New light from old minerals: scintillation in engineered willemite compositions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00643565" target="_blank" >RIV/67985882:_____/25:00643565 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/25:00643565
Result on the web
<a href="https://hdl.handle.net/11104/0373449" target="_blank" >https://hdl.handle.net/11104/0373449</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/3157/1/012024" target="_blank" >10.1088/1742-6596/3157/1/012024</a>

Result language
angličtina
Original language name
New light from old minerals: scintillation in engineered willemite compositions
Original language description
The glass samples from glass-forming area of the ZnO-Al2O3-SiO2 phase diagram were prepared by standard melt-quenching method at 1400–1600 °C temperature range for 10–12 h. The subsequent annealing with a heating ramp of 5 °C/min to 850 °C yielded glass-ceramics nature of samples. X-ray diffraction measurements identified the presence of amorphous phase for as-prepared samples and two crystalline phases, including monoclinic Zn2SiO4, and rhombohedral Zn2SiO4 (willemite), after annealing. The scintillation and luminescence properties of prepared glass and annealed glass-ceramics were excitation (40 kV), overcoming the standard Bi4Ge3O12 scintillator intensity by more than 160%, was discovered after annealing while as-prepared glass samples exhibited negligible luminescence response to the X-ray exposure. The corresponding scintillation decay with leading component in sub-nanosecond scale was detected for annealed samples. The bandgap of willemite was estimated from the photoluminescence excitation spectra to be at 5.85 eV, photoluminescence emission shows the band in UV region with corresponding photoluminescence decay times spanning from units to tens of nanosecond. The impact of annealing conditions on the material´s structural and optical properties is discussed in detail.
Czech name
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Czech description
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Project
<a href="/en/project/GA23-05507S" target="_blank" >GA23-05507S: Advanced inorganic nanocomposites for distributed sensors of harmful radiation</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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