This work presents results of investigations of photoluminescence and structural properties of ternary Zn$- 1$MIN@x$/Be$-x$/Se, Cd$-1$MIN@x$/Mg$-x$/Se, Zn$- 1$MIN@x$/Mg$-x$/Se and quaternary Cd$-1$MIN@x$MIN@y$/Mg$- x$/Zn$-y$/Se, Zn$-1$MIN@x$MIN@y$/Be$-x$/Mg$-y$/Se, Zn$- 1$MIN@x$/Mg$-x$/Se$-1$MIN@y$/Se$-y$/ mixed crystals. These crystals were grown from the melt by the high-pressure Bridgman method. Zn$-1$MIN@x$/Mg$-x$/Se and Zn$- 1$MIN@x$/Sr$-x$/Se were also obtained by annealing of ZnSe crystals in evacuated quartz ampoules containing Mg or Sr metal. It has been found that admixing of Mg into ZnSe favors the formation of wurtzite Zn$-1$MIN@x$/Mg$-x$/Se while Be-sphalerite Zn$-1$MIN@x$/Be$-x$/Se structures. Low temperature (40 K) photoluminescence spectra consist of exciton, edge and deep levels emission bands. For most of investigated crystals the emission corresponding to the highest photon energy line in luminescence spectrum is observed up to room temperature.
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机译:这项工作介绍了三元Zn $的光致发光和结构性的调查结果 - 1 $ min @ x $ / be $ -x $ / se,cd $ -1 $ min @ x $ / mg $ -x $ / se,zn $ - 1 $ min @ x $ / mg $ -x $ / se和四室CD $ -1 $ min @ x $ min @ y $ / mg $ - x $ / zn $ -y $ / se,zn $ -1 $ min @ $ min @ y $ / $ -x $ / mg $ -y $ / se,zn $ - 1 $ min @ x $ / mg $ -x $ / se $ -1 $ min @ y $ / se $ -y $ /混合水晶。通过高压Bridgman方法从熔体生长这些晶体。 Zn $ -1 $ min @ x $ / mg $ -x $ / se和zn $ - 1 $ min @ x $ / sr $-x $ / se也通过在含有mg或含有mg的抽空的石英安瓿中的znse晶体来获得。 SR金属。已经发现,Mg的混合到Znse的混合福特Zn $ -1 $ min @ x $ / mg $ -x $ / se on-sphalerite zn $ -1 $ min @ x $ / be $ -x $ / se结构。低温(40K)光致发光光谱由激子,边缘和深度发射带组成。对于大多数研究的晶体,观察到发光光谱中最高光子能量管线的发射直至室温。
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机译:(54)标题:具有硅酸盐涂层的固体颗粒(54):FESTKoRPERPARTKEL MIT SILKATBESCHICHTUNG(57)摘要:本发明涉及一种具有二氧化硅涂层的固体颗粒的生产方法,其包括以下步骤:将固体颗粒分散为将其涂覆在水性介质中以产生固体颗粒分散体,通过缓冲系统调节固体颗粒分散体的pH以产生缓冲的固体颗粒分散体,并向缓冲的固体颗粒分散体中添加碱性硅酸盐溶液以形成二氧化硅在涂覆期间将其涂覆在固体颗粒上,其中选择缓冲体系和碱性硅酸盐溶液的量,使得在添加碱性硅酸盐溶液之前和在添加完成之后,缓冲的固体颗粒分散体的pH至少为7.0。碱性硅酸盐溶液的最大含量为11.0。固体颗粒优选是无机固体,特别是