In this paper a new approach for directly organizing single-walled carbon nanotubes (SWCNTs) onto a silicon (100) surface by the surface condensation reaction with hydroxyl terminated silicon is presented. X-ray photoelectron spectra, Raman spectroscopy and atomic force microscopy show that the shortened SWCNTs have been organized successfully on silicon. The optical properties of SWCNT array exhibit strong fluorescence in the visible wavelength range from 650-800 nm. The fluorescence can be attributed to the coupling effects between attached SWCNTs and silicon substrate.© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.