標題: | Interfacial Polar-Bonding-Induced Multifunctionality of Nano-Silicon in Mesoporous Silica |
作者: | Huang, Jung Y. Shieh, Jia M. Kuo, Hao C. Pan, Ci L. 光電工程學系 Department of Photonics |
公開日期: | 10-七月-2009 |
摘要: | The optoelectronic response of a material governs its suitability for a wide range of applications, from photon detection to photovoltaic conversion. To conquer the material limitations and achieve improved optoelectronic responses, nanotechnology has been employed to arranges subunits with specific size-dependent quantum mechanical properties in a hierarchically organized structure. However, building a functional optoelectronic system from nano-objects remains a formidable challenge. In this paper, the fabrication of a new artificially engineered optoelectronic material by the preferential growth of silicon nanocrystals on the bottom of the pore-channels of mesoporous silica is reported. The nanocrystals form highly stable interface structures bonded on one side; these structure show strong electron-phonon coupling and a ferroelectric-like hysteretic switching property. A new class of multifunctional materials is realized by invoking a concept that employs semiconductor nanocrystals for optical sensing and utilizes interfacial polar layers to facilitate carrier transport and emulate ferroelectric-like switching. |
URI: | http://dx.doi.org/10.1002/adfm.200801336 http://hdl.handle.net/11536/6969 |
ISSN: | 1616-301X |
DOI: | 10.1002/adfm.200801336 |
期刊: | ADVANCED FUNCTIONAL MATERIALS |
Volume: | 19 |
Issue: | 13 |
起始頁: | 2089 |
結束頁: | 2094 |
顯示於類別: | 期刊論文 |