Exciton and donor binding energies in quantum-well wires and quantum dots a fractional-dimensional space approach
文献类型：期刊论文
| 作者 | Li, H ; Kong, XJ |
| 刊名 | CHINESE PHYSICS
 |
| 出版日期 | 2004 |
| 卷号 | 13期号:5页码:759 |
| 关键词 | HYDROGENIC IMPURITY STATES WANNIER EXCITONS MODEL |
| ISSN号 | 1009-1963 |
| 通讯作者 | Kong, XJ: Chinese Acad Sci, Inst Phys, Natl Lab Magnetism, Beijing 100080, Peoples R China. |
| 中文摘要 | The wide-gap semiconductor TiO2 nanoparticles with and without dye sensitization have been studied by small angle x-ray scattering using synchrotron radiation. Surface properties of the colloidal TiO2 nanoparticles have been analysed in terms of the surface fractal dimensions (D), showing that D, changes from 3.25 to 2.34 when TiO2 nanoparticles are sensitized by ATRA (all-trans-retinoic acid), which reveals that the surface of the particles become relatively smooth after dye sensitization. The size distribution of gyration radius of TiO2 nanoparticles in the colloids M(R-g) has been successfully determined by the Shull-Roess method. The main peak of M(R-g) for the unsensitized TiO2 colloid is located at 2.1nm, corresponding to a spherical diameter of 5.4nm, and this value for the ATRA sensitized TiO2 increases to 2.4nm, indicating a spherical diameter of 6.4nm. Such a size enlargement of TiO2 nanoparticles suggests that there is a coating of ATRA on the TiO2 surface, supporting the view that a monolayer of the dye has been attached to the surface of the TiO2 nanoparticle. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37744]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li, H,Kong, XJ. Exciton and donor binding energies in quantum-well wires and quantum dots a fractional-dimensional space approach[J]. CHINESE PHYSICS,2004,13(5):759. |
| APA | Li, H,&Kong, XJ.(2004).Exciton and donor binding energies in quantum-well wires and quantum dots a fractional-dimensional space approach.CHINESE PHYSICS,13(5),759. |
| MLA | Li, H,et al."Exciton and donor binding energies in quantum-well wires and quantum dots a fractional-dimensional space approach".CHINESE PHYSICS 13.5(2004):759. |
入库方式： OAI收割
来源：物理研究所
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