Sg. Romanov et al., OPTICAL-PROPERTIES OF SELF-ASSEMBLED ARRAYS OF INP QUANTUM WIRES CONFINED IN NANOTUBES OF CHRYSOTILE ASBESTOS, Journal of applied physics, 82(1), 1997, pp. 380-385
Three-dimensional arrays of structurally confined InP wire-like nanost
ructures were grown in channels (nanotubes) of a chrysotile asbestos m
atrix by metalorganic chemical vapor deposition, The formation of the
InP compound was confirmed by absorption spectroscopy, X-ray diffracti
on and Raman scattering. It is shown that the density of states around
the band edge increases with the InP loading of the matrix. Photolumi
nescence spectra of the asbestos filled in with InP consist mainly of
two bands: a high energy band which is interpreted to be associated wi
th charge transfer from InP to defect states of the asbestos and a low
energy band which is associated with energy relaxation in the InP dep
osit itself. We show that the optical properties of this material are
dominated by the size and dimensionality of the pore system of the mat
rix for heavy loading and by the semiconductor-to-matrix interface for
light loading of the matrix with InP. (C) 1997 American Institute of
Physics.