:Mn, Cu-Cy, CdTe and LaF:Ce nanoparticles show potential for light detection from fundamental particle interactions.
Reference Key
sahi2018wavelength-shifting Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sahi, Sunil;Magill, Stephen;Ma, Lun;Xie, Junqi;Chen, Wei;Jones, Benjamin;Nygren, David;
Journal Scientific reports
Year 2018
DOI
10.1038/s41598-018-28741-y
URL
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