Gold nanoparticles deposited on fluorine-doped tin oxide substrates as materials for laser operated optoelectronic devices
Kityk, E. Al-Harbi, M. A. Aziz, M. Oyama, A. M. El-Naggar, N. AlZayed, A. Wojciechowski, I. V. . 2013
We have discovered occurrence of strong narrow spectral lines in gold nanoparticles deposited on fluorine-doped tin oxide substrates at wavelengths 410, 440 and 550 nm under influence of 808 nm wavelength laser illumination with power about 200 mW. These lines appear just after the 1 s of illumination and are almost unchanged during all the remaining time of illumination. Such lines are absent for the other content of gold nanoparticlesmodified substrates. So a principle role here is played by the inter-particle distances. The relaxation process is continued during 8–10 h and the samples return to their initial states. The occurrence of the such narrow spectral lines may be a consequence of the two-photon absorption related with the corresponding electron–phonon interactions due to specific interactions between the plasmons and the phonon subsystem and the free carriers
We have used the pulsed laser deposition (PLD) technique followed by post-annealing process with magnesium vapor at 700 ◦C for 30 min to grow a high-quality CrO2/MgB2 bilayer prepared on Al2O3 (…
We have discovered occurrence of strong narrow spectral lines in gold nanoparticles deposited on fluorine-doped tin oxide substrates at wavelengths 410, 440 and 550 nm under influence of 808 nm…
We present a complex fluorescence study of a series of gadolinium oxide polycrystalline powders singly, doubly and triply doped with trivalent rare earth ions (Er3+, Tb3+, and Dy3+), to explore a…