Quantum size effect on surface photovoltage spectra: Alpha-Fe2O3 nanocrystals on the surface of monodispersed silica microsphere
文献类型：期刊论文
| 作者 | Cheng, K ; He, YP ; Miao, YM ; Zou, BS ; Wang, YG ; Wang, TH ; Zhang, XT ; Du, ZL |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
 |
| 出版日期 | 2006 |
| 卷号 | 110期号:14页码:7259 |
| 关键词 | COLLOIDAL PARTICLES PHOTONIC CRYSTAL NANOPARTICLES GAMMA-FE2O3 SPECTROSCOPY ELECTRON IR DEPENDENCE DYNAMICS OXIDES |
| ISSN号 | 1520-6106 |
| 通讯作者 | Zou, BS (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China. |
| 中文摘要 | A new method for the preparation of Fe2O3 nanoparticle/SiO2 microsphere composites is described, in which fine alpha-Fe2O3 nanocrystals were prepared by forced hydrolysis of FeCl3 aqueous solution. The structure and optical spectra of these alpha-Fe2O3 nanocrystals have been studied. Their visible optical absorption can be enhanced by their adsorptions on the surface Of SiO2 microspheres and thereafter simple packing of these microspheres to the aggregated structures. The size-dependent photogenerated surface photovoltage spectra (SPS) of these composites were studied, and quantum confinement effects of the SPS properties were observed. The transport of photoinduced charges between nanocrystals with intrinsic electronic nature of confined states accounts for this phenomenon. These results are helpful in understanding the relationship among d-d transition and charge-transfer transition in transition metal oxides and find applications in photovoltaic devices. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51732]  |
| 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 | Cheng, K,He, YP,Miao, YM,et al. Quantum size effect on surface photovoltage spectra: Alpha-Fe2O3 nanocrystals on the surface of monodispersed silica microsphere[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(14):7259. |
| APA | Cheng, K.,He, YP.,Miao, YM.,Zou, BS.,Wang, YG.,...&Du, ZL.(2006).Quantum size effect on surface photovoltage spectra: Alpha-Fe2O3 nanocrystals on the surface of monodispersed silica microsphere.JOURNAL OF PHYSICAL CHEMISTRY B,110(14),7259. |
| MLA | Cheng, K,et al."Quantum size effect on surface photovoltage spectra: Alpha-Fe2O3 nanocrystals on the surface of monodispersed silica microsphere".JOURNAL OF PHYSICAL CHEMISTRY B 110.14(2006):7259. |
入库方式： OAI收割
来源：物理研究所
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