Development of plastic scintillators loaded with perovskite quantum dots
Arisa Magi, Masanori Koshimizu, Atsushi Satô, Yutaka Fujimoto, Shunji Kishimoto, Takayuki Yanagida, Keisuke Asai
Abstract
Abstract We developed plastic scintillators loaded with perovskite quantum dots (QDs) to enhance the detection efficiency for high-energy photons such as X-rays and gamma rays. QDs with different emission wavelengths were loaded onto plastic scintillators at 5 wt%. The emission from the QDs only was observed in the radioluminescence spectra under X-ray irradiation. The photoluminescence decay behavior indicates that the absorption of the QD emission by the QDs themselves (self-absorption) results in long decay components, which were also observed in the scintillation decay. The detection efficiency for 67.4 keV X-rays was successfully enhanced by loading, although the scintillation light yield was reduced.