No 1, Vol. 4, 2001 
 

Sb-ASSISTED AgI NANOPARTICLE GROWTH IN THIN FILMS

P. Senthil Kumar, Swati Ray and C.S. Sunandana

School of Physics, University of Hyderabad,
Hyderabad 500 046 INDIA

Abstract

The growth of Agl nanoparticles by iodization of Ag1-xSbx thin films under ambient conditions has been investigated. Mechanically well ground mixtures of Ag and Sb were thermally evaporated onto microscopic glass slides. They were subsequently iodized at ambient temperature in the dark and characterized by XRD, SEM and optical measurements. Preliminary results infer that the addition of Sb favors the island growth of AgI, but greatly retards the rate of AgI particle growth, resulting in nanometric sized AgI particles. 5% Sb doped Ag films with optimal thickness (~ 200 Å) are found to be ideal for the formation and long term stabilization of γ-Agl thin films. Sb also plays a crucial role in controlling the exciton formation process.

full paper (pdf, 184 Kb)