S. Roy et D. Ganguli, WAVELENGTH-SELECTIVE TRANSMISSION IN TRANSITION-METAL-CONTAINING SILICA-GEL MONOLITHS, Materials letters, 16(6), 1993, pp. 352-356
Divalent nickel and cobalt (11 to 40 mol% of equivalent oxide) were in
troduced in sol-gel derived silica gel monoliths. Wavelength-selective
transmission windows were observed in the spectra in each case. The o
rigin and characteristics (maximum transmission, bandwidth as a functi
on of transition metal content) of the transmission windows are discus
sed.