Crystal Growth and Scintillation Properties of Carbazole for Neutron Detection

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Carbazole crystals were grown using self-seeding vertical Bridgman technique, and the scintillation properties for neutron detection were investigated. Results of powder X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses indicated the single phase of the grown carbazole crystal with orthorhombic structure. Photo-and radio-luminescence measurements were carried out, and maxima of both emission peaks were at 420 nm. The light yield under 5.5-MeV alpha-ray irradiation was estimated to be 1.87 times higher than that of lithium glass GS-20. The scintillation decay time under neutron irradiation was estimated to be 11.4 ± 0.3 ns. It follows from the temperature dependence measurements that the light output under 662-keV gamma-ray excitation decreases with increasing temperature.

Original languageEnglish
Article number9097916
Pages (from-to)1027-1031
Number of pages5
JournalIEEE Transactions on Nuclear Science
Issue number6
Publication statusPublished - 2020 Jun


  • Crystal growth
  • neutron detectors
  • organic scintillators


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