quantum confinement effect and strong visible light emission from porous silicon

it is reported firstly by canham in 1990 that porous silicon can exhibit visible photoluminescence at room temperature.

1990年，英国科学家Canham首次观察到室温下多孔硅强的可见光致发光，并用量子限制效应进行了解释使多孔硅迅速成为世界范围内的研究热潮。

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due to the quantum confinement effect, the ge quantum dots ( qds), grown by self-assembly, show many novel optoelectronic properties. the devices utilizing these properties may be potentially used in the future integrated-chip circuit and nanoelectronics.

由于量子限制效应，自组装生长的Ge量子点具有许多奇特的光学和电学性质，利用这些性质制备的器件，可能会在未来的集成电路和纳米电子学方面具有重要的应用前景。

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the nanoparticles were characterized by uv vis absorption spectra, x ray powder diffraction ( xrd), transmission electron microscopy ( tem) and high resolution tem ( hrtem).

通过紫外-可见吸收光谱、X-射线粉末衍射（XRD）、透射电镜（TEM）和高分辨透射电镜（HRTEM）对样品的结构及量子限制效应影响下的光学特性进行了表征；

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experimental evidence for quantum confinement in 3c-sic nanoparticles

3C-SiC纳米颗粒量子限制效应的实验证据

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the pl analysis shows that nitrogen incorporating in the film will result in the increase of si defect density, the pl of n doped nanocrystalline 3c-sic thin films mainly origin from the quantum confinement effect and si defect luminescent centers.

薄膜光致发光分析结果显示，薄膜中N的引入使Si空位缺陷增加，N掺杂纳米SiC薄膜发光呈现为典型的纳米SiC的量子限制效应与硅空位缺陷的综合发光。

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we report recent experimental evidence for the quantum confinement effect in 3c-sic nanoparticles.

报道了关于3C-SiC纳米颗粒量子限制效应的实验证据。

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preparation of pbs ultrafine particles and study of quantum size effect

硫化铅超微粒的制备及量子尺寸效应研究

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synthesis and quantum size effect of carbon nanoparticles doped in gel-glasses

含碳纳米颗粒凝胶玻璃的制备及其量子尺寸效应

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the uv vis spectrum showed a wider absorption peak at 475 nm, and had 40 nm blue shift compared with bulky materials, indicating that the particles had obvious quantum size effect.

紫外-可见光谱在475nm处有最大吸收，与常规材料相比蓝移了40nm，表现出明显的量子尺寸效应。

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in 1986 years halperin gave a full summary about the theory, and utilized the theory to give a deeply analysis about the quantum effect of nano-particles.

1986年Halperin对这一理论进行了较全面归纳，并用这一理论对纳米粒子的量子尺寸效应进行了深入的分析。

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with the decrement of particle size, the photocatalytic activity increases, and the quantum size effect was found when the size of tio_2 was less than 20 nm.

随粒径的减小催化剂活性提高，当粒径小于20nm时，显示量子尺寸效应。

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the authors pointed out that the existence of suspended bonds on the surface of agbr nanometer grains results in the enhancement of average bond energy, thus explained these emulsions' quantum size effect.

本文提出晶体表面的悬键的存在使得纳米晶体的平均键能升高，并对纳米AgBr乳剂的量子尺寸效应进行了解释。

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due to the special nature of surface effect, small size effect and quantum size effect, nanoparticles ( nps) are very different from traditional materials, and they are widely used in various aspects of daily life.

纳米颗粒（NPs）由于具有表面效应、小尺寸效应、量子尺寸效应等不同于传统材料的优良性质，在人类生活的各个方面应用广泛。

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the effects of small dimensions and of quantum dimensions were found in nano-zro_2 powder prepared by use of super-alkaline synthetic method at low temperature and quasi-phase change also took place.

用低温强碱合成法制得的纳米ZrO2粉体具有小尺寸和量子尺寸效应，产生准相变。

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using pva as template, ethylenediamine as solvent, through solvothermal method, synthesized zns organic/ inorganic composite film. the result identified by tem showed that zns nanoparticles with small size were well dispersed in pva matrix.

以聚乙烯醇（PVA）为基体采用溶剂热方法合成了ZnS有机无机复合薄膜，结果表明，ZnS纳米粒子直径小，分布均匀，薄膜具有较强的发光性能，量子尺寸效应明显。

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presents the investigation into the quantum size effect and photocatalytic properties of zno ultrafine particles using different testing techniques such as laser raman spectra, xrd, tem, bet, sps, uv vis absorption spectra.

利用Raman激光光谱、XRD、TEM、BET、SPS和UV-Vis等手段研究了ZnO超微粒子的量子尺寸效应和光催化性能。

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the quantum effect is obvious when the particle size is below 6 nm.

结果表明：二氧化锡粒子尺寸至少小于6nm时，才能出现明显的量子尺寸效应。

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as same as the most nano-size materials, the rutile nano-tio2 has many particular properties, such as surface boundary effect, volume effect, quantum size effect, quantum tunneling effect and so on.

金红石型纳米TiO2，具有纳米材料所具有的许多独特的性能，如表面效应、体积效应、量子尺寸效应、宏观量子隧道效应等。

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compared with their bulk counterparts, the absorption spectral of the obtained cds and cdse nanocrystals are blue-shifted, which is attributed to the quantum size effect.

与相应的体相材料相比，所得CdS和CdSe纳米晶的吸收光谱都发生了明显的蓝移，体现出明显的量子尺寸效应。

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the quantum size effects of agbr semiconductor ultrafine particles

超微半导体AgBr的量子尺寸效应

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