Optical properties of PbSe quantum dots doped in borosilicate glass

Lead Chalcogenide Quantum Dot‐Doped Glasses for Photonic Devices

“…Formation of lead chalcogenide QDs in glasses can be controlled by thermal treatment, doping different amount of rare‐earth ions, precipitation of silver nanoparticles, or various combinations of them. Glass with nominal composition of 50SiO 2 ‐34Na 2 O‐5Al 2 O 3 ‐8ZnO‐2ZnS‐1PbO (mol%) was used as a mother glass . Starting powders were melted in an alumina crucible at 1350°C for 60 min.…”

“…Glasses with lead chalcogenide QDs also can be used for light sources and photonic devices utilizing their unique photoluminescence. For these applications, it is important to control the sizes of QDs precisely to realize the photoluminescence at desired wavelengths . In section II, recent progresses for the controlled formation of lead chalcogenide QDs in glasses will be reviewed and the preliminary attempts for the device fabrication will be introduced in section III.…”

Hydrothermal synthesis and characterization of novel PbSe dendritic structures

“…Over the past few years, various methods, including surfactant aided solid-state reaction, microbial synthesis, sonochemical, electrodeposition and microwave irradiation, radiation, photochemical, solution-based, hydrothermal, solvothermal route, pulse sonoelectrochemical technique, and so on [8][9][10][11][12][13], have been employed to synthesize PbSe nanostructures with various morphologies, such as nanorods, nanotubes, nanowires, nanorings, nanotubes, and other nanocrystals [14][15][16][17][18][19][20][21][22][23].…”

Influence of Intermediate ZnO on the Crystallization of PbSe Quantum Dots in Silicate Glasses

“…Recently, several groups reported their studies on PbSe QDs in silicate glasses. However, some troubles still exist . The ubiquitous problem is that the QDs inside glass matrices generally have much broader size distributions in contrast to those prepared by colloidal syntheses, and precise control over the QDs' crystallization process has been difficult.…”

“…In theoretical aspects, the fundamental mechanisms of nucleation and growth of QDs in glassy hosts have not been well understood. And the crystallization of QDs in glasses was controlled mainly by optimizing temperatures and durations of thermal treatment, whereas little was known about the effects of certain components on the nucleation and growth of QDs . ZnO has been widely used as an intermediate group in the glass industry, generally it exists as a network modifier in glass with the form of [ZnO 6 ], however, if provided with sufficient free‐oxygen, ZnO can get into glass structure as a network former with the form of [ZnO 4 ], thus makes the glass structure more stable.…”