Growth of nanowire superlattice structures for nanoscale photonics and electronics

Mark S. Gudiksen, Lincoln J. Lauhon, Jianfang Wang, David C. Smith, Charles M. Lieber

Research output: Contribution to journalArticlepeer-review

2467 Scopus citations

Abstract

The assembly of semiconductor nanowires and carbon nanotubes into nanoscale devices and circuits could enable diverse applications in nanoelectronics and photonics. Individual semiconducting nanowires have already been configured as field-effect transistors, photodetectors and bio/chemical sensors. More sophisticated light-emitting diodes (LEDs) and complementary and diode logic devices have been realized using both n-and ptype semiconducting nanowires or nanotubes. The n-and p-type materials have been incorporated in these latter devices either by crossing p-and n-type nanowires or by lithographically defining distinct p-and n-type regions in nanotubess, although both strategies limit device complexity. In the planar semiconductor industry, intricate n- and p-type and more generally compositionally modulated (that is, superlattice) structures are used to enable versatile electronic and photonic functions. Here we demonstrate the synthesis of semiconductor nanowire superlattices from group III-V and group IV materials. (The superlattices are created within the nanowires by repeated modulation of the vapour-phase semiconductor reactants during growth of the wires.) Compositionally modulated superlattices consisting of 2 to 21 layers of GaAs and GaP have been prepared. Furthermore, n-Si/p-Si and n-InP/p-InP modulation doped nanowires have been synthesized. Single-nanowire photoluminescence, electrical transport and electroluminescence measurements show the unique photonic and electronic properties of these nanowire superlattices, and suggest potential applications ranging from nano-barcodes to polarized nanoscale LEDs.

Original languageEnglish (US)
Pages (from-to)617-620
Number of pages4
JournalNature
Volume415
Issue number6872
DOIs
StatePublished - Feb 7 2002

ASJC Scopus subject areas

  • General

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