Gamma-ray induced reversible photochromism of Mn2+ activated borophosphate glasses

Gamma-ray induced reversible photochromism of Mn2+ activated borophosphate glasses
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γ射线诱导Mn2活化硼磷酸盐玻璃的可逆光致变色

DOI:
10.1016/j.solmat.2014.11.005
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发表时间:
2015-12
影响因子:
6.9
通讯作者:
Alessia Cemmi
Alessia Cemmi
中科院分区:
材料科学2区
文献类型:
--
作者:
Wei Shen;Guorong Chen;Stefania Baccaro;Alessia Cemmi

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光致变色玻璃作为可切换透镜和辐射剂量计引起了人们越来越多的兴趣。在这里,我们报道了一种新的廉价的光致变色材料--Mn2+激活的硼磷酸盐玻璃,它可以很容易地用传统的熔融猝灭方法制备。用差示吸收光谱对其光致变色性能进行了表征,其光致变色源于玻璃样品在伽马射线照射下发生的Mn2+向Mn3+的转化。结果表明,通过添加碱(Na2O)和碱土(SRO、BaO、CaO)氧化物来改变玻璃的结构和光学碱度,可以控制光致变色。
Photochromic glasses have attracted increasing interests as switchable lenses and radiation dosimeters. Here, we report on a new and cheap photochromatic material, Mn2+activated borophosphate glass which can be readily prepared by the conventional melt-quenching method. The photochromic properties are characterized by differential absorption spectra, and the photochromism stems from the conversion of Mn2+to Mn3+when the glass samples are exposed to gamma-rays. Our results show that the photochromism can be controlled by modifying the glass structure and optical basicity through adding of alkali (Na2O) and alkali-earth (SrO, BaO and CaO) oxides.
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