The energy transfer in irradiated dielectric thin film structures with CdS and CdSe nanocrystals

Гончарова, О. В.; Калинов, В. С.; Войтович, А. П.

doi:10.1016/j.radmeas.2004.01.015

Cited by 13 publications

(17 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This points to a more substantial improvement of the conditions in the nanocrystals for formation of the F 3 + -CC in comparison with the conditions of formation of the F 2 -CC. Preliminary interpretation of the results presented in this work and obtained earlier [5,[8][9][10] may be as follows. Under the action of γ-radiation, defects appear in lithium fluoride and, first and foremost, the Frenkel defect, which is of interest to us: the haloid ion (fluorine in the case of LiF) shifted from the lattice site into the interstitial position (interstitial (i)) and the positively charged vacancy F 1 + corresponding to this ion.…”

supporting

confidence: 80%

“…We studied the characteristics of absorption and luminescence of γ-irradiated thin-film nano-sized structures containing c-oriented cubic nanocrystals of LiF of diameter d + 100 nm [9] and multilayer periodic heterostructures LiF/CaF 2 with a period of 150 and 300 nm [10]. In comparison with the LiF crystals that are γ-colored under identical conditions, the nano-sized structures based on lithium fluoride have the following characteristic features.…”

mentioning

confidence: 99%

See 1 more Smart Citation

The Extended Surface as a Factor Forming Distinctive Features of Nanodimensional Media

2005

View full text Add to dashboard Cite

535.853.4 As a result of studying thin-film nano-sized media, it is shown that the extended surface exerts a substantial influence on their distinctive properties. It has been established that, by using special methods to obtain nanosized media under certain conditions, it is possible to form crystal structures with a high concentration of defects of a prescribed type in the near-surface layers of nanocrystals. The correlations found between the conducting and optical properties of thin-film nano-sized structures are an additional factor that extends the capabilities of controlling their characteristics with a view toward developing miniature effective radiation sources, elements of modulation of laser radiation, dosimeters, and components of thin-film solar cells.

show abstract

supporting

confidence: 80%

mentioning

confidence: 99%

The Extended Surface as a Factor Forming Distinctive Features of Nanodimensional Media

2005

View full text Add to dashboard Cite

show abstract

“…Characteristic 1-2 ps decay of the shift confirms the metal clusters nature of the effect [18]. Maximal NLO effects observed in nanocrystals are increased with size reduction and have been enhanced by extra excitation power, pulse durability [14,17,18], γ-irradiation [21]. The effects could be explained by the accumulation of the colloids and free electrons at the boundaries of nanocrystals.…”

Section: Contributedmentioning

confidence: 58%

“…High-reflectivity and transmissivity bands are provided by the LiF/CaF 2 structures. Spectral positions of the bands were not changed after γ-irradiation but can be shifted to short-wavelength region by increasing the angle of incidence of light [14,21].…”

Section: Structures Of 150-10 Nm Nanolayersmentioning

confidence: 93%

Thin‐film layers and multilayer nano‐structures with controllable properties

Гончарова

Gremenok

Kravchenko

et al. 2009

Phys. Status Solidi (c)

View full text Add to dashboard Cite

Correlations between the electrical and optical properties of the experimental periodical multilayers and reference thin film layers with defined microstructure have been investigated. The results indicate that thin film multilayers composed of nanolayers with thicknesses 150–10 nm might be suggested as low‐cost materials with controllable microstructure and properties. High‐quality multilayer structures with dielectric and semiconductor nanocrystals prepared by thermal evaporation show properties, which is related to high‐quality nanocrystals, but at the same time depends strongly on the defect content, especially as far as their 1–2 ps nonlinearities are concerned. Critical factors are nanocrystal purity and metal excess collection in their boundaries regions. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

“…They offer the advantages of compatibility with amorphous and crystalline substrates, the possibility to grow multi-layered structures of different materials and functionalise their emission properties, like in coloured LiF film-based fully dielectric optical microcavities [28], and the control of dopants concentrations by versatile preparation techniques [29]. Focusing on irradiation methods, they allow to directly fabricate thin coloured layers also by using energetic radiation.…”

Section: Toward Control Of Point Defects In Thin Filmsmentioning

confidence: 99%

Toward control of point defects in lithium fluoride thin layers

Montereali¹,

Bonfigli²,

Marolo³

et al. 2007

Phys. Status Solidi (c)

View full text Add to dashboard Cite

PACS 61.72. Ji, 68.55.Ln, 78.20.Ci Point defect formation and stabilization properties, as well as their peculiar spectroscopic characteristics, locally modify the optical properties of insulating materials. Thin layers containing high concentrations of colour centres, hosted in a LiF single crystal and/or a polycrystalline matrix, offer the opportunity to develop innovative light-emitting photonic devices. Control of all the critical parameters should be required on spatial dimension comparable with the optical wavelengths. Recent developments in laser technologies, electron and particles beam methods, and novel photon sources, have opened a wide range of opportunities. An overview of the most significant advances in this field is provided, with particular emphasis on colour-centre LiF-based innovative miniaturised light sources, optical amplifiers and lasers.

show abstract

The energy transfer in irradiated dielectric thin film structures with CdS and CdSe nanocrystals

Cited by 13 publications

References 6 publications

The Extended Surface as a Factor Forming Distinctive Features of Nanodimensional Media

The Extended Surface as a Factor Forming Distinctive Features of Nanodimensional Media

Thin‐film layers and multilayer nano‐structures with controllable properties

Toward control of point defects in lithium fluoride thin layers

Contact Info

Product

Resources

About