Near-infrared scintillation response of Bi2O3-doped Al2O3–GeO2 glasses

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-05-15 DOI:10.1016/j.jpcs.2025.112863

Naoki Kawano , Kenji Shinozaki , Daisuke Nakauchi , Takumi Kato , Kai Okazaki , Kensei Ichiba , Toshiaki Kunikata , Akihiro Nishikawa , Keiichiro Miyazaki , Takayuki Yanagida

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Abstract

Al₂O₃–GeO₂ glasses doped with Bi₂O₃ (0.1 %, 0.5 %, and 1.0 %) were fabricated for the development of near-infrared scintillators. The Bi₂O₃-doped Al₂O₃–GeO₂ glasses showed a broadband emission peaking at approximately 1100–1200 nm in photoluminescence, and the broadband emission should be related to the ³P₁→³P₀ transition of Bi⁺. Furthermore, the broad peak was also detected at approximately 1100 nm under X-ray radiation, and the 0.1 % Bi₂O₃-doped Al₂O₃–GeO₂ glass showed the highest photoluminescence and scintillation intensity. Moreover, the near-infrared scintillation performance was investigated using a InGaAs photodiode, and the minimum measurable dose rate of the 0.1 % Bi₂O₃-doped Al₂O₃–GeO₂ glass was about 25 mGy/h that was lower than that of some inorganic single crystals such as SrY₂O₄:Nd.

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bi2o3掺杂Al2O3-GeO2玻璃的近红外闪烁响应

制备了掺有Bi2O3（0.1%， 0.5%和1.0%）的Al2O3-GeO2玻璃，用于近红外闪烁体的发展。掺bi2o3的Al2O3-GeO2玻璃在大约1100 ~ 1200 nm的光致发光处出现宽带发射峰，该宽带发射峰可能与Bi+的3P1→3P0跃迁有关。此外，在x射线辐射下，在约1100 nm处也检测到宽峰，并且0.1% bi2o3掺杂的Al2O3-GeO2玻璃具有最高的光致发光和闪烁强度。此外，使用InGaAs光电二极管研究了近红外闪烁性能，发现掺0.1% bi2o3的Al2O3-GeO2玻璃的最小可测剂量率约为25 mGy/h，低于SrY2O4:Nd等无机单晶的最小可测剂量率。

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.