The effect of UV irradiation on the refractive index modulation in photo-thermo-refractive glasses: Mechanisms and application

Chernakov, Dmitry I.; Сидоров, А. И.; Stolyarchuk, M.V.; Kozlova, Darya; Krykova, Victoria; Никоноров, Н. В.

doi:10.1016/j.optmat.2017.12.036

Cited by 4 publications

(1 citation statement)

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“…The released electrons, in turn, are trapped by silver ions, in accordance with Equation , thus forming neutral Ag 0 species that can aggregate further into neutral or charged sub‐nanometer silver molecular clusters (SMCs) containing only a few ions/atoms. Moreover, growth of a certain amount of charged SMCs occurs during the PTR glass synthesis and UV irradiation of the PTR glass results in reducing charged SMCs thus providing appearance of neutral SMCs ( Figure a).…”

Section: Introductionmentioning

confidence: 99%

Photo‐Thermo‐Refractive Glasses Doped with Silver Molecular Clusters as Luminescence Downshifting Material for Photovoltaic Applications

Sgibnev

Cattaruzza

Dubrovin

et al. 2018

Part & Part Syst Charact

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Silver nanostructures, including molecular clusters and plasmonic nanoparticles, attract much attention due to their unique optical properties and potential applications in various fields. Glasses doped with silver molecular clusters are known to possess bright luminescence under UV excitation, which opens up prospects of using the glasses as solar spectral converters to overcome poor spectral response for most of photovoltaic cells in the short‐wavelength region. In this study, silver molecular clusters are formed in photo‐thermo‐refractive glass matrix both by UV irradiation and by Na+↔Ag+ ion exchange and optically characterized. Photo‐thermo‐refractive glasses doped with silver molecular clusters, independently on silver introduction method, are shown to demonstrate broad absorption in the UV, intense white emission under excitation at 360 nm, and high photoluminescence quantum yield that meet requirements for luminescence downshifting materials. Despite this, only photo‐thermo‐refractive glass with silver molecular clusters uniformly distributed in the glass volume enhances the output power of a silicon photovoltaic cell, thus showing the potential for future application of photo‐thermo‐refractive glasses in photovoltaics, particularly in case of further experiments.

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Section: Introductionmentioning

confidence: 99%