Development of ultra-fast semiconducting scintillators using quantum confinement effect

Kengo Shibuya, Masanori Koshimizu, Hidetoshi Murakami, Yusa Muroya, Yosuke Katsumura, Keisuke Asai

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


The concept of a "quantum scintillator", satisfying both a large light output and a quick response, is proposed. The temporal behavior of scintillation from (n-C6H13NH3) 2PbI4, a natural multiple quantum well structure provided by the lead-halide-based perovskite-type organic-inorganic hybrid compound, was investigated using a short-pulsed electron beam and a streak camera. A decay component of 390 ps was efficiently observed even at room temperature. This response is notably quicker than conventional Ce3+-activated scintillators because of a quantum confinement effect that increases the overlapping region of electron and hole wavefunctions in the low-dimensional system. This achievement would be the next breakthrough in the development of ultra-fast inorganic scintillators.

Original languageEnglish
Pages (from-to)L1333-L1336
JournalJapanese Journal of Applied Physics
Issue number10 B
Publication statusPublished - 2004 Oct 15


  • CPbBr
  • CPbl
  • Electron linac
  • Excitonic luminescence
  • Low-dimensional quantum confinement system
  • Microchannel-plate photomultiplier tube (MCP-PMT)
  • Pure semiconducting scintillator
  • Thermal quenching


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