Analysis of optical properties of Al2O3:Cr3+ polycrystalline transparent red light emmiting ceramics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU137922" target="_blank" >RIV/00216305:26620/19:PU137922 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Analysis of optical properties of Al2O3:Cr3+ polycrystalline transparent red light emmiting ceramics
Original language description
Transparent Cr3+-doped alumina ceramics was prepared by slip casting, followed by pre-sintering in ambient atmosphere and hot isostatic pressing. The effect of dopant concentration on optical (transmission and photoluminescence-PL) properties was studied. Two approaches were used for treatment and comparison of the transmission data, one based on simple total background correction and other based on Rayleigh-Gans-Debye approximation that includes birefringent grain scattering effect. The PL spectra of studied samples exhibit intensive deep red narrow emissions under violet/green light excitation, R-lines (2Eg4A2g transition), observed at 692.5 and 693.8 nm, that are very close to ruby single crystal. The highest emission was achieved at the Cr3+ concentration of 0.4 at. %. The luminescence decay curves exhibit single-exponential behaviour with decay times of 3.6 ms.
Czech name
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Czech description
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Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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