Abstract
Quartz glasses containing ultradisperse particles (with a mean radius of 5 ± 3 nm) of semiconductor compounds CuxS and CuInS2 were synthesized using the sol-gel technology. The line and differential absorption spectra of such glasses were investigated. In the range 600–700 nm, the samples demonstrate absorption bands that are assigned to the lowest-lying energy transition in quantum-size particles. Excitation by laser pulses with a wavelength of 540 nm causes the effect of induced absorption in the range of 500–950 nm. The induced absorption in the samples containing CuxS nanoparticles undergoes relaxation which has a characteristic time of ∼500 psec, and in the samples with CuInS2 nanoparticles it has a two-exponential form with τ1 ≈ 30 psec and τ2>1 nsec.
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Translated from Zhurnal Prikladnoi Spektroskopii, vol. 67, No. 4, pp. 507–511, July–August, 2000.
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Malyarevich, A.M., Posnov, N.N., Yumashev, K.V. et al. Nonlinear optical properties of Cu x S and CuInS2 semiconductor nanoparticles in sol-gel glass. J Appl Spectrosc 67, 699–704 (2000). https://doi.org/10.1007/BF02681307
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DOI: https://doi.org/10.1007/BF02681307