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In addition, the effects of transition-metal-doping and mixed crystalline effect are discussed in detail. Two worthy problems which are the photocatalytic activity of brookite and the Ti-doping TiO2 are put forward.

此外,本文对混晶效应和过渡金属离子掺杂的影响也作了较详细的探讨,提出了两个值得进一步深究的问题:板钛矿型TiO2的光催化活性以及Ti4+的掺杂。

The second collector layer is made of a doped or undoped semiconductor having a narrower band gap than the first collector layer in such a way as to contact the base region.

第二集电极层是由掺杂或未掺杂的半导体制成的,具有比第一集电极层窄的带隙,与基极区域接触。

Hexagonal nano-silicon carbide thin films doped and undoped with phosphorus which possess a characteristic of the ultraviolet photoluminescence have been deposited by helicon wave plasma enhanced chemical vapour deposition technique under the high hydrogen condition in this work. The optical and electric properties of the doped nano-SiC films together with the electric and photovoltage properties of the n-p nc-SiC/Si heterojunction is studied and analyzed.

本工作利用螺旋波等离子体化学气相沉积技术在高氢气条件下制备了具有紫外发光的六角晶型纳米碳化硅,对这种材料进行了不同比例的磷掺杂,并对这种掺杂的纳米碳化硅的光学、电学特性以及nc-SiC/Si异质结的电学特性和光电压特性进行了研究。

The main objective of this project is to apply the gel-casting technique, a novel ceramic forming method, in the development of IT-SOFCs. The gel-casting technique was investigated, modified and optimized to synthesize strontium doped lanthanum manganate La_(0.72Sr_(0.18)MnO_3, LSM, lanthanum strontium manganese chromite (La_(0.75)Sr_(0.25)_(1-x)Cr_(0.5Mn_(0.5)O_(3-δ), LSCM, LaCoO_3-based nano powders and lanthanum silicate apatite electrolyte powders.

本论文采用优化的凝胶注模工艺合成了以下粉体:Sr~(2+)离子掺杂的锰酸镧(La_(0.8)Sr_(0.2)_(0.9)MnO_3,LSM阴极粉体、Sr~(2+)和Mn~(2+)离子共掺杂的铬酸镧(La_(0.75)Sr_(0.25)_(1-x)Cr_(0.5Mn_(0.5)O_(3-δ),LSCM阴极/阳极粉体、LaCoO_3阴极纳米粉体和磷灰石结构硅酸镧La_(10)Si_6O_(27)电解质粉体。

In order to improve its solubility and conductivity, the chemical oxidation method was used to prepare emeraldine salt type conductive polyaniline co-doped with nitric acid (HNO3) and dodecylbenzene sulfonic acid.

本研究使用化学氧化聚合法,以硝酸与十二烷基苯磺酸共掺杂制备导电性聚苯胺,采用共掺杂的方法不但可改善聚苯胺难溶的特性,更可兼顾聚苯胺之导电性。

Finally, Compared with the emission intensity of the films ,the film prepared by citric acide method is 73 precent of that prepared by hexamethylene tramine method. The quenching concentration of Eu3+ increased from 6% to 8% by Sol-gel method.

经过不同浓度的Eu~(3+)掺杂的发光性能检测表明,用溶胶—凝胶法制备Y_2O_3:Eu~(3+)时,掺杂浓度从常规高温固相法的6%提高到了8%。

In this paper, transparent Er(superscript 2+) ions doped oxyfluoride glass-ceramics was prepared by high temperature melting and thermal treatment technology. The changes of micro-crystals structure, UV-VIS absorption spectra and NIR emitting spectra occurred with the variety of Er(superscript 3+) concentrations were studied.

采用高温熔融及热处理工艺,制备了透明度良好的Er(上标 3+)离子掺杂的氟氧化物玻璃陶瓷,并研究了不同Er(上标 3+)离子掺杂浓度下,玻璃陶瓷微晶结构、紫外-可见波段吸收光谱、近红外发射光谱的变化。

The samples were characterized by XRD、TEM、XPS and UV-VIS diffraction spectrum.

Ce4+掺杂TiO2纳米光催化剂的制备及反应活性研究用简单的水热方法制备了Ce4+掺杂的锐钛矿和金红石相TiO2样品,并对其光催化活性进行了考察。

Nano-TiO2 co-doped with La(superscript 3+)-Fe(superscript 3+) was prepared by sol-gel method and the photocatalystic activity under ultra-violet light was evaluated by photocatalytic degradation of methyl blue.

采用溶胶-凝胶法制备了La(上标 3+)-Fe(上标 3+)共掺杂的TiO2纳米粉体,并以亚甲基蓝溶液为目标降解物研究了掺杂纳米TiO2粉体在紫外光作用下的光吸收和光催化性能。

The pure and WO3-doped TiO2 nanoparticles photocatalyst was prepared by chemical precipitation, in which titanium tetrachloride was used as Ti-precursor, ammonia as precipitant and sodium tungstate as doping donor.

以TiCl4为钛前驱体,氨水为沉淀剂,钨酸钠为掺杂体给体,采用化学沉淀法,制备了纯的与WO3掺杂的TiO2纳米光催化剂。

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