Ultraviolet(UV)radiation poses risks to both human health and organics.In response to the urgent demand for UV-shielding across various applications,extensive endeavors have been dedicated to developing UV-shielding materials spanning from wide-bandgap semiconductors toorgano-inorganic composite films.However,existing UV shielding materials,though suitable for daily use,cannot meet the demands of extreme conditions.In this work,we incorporated Ce{35}_({36})as a UV absorber into {39}_({36}){35}_(3)transparent ceramics for UV-shielding.The effect of Ce{35}_({36})concentration on the optical,mechanical,and thermal properties of {39}_({36}){35}_(3)ceramics was systematically investigated.These findings indicate that Ce{35}_({36})serves not only as a UV absorber but also as an effective sintering aid for {39}_({36}){35}_(3)transparent ceramics.The 5 at%Ce-doped {39}_({36}){35}_(3)transparent ceramics exhibit the optimal optical quality,with in-line transmittance of~77%at 800 nm.The introduction of Ce shifted the UV cutoff edge of {39}_({36}){35}_(3)transparent ceramics from {36}50 to375 nm,which was attributed to the visible band absorption of Ce^(4+).This shift grants UV shielding capabilities to {39}_({36}){35}_(3)transparent ceramics,resulting in 100%shielding for ultraviolet C(UVC,100-{36}80 nm)and ultraviolet B(UVB,{36}80-3{36}0 nm)and~95%shielding for ultraviolet A(UVA,3{36}0-400 nm).The service stability(optical properties)under various corrosive conditions(acid,alkali,UV irradiation,and high temperature)was investigated,confirming the excellent stabilityof this transparent ceramic UV-shielding material.A comparison of the performance parameters of transparent ceramics with those of traditional UV shielding materials such as glasses,films,and coatings was conducted.{35}ur work provides innovative design concepts and an effective solution for UVshielding materials for extreme conditions.
Cong ZhangJianqi QiXiaolan ZhouZhonghua LuTiecheng Lu
