A novel structure of ideal ohmic contact p+ ( SiGeC)-n& n+ diodes with three-step graded doping concentration in the base region is presented, and the changing doping concentration gradient is also optimized.

By using the definition of effective doping concentration gradient and depletion approximation, an analytical solution for avalanche breakdown voltage of double sided asymmetric linearly graded junction has been derived.

通过有效掺杂浓度梯度的定义和耗尽近似求解，得到非对称线性缓变结击穿电压的简洁表达式。

Study on the Al/ Ag doping functional gradient thin films deposited by pulsed excimer laser

脉冲激光沉积Al/Ag掺杂功能梯度薄膜

However, as elevating doping gradient and reducing the medium thickness, the intensity of ASE effect will rises and depress the gain efficiency.

但是，随着掺杂浓度梯度的升高与介质片厚的降低，介质的增益水平将由于ASE效应降低。

Computer simulation of the stationary domain in a Gunn diode with a positive doping gradient near the anode

Gunn器件中掺杂梯度引起的静止畴的计算机模拟

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。

The effects of donor doping amount, cooling conditions after sintering and oxidation temperatures on the semiconductivity of SrTiO_3 have been studied.

研究了施主掺杂量，烧成后的冷却条件、氧化温度对SrTiO3半导化的影响。

An Anomaly Phenomenon of the Interaction Between Donor Doping and Acceptor Doping in Highly Donor-Doped BaTiO_3 Ceramics

高施主掺杂BaTiO3陶瓷中施、受主杂质相互作用的一种异常现象

Effect of Liquid-phase Donor Doping and High Calcium Adding on Performance of PTC Material

液相施主及高钙添加对PTC材料性能的影响

Research on Semiconductor Ceramic Materials: Double Donor Doping BaTiO_3

双施主掺杂BaTiO3半导体陶瓷材料的研究

Using liquid-phase donor doping and calcium adding etc method to optimize the formulation, a PTCR material was acquired.

采用液相施主掺杂和添加钙等方法优化配方制成PTCR材料。

Research on Donor Doping of TiO_2-based Varistor Ceramics

TiO2系压敏陶瓷施主掺杂研究

The effect of doping agent on synthesis magnesium nickel hydrogen storage alloys through XRD, SEM and measure equipment of dehydriding velocity and dehydriding content are studied.

借助XRD、SEM和自制放氢量的测试装置研究了掺杂对氢化燃烧合成镁镍储氢合金性能的影响。

By tetrabutyl titanate as titanium source, the ammonium carbonate as the doping agent, used the sol-gel method to prepare titanium dioxide photocatalyst.

以钛酸四丁酯为钛源，碳酸铵为掺杂剂，采用溶胶-凝胶法制备了含氮的二氧化钛光催化剂。

The effects of concentrations of aniline, oxidizing agent, doping agent, and the reaction temperature and period on the conductivity of the composite fiber were discussed.

讨论了氧化剂与苯胺的初始摩尔比、苯胺单体浓度、掺杂酸浓度、反应温度及反应时间对纤维导电性能的影响。

So phosphoric acid as the doping agent, the PANI prepared by interfacial polymerization is more suitable for the electrode materials.

说明磷酸作为掺杂剂，界面法制备出的聚苯胺更适宜用作电极材料。

Conductive Polyaniline was prepared by chemical oxidation using aniline as the starting material and hydrocarbon as the doping agent.

以苯胺为主要原料，盐酸作掺杂剂，采用化学氧化法制备出导电聚苯胺。

Polyaniline of nanostructure was prepared by interfacial polymerization using hydrochloric acid as doping agent and reaction medium.

采用盐酸作为掺杂剂和反应介质，通过界面聚合制备纳米结构的聚苯胺。

Concentration effect of oxidant and doping agent on structure and properties of polyaniline

反应物中氧化剂和掺杂剂浓度对聚苯胺性能与结构的影响

The results show that they are different from the conventional PTCR ceramic materials in the following aspects: The effect of Sb doping density on resistance temperature characteristics of the ceramics materials is high;

结果表明：微量元素Sb的掺杂量对线性电阻温度特性影响较大；

Influence of Doping Density on Hot-carrier-effect in Grooved Gate PMOSFET

杂质浓度对槽栅PMOSFET抗热载流子特性的影响