Multicolored Vertical Silicon Nanowires

被引:326
作者
Seo, Kwanyong [1 ]
Wober, Munib [2 ]
Steinvurzel, Paul [1 ]
Schonbrun, Ethan [1 ]
Dan, Yaping [1 ]
Ellenbogen, Tal [1 ]
Crozier, Kenneth B. [1 ]
机构
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
[2] Zena Technol, Topsfield, MA 01983 USA
基金
美国国家科学基金会;
关键词
Vertical silicon nanowire; waveguiding; selective absorption; color filtering; photodetection; SOLAR-CELLS; ARRAYS; DENSITY; NANOSTRUCTURES; COLOR;
D O I
10.1021/nl200201b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate that vertical silicon nanowires take on a surprising variety of colors covering the entire visible spectrum, in marked contrast to the gray color of bulk silicon. This effect is readily observable by bright field microscopy, or even to the naked eye. The reflection spectra of the nanowires each show a dip whose position depends on the nanowire radii. We compare the experimental data to the results of finite difference time domain simulations to elucidate the physical mechanisms behind the phenomena we observe. The nanowires are fabricated as arrays, but the vivid colors arise not from scattering or diffractive effects of the array, but from the guided mode properties of the individual nanowires. Each nanowire can thus define its own color, allowing for complex spatial patterning. We anticipate that the color filter effect we demonstrate could be employed in nanoscale image sensor devices.
引用
收藏
页码:1851 / 1856
页数:6
相关论文
共 21 条
[1]  
[Anonymous], ABSORPTION SCATTERIN
[2]   Tuning the Color of Silicon Nanostructures [J].
Cao, Linyou ;
Fan, Pengyu ;
Barnard, Edward S. ;
Brown, Ana M. ;
Brongersma, Mark L. .
NANO LETTERS, 2010, 10 (07) :2649-2654
[3]   Spectrally coded optical data storage by metal nanoparticles [J].
Ditlbacher, H ;
Krenn, JR ;
Lamprecht, B ;
Leitner, A ;
Aussenegg, FR .
OPTICS LETTERS, 2000, 25 (08) :563-565
[4]  
Edwards D.F., 1985, Handbook of optical constants of solids
[5]   Light Trapping in Silicon Nanowire Solar Cells [J].
Garnett, Erik ;
Yang, Peidong .
NANO LETTERS, 2010, 10 (03) :1082-1087
[6]   Chemistry and physics in one dimension: Synthesis and properties of nanowires and nanotubes [J].
Hu, JT ;
Odom, TW ;
Lieber, CM .
ACCOUNTS OF CHEMICAL RESEARCH, 1999, 32 (05) :435-445
[7]   Fabrication of silicon nanowire arrays with controlled diameter, length, and density [J].
Huang, Zhipeng ;
Fang, Hui ;
Zhu, Jing .
ADVANCED MATERIALS, 2007, 19 (05) :744-+
[8]   Structural colour printing using a magnetically tunable and lithographically fixable photonic crystal [J].
Kim, Hyoki ;
Ge, Jianping ;
Kim, Junhoi ;
Choi, Sung-eun ;
Lee, Hosuk ;
Lee, Howon ;
Park, Wook ;
Yin, Yadong ;
Kwon, Sunghoon .
NATURE PHOTONICS, 2009, 3 (09) :534-540
[9]   Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies [J].
Murray, CB ;
Kagan, CR ;
Bawendi, MG .
ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 :545-610
[10]   Detection, stimulation, and inhibition of neuronal signals with high-density nanowire transistor arrays [J].
Patolsky, Fernando ;
Timko, Brian P. ;
Yu, Guihua ;
Fang, Ying ;
Greytak, Andrew B. ;
Zheng, Gengfeng ;
Lieber, Charles M. .
SCIENCE, 2006, 313 (5790) :1100-1104