Polymorph phosphor SrSi2O2N2:Eu2 optoelectronic properties for highly efficient LED: ab-initio calculations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F17%3A43950415" target="_blank" >RIV/49777513:23640/17:43950415 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.mtcomm.2017.10.003" target="_blank" >http://dx.doi.org/10.1016/j.mtcomm.2017.10.003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mtcomm.2017.10.003" target="_blank" >10.1016/j.mtcomm.2017.10.003</a>
Alternative languages
Result language
angličtina
Original language name
Polymorph phosphor SrSi2O2N2:Eu2 optoelectronic properties for highly efficient LED: ab-initio calculations
Original language description
A doped europium polymorph based on phosphor with a structure of SrSi2O2N2 was investigated using the density functional theory as implemented in the full potential linear augmented plane wave method. The exchange correlation was described within the generalized gradient approximation added to the optimized effective Hubbard parameter. The optoelectronic properties were reported to explore the possibility to use SrSi2O2N2:Eu2+ for light-emitting diodes (LED) devices. The electronic band gap was reduced from the parent SrSi2O2N2, 6.646 eV to 4.66 eV when europium was incorporated and it is a direct band gap. The densities of states have shown the role of europium and its f-orbitals in tuning the band gap. Optical properties, such as optical reflectivity, refractive index and electron energy loss, were deduced from the dielectric function for radiation up to 15 eV. The present calculations suggest clearly that SrSi2O2N2:Eu2 is a promising compound for LEDs devices.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Today Communications
ISSN
2352-4928
e-ISSN
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Volume of the periodical
13
Issue of the periodical within the volume
December 2017
Country of publishing house
CH - SWITZERLAND
Number of pages
6
Pages from-to
263-268
UT code for WoS article
000417445700030
EID of the result in the Scopus database
2-s2.0-85033600867