CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Tailoring Optical Properties of Silicon Nanowires by Au Nanostructure Decorations: Enhanced Raman Scattering and Photodetection
Chen, RJ; Li, DH; Hu, HL; Zhao, YY; Wang, Y(汪颖); Wong, N; Wang, SJ; Zhang, Y(张益); Hu, J(胡钧); Shen, ZX; Xiong, QH
2012
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume116Issue:7
AbstractMetallic nanoparticles (NPs) decorated semiconductor nanowires (NWs) heterostructures show significant promise in enhanced optical and opto-electrical properties due to the coupling of surface plasmon to nanowires. Here, we demonstrate a galvanic displacement based strategy to achieve in situ nucleation of Au nanoparticles and then postgrowth into higher order Au nanostmctures such as dimers, nanorods, and nanoprisms along the same Si nanowires (SiNWs). The presence of Au nanostructures significantly enhances the optical properties of nanowires. Particularly, a 24 times enhancement of Si Raman scattering signal was achieved with a Au dimer decoration. A Au nanorod aligned in parallel along nanowire strongly enhances the anisotropy of Si Raman scattering, with more than 28 times stronger signal under parallel polarization than that under perpendicular polarization, demonstrating for the first time the surface plasmon enhanced antenna effect. In addition, we demonstrate that surface plasmon enhances photocurrent of SiNW by almost 100%, which is higher than previous reports. Our studies show that SiNWs decorated with metallic nanostructures by in situ galvanic displacement exhibit significant promise toward high efficiency photodetection and light harvesting applications.
Language英语
Funding Project应物所项目组
WOS IDWOS:000301156500009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13309
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Chen, RJ,Li, DH,Hu, HL,et al. Tailoring Optical Properties of Silicon Nanowires by Au Nanostructure Decorations: Enhanced Raman Scattering and Photodetection[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2012,116(7).
APA Chen, RJ.,Li, DH.,Hu, HL.,Zhao, YY.,Wang, Y.,...&Xiong, QH.(2012).Tailoring Optical Properties of Silicon Nanowires by Au Nanostructure Decorations: Enhanced Raman Scattering and Photodetection.JOURNAL OF PHYSICAL CHEMISTRY C,116(7).
MLA Chen, RJ,et al."Tailoring Optical Properties of Silicon Nanowires by Au Nanostructure Decorations: Enhanced Raman Scattering and Photodetection".JOURNAL OF PHYSICAL CHEMISTRY C 116.7(2012).
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