undoped material 中文意思是什麼
undoped material
解釋
非摻雜材料-
Preparation of semi - insulating material by annealing undoped inp
高溫退火非摻雜磷化銦制備半絕緣材料 -
In this thesis, three systems, namely, perfect and defect sno _ 2 ( 110 ) surfaces, ti and ru - doped surfaces and the adsorptions of small molecules on above perfect surfaces have been studied in details by using the first - principles method with the combination of pseudopotential plane - wave and atomic basis sets. the structural stability, surface states and the surface chemistry of undoped and metal doped sno _ 2 ( 110 ) surfaces have been discussed, which can provide the theoretical rules to improve the surface properties of this special functional material
為了深入了解sno _ 2表面的電子結構本質及其化學反應性質，本論文採用贗勢平面波和原子軌道基組相結合的第一性原理方法，詳細考察了三種類型體系，即sno _ 2 （ 110 ）完整和缺陷表面、 ti和ru摻雜表面、以及典型小分子在上述完整表面的吸附，揭示了sno _ 2 （ 110 ）及其金屬摻雜表面的構型穩定性、表面態及其對表面化學反應性的影響，為該類型表面功能材料的改性提供理論依據。 -
In undoped lec si - gaas single crystal, the density of dislocation is usually very high and the dislocations easily form the cellular structure. the formation and distribution of other impurities and point defects are closely correlative with the cell structure and then result in the non - uniformity distribution of electrical and optical characteristic of gaas material
而非摻lecsi - gaas中的高密度位錯，往往形成胞狀結構；其它雜質和點缺陷的形成與分佈與該結構密切相關，並導致gaas材料電學和光學特性的不均勻。
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