dopants

Chiral dopants play an important role in liquid crystal displays, which can convert nematic phase to cholesteric phase.

手性添加剂能诱导向列相形成胆甾相，在液晶显示中具有重要的用途。

The purpose of the study is to establish a new coprecipitation coating doping process for preparing zinc oxide varistor ceramic powders in which the primary constituent is ZnO with smaller amounts of five dopants.

本研究旨在建立以ZnO为主体，五元掺杂物共沉淀包膜法制备氧化锌压敏陶瓷用粉料的新方法。

Dopants for silicon wafers are found in Groups III and V of the Periodic Table of the Elements.

晶圆片搀杂剂可以在元素周期表的III和v族元素中发现。

The role of dopants and contaminants in degradation cannot be ignored.

杂质和污染对退化的作用不能忽视.

The microstructures and thermoelectric properties of Ca 3 Co 4 Oo-based oxides doped by four dopants have been investigated.

选用四种元素作为掺杂剂,分别研究了所得材料的显微结构和热电性能.

Progress in Research on Effects of Metal Ion Dopants on Crystal Phase Transformation of TiO_2

金属离子掺杂对纳米TiO2晶型转变影响作用机制的研究进展

Common donor dopants are Y 3+ and Nb 5+ Usually donor doped content lies in range from o 2 to 0 3 percent Factors influencing on the content are purity of used raw materials, flux for sintering, donor doping process and the others.

常用的施主加入物是Y3＋和Nb5＋，施主掺入量一般控制在x＝0.2%～0.3%为宜。影响施主掺入量的因素有原料纯度、烧结助剂、掺入施主的工艺等。

However, the thermal instability and degradation problem of ZnO varistors have not been resolved because of their multi-phase structure induced by doping more dopants.

但由于掺杂量较大，ZnO压敏材料包含多相结构，它的温度稳定性和老化问题一直没有得到根本的改善。

The effect of different impurities and dopants on the dielectric loss of alumina ceramics are reviewed.

综述了不同杂质及掺杂对氧化铝陶瓷介电损耗影响的研究进展.

The Influence of Rare Earth Dopants upon Properties of High Purity Beryllium Oxide Ceramics

稀土掺杂对99氧化铍陶瓷性能的影响

There are large charge density on the carbon atoms near the dopant, and the effects of p-type dopants are greater than those of n-type ones.

在掺杂剂附近的碳原子上出现较大的电荷密度，且p型比n型掺杂剂的影响更大。

Fig. 1 Influence of dopants on the conductivity of mesoporous alumina.

图1掺杂物对介孔氧化铝导电性的影响.

The dopants of Al_2O_3 greatly inhibited the increase of crystallite size and the phase transformation from tetragonal to monoclinic, also made the phase transformation temperature and crystal lattice distortion increase.

Al2O3的添加抑制了ZrO2（3Y）晶粒的增长和四方相向单斜相的结构相变，使相变温度显著提高，晶格畸变增大。