Dual-valence Ce doped UV-shielding glasses with high transparency and stability
Dual-valence Ce doped UV-shielding glasses with high transparency and stability
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DOI：
10.1016/j.ceramint.2020.03.153
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发表时间：
2020-07
影响因子：
5.2
通讯作者：
Yuncheng Jiang;Luping Wang;Wenna Zhang;Liming Teng;Fangfang Hu;Hai Guo
中科院分区：
文献类型：
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作者：
Yuncheng Jiang;Luping Wang;Wenna Zhang;Liming Teng;Fangfang Hu;Hai Guo
由于在各种应用中对紫外辐射防护的迫切需求，从宽带隙半导体到有机-无机复合膜，一直致力于紫外屏蔽材料的研究。然而，它们经常遭受不足的稳定性、复杂的制备和在可见光区的低透明度。本文报道了一种通过调控铈的价态来制备新型紫外屏蔽无机玻璃的方法。采用传统的熔体淬冷法，在空气气氛中成功制备了二价铈掺杂铝硼酸盐玻璃。利用Ce3+和Ce4+的共吸收，玻璃样品在UVA、UVB和UVC波段表现出突出的紫外吸收能力，在可见光波段具有高度的透明性。更重要的是，与目前的抗紫外线有机-无机薄膜相比，玻璃样品在恶劣环境下，包括高温、酸碱环境中存活120 h后，仍保持优异的紫外线防护能力和高透明度。这些结果表明，双价Ce掺杂玻璃具有高的抗紫外能力、良好的可见光透过率和优异的稳定性，可作为温室、车窗和博物馆等多种环境的优良紫外屏蔽材料。
On account the urgent demand for UV radiation protection in diverse applications, intensive efforts have been devoted to UV-shielding materials, ranging from wide-bandgap semiconductors to organo-inorganic composite films. However, they constantly suffer from insufficient stability, complex preparation and low transparency in visible region. Here, we report a new UV-shielding inorganic robust glasses through manipulating valence of cerium. Via conventional melt-quenching method, dual valence Ce-doped aluminoborate glasses were successfully prepared in air atmosphere. By taking advantage of the co-absorption of Ce3+and Ce4+, glass samples present prominent UV-absorbing capability in UVA, UVB and UVC region, and they are highly transparent in the visible-wavelength region. More importantly, compared with current UV resistant organic-inorganic films, glass samples still maintain excellent UV protection ability and high transparency after surviving 120 h in harsh environment, including high temperature, acid and alkaline environment. These results indicate that dual valence Ce-doped glasses, with high anti-UV ability, good visible transparency and excellent stability, could be excellent UV-shielding materials for diverse environment, such as greenhouse, vehicle windows and museums.