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NIR scintillation characteristics of Nd3+-doped BaO–Bi2O3–GeO2 glass and glass ceramics
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DOI：10.1016/j.ceramint.2026.08.160.png)
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Abstract
En 中文
0.5Nd2O3−19.5BaO−60Bi2O3−20GeO2 glass (NBG) and its corresponding glass ceramics (NBG475, NBG485) were investigated on the scintillation properties for the development of near-infrared (NIR) scintillators. The bismuth oxide-based glass (NBG) was prepared by melt-quenching while NBG475 and NBG485 were synthesized by heating NBG at 475 and 485 °C for five minutes, respectively. Sharp photoluminescence and scintillation peaks originating from the radiative transition between 4f levels in Nd3+ ions were observed in the NIR region. The photoluminescence quantum yield (PLQY) was determined to be 67.4% for NBG, 65.2% for NBG475, and 63.0% for NBG485. Furthermore, the NIR emissions from Nd3+ ions were observed under X-ray irradiation, and the scintillation intensity increased by the heat treatment. The minimum detectable X-ray dose rates of NBG, NBG475, and NBG485 were evaluated using an lnGaAs photodiode, and NBG485 with the largest scintillation intensity achieved a minimum detectable dose rate of 89.5 mGy/h. In addition, the afterglow levels of NBG, NBG475, and NBG485 were approximately 170–254 ppm, comparable to the level of Nd-doped Bi4Si3O12 single crystal.
Keywords:
Scintillator
Nd3+
Glass ceramics
Bismuth
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