0000000000217529

AUTHOR

Saulius Nargelas

showing 2 related works from this author

Excitation Transfer Engineering in Ce-Doped Oxide Crystalline Scintillators by Codoping with Alkali-Earth Ions

2018

This work has been supported by the European Social Fund Measure No. 09.3.3-LMT-K-712 activity Improvement of Researchers Qualification by Implementing the World-Class R&D Projects, and by grant #14.W03.31.0004 of the Russian Federation Government. Authors are grateful to CERN Crystal Clear Collaboration and COST Action TD1401 "Fast Advanced Scintillator Timing (FAST)" for support of collaboration.

multicomponent garnetsMaterials scienceInorganic chemistryexcitation transferscintillators02 engineering and technologyScintillator7. Clean energy01 natural sciencesDoped oxideIonfree carrier0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Materials ChemistryElectrical and Electronic EngineeringAlkaline earth metal010308 nuclear & particles physicsmulticomponent garnetfree carriersSurfaces and Interfaces021001 nanoscience & nanotechnologyCondensed Matter PhysicsFree carrierSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialsscintillator0210 nano-technologyExcitationphysica status solidi (a)
researchProduct

Carrier dynamics in epilayers and nanocolumns of ternary AlGaN with a tunable bandgap

2012

We apply several optical time-resolved techniques to investigate the dynamics of excess carriers in AlxGa1−xN nanocolumns grown on (111) silicon substrates and in thick AlxGa1−xN epitaxial layers deposited on sapphire. We demonstrate that carrier lifetime drops in nanocolumns by several times if compared to epilayers with similar Al content; in addition, recombination rate displays a strong nonlinearity on excitation. On the other hand, carrier localization effects observed in the epilayers completely disappear in nanocolumns.

Materials scienceSiliconbusiness.industryBand gapchemistry.chemical_elementCarrier lifetimeEpitaxychemistrySapphireOptoelectronicsTernary operationCarrier dynamicsbusinessExcitationIOP Conference Series: Materials Science and Engineering
researchProduct