Continuous photoluminescence, time resolved photoluminescence and optically detected magnetic resonance measurements of PbI2 nanometer-sized particles, embedded in SiO2 films

Synthesis of PbI2 nanoparticles by laser ablation in methanol

“…The reported results revealed particle size, shape and distribution that affecting dependence on the preparation technique [7,8]. Combined Langmuir-Blodgett and molecular deposition technique, surfactant-assisted hydrothermal method, colloidal, sol-gel, vapor deposition, reverse micelles are some methods; adopted to prepare PbI 2 nanoparticles [5,[9][10][11]. To date, synthesis of pbI 2 nanoparticles by laser ablation in liquid has not been reported.…”

Comparative studies of optical absorption, photoluminescence and EPR spectra of PbMnI2 bulk layers and nanocrystals

“…This emission band is associated with a different defect states. E. Lifshitz et al [10,25] observed an emission band in PL spectra for platelet-like nanocrystals PbI 2 in this energy region and identified this peak with donor and acceptor sites at the interior part of the nanoparticles. N. Preda et al [26] observed an emission band with simple energy position in PL spectra for micrometric crystalline powder of PbI 2 obtained by mechanical crumbling of bulk crystals.…”

“…The obtained 2H-polytype single crystal samples are characterized by clearlayered structures and very thin layers with the thickness up to 100 nm can be prepared by using the so-called "scotch tape method". Nanoparticles of 2 x x 1 I Mn Pb  with x from the above range were prepared by embedding them into polyvinylalcohol (PVA) matrix using cooling the boiling saturated aqueous Pb 1-x Mn x I 2 solution to room temperature [10,21]. Originally, monocrystalline or polycrystalline Pb 1-x Mn x I 2 was crushed to powder using the ball milling technique.…”

“…Recently, a number of research works have been reported on the synthesis of the low-dimensional structures of PbI 2 by chemical and physical methods with different shapes. For example, colloidal [7][8][9], solgel [10,11], reverse micells [12], hydrothermal techniques [13,14] and so on were employed for growth of the PbI 2 nanostructures in the form of nanoplates, nanodisks, nanorods, nanodots, nanobelts and nanobelts bundles. All these structures demonstrate anisotropy of properties and a strong exciton confinement.…”

Exciton-phonon interaction in PbI2 revealed by Raman and photoluminescence studies using excitation light overlapping the fundamental absorption edge

“…The presence of these bands in the PL spectrum of PbI 2 in the form of nanometer-sized particles, curve c in Figure 5B, reveals the role of the surface in the trapping and radiative recombination of electrons and holes formed by optical excitation [31][32][33]. Different from the crystalline samples with or without defects or the samples in the form of micrometric powders, these samples are obtained by the rapid cooling of the molten PbI 2 , which are characterized by a very weak PL, even in the excitonic spectral range, as is observed with the curve d in Figure 5B.…”