Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 40 checked references that resolve
resolves10.1007/s00340-009-3606-9Visible upconversion and infrared luminescence investigations of Al2O3 powders doped with Er3+, Yb3+ and Zn2+ ions
resolves10.1016/j.snb.2012.01.068Optical temperature sensing through extraordinary enhancement of green up-conversion emissions for Er–Yb–Mo:Al2O3
resolves10.1007/s10971-009-1913-6Yb3+ → Er3+ energy transfer in Al2O3 and temperature characteristic of near-infrared photoluminescence
resolves10.1007/s11433-009-0132-zUp-conversion emissions of Er3+-Yb3+ codoped Al2O3 nanoparticles by the arc discharge synthesis method
resolves10.1007/s11434-008-0267-8Effects of Yb3+ codoping on visible and near infrared emissions of Er3+-Yb3+ codoped Al2O3 powders by the sol-gel method
resolves10.1557/JMR.2008.0399Formation of ultrafine eutectic-like microstructures of various rare earth oxide-Al<sub>2</sub>O<sub>3</sub> systems by use of amorphous phases
resolves10.1117/1.3241987Application to temperature sensor based on near-infrared emissions of <inline-formula><math display="inline" overflow="scroll"><mrow><msup><mi mathvariant="normal">Nd</mi><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>:</mo><msup><mi mathvariant="normal">Er</mi><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>:</mo><msup><mi mathvariant="normal">Yb</mi><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></inline-formula> codoped <inline-formula><math display="inline" overflow="scroll"><mrow><msub><mi mathvariant="normal">Al</mi><mn>2</mn></msub><msub><mi mathvariant="normal">O</mi><mn>3</mn></msub></mrow></math></inline-formula>
resolves10.1364/OE.15.003948Photoluminescence enhancement in Yb^3+:Er^3+co-doped eutectic Al_2O_3: SiO_2 thin films by 980nm excitation
resolves10.7498/aps.57.6604Up-conversion mechanisms of Yb-Er co-doped Al2O3 film and its temperature characteristics
resolves10.7498/aps.54.5445Spectroscopic characteristics of Cr3+:Al2O3 polycrystalline transparent alumina ceramics
resolves10.1016/j.jallcom.2013.07.189Titanium effect on the thermoluminescence and optically stimulated luminescence of Ti,Mg:α-Al2O3 transparent ceramics
resolves10.1002/adfm.201300906Blue–Green Emission in Terbium‐Doped Alumina (Tb:Al<sub>2</sub>O<sub>3</sub>) Transparent Ceramics
resolves10.1016/j.saa.2014.01.014Structural and optical properties of Er3+/Yb3+ doped barium titanate phosphor prepared by co-precipitation method
resolves10.1016/j.matchemphys.2012.12.015Effect of nano-size Al2O3 reinforcement on the mechanical behavior of synthesis 7075 aluminum alloy composites by mechanical alloying
resolves10.1063/1.328785Measurements of Raman intensities and pressure dependence of phonon frequencies in sapphire
resolves10.1007/s00340-012-4970-4Synthesis, characterization, optical absorption, luminescence and defect centres in Er3+ and Yb3+ co-doped MgAl2O4 phosphors
resolves10.1016/S1002-0721(17)60990-6Influence of dopant concentration on the transparent and thermal properties of Nd 2 O 3 -doped alumina translucent ceramics
resolves10.1039/C5CP01874AIncorporation of Zn
<sup>2+</sup>
ions into BaTiO
<sub>3</sub>
:Er
<sup>3+</sup>
/Yb
<sup>3+</sup>
nanophosphor: an effective way to enhance upconversion, defect luminescence and temperature sensing
resolves10.1021/acs.inorgchem.7b02436Energy Transfer Mechanisms and Optical Thermometry of BaMgF<sub>4</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup> Phosphor
resolves10.1016/j.jlumin.2017.09.055Color-tunable emission by adjusting sensitizer (Yb3+) and excitation power of 980 nm in NaGdTiO4:Yb3+/Tm3+/Er3+ phosphors for light emitting diodes
resolves10.1166/sam.2013.1468Upconversion Luminescence Enhancement of Er<SUP>3</SUP><SUP>+</SUP>:Yb<SUP>3</SUP><SUP>+</SUP> Doped Al<SUB>2</SUB>O<SUB>3</SUB> Powder Containing Lu<SUP>3</SUP><SUP>+</SUP>
resolves10.1039/C5RA11888CUpconverting/magnetic: Gd
<sub>2</sub>
O
<sub>3</sub>
:(Er
<sup>3+</sup>
,Yb
<sup>3+</sup>
,Zn
<sup>2+</sup>
) nanoparticles for biological applications: effect of Zn
<sup>2+</sup>
doping
resolves10.1149/1.3367217Co-Doping Effects of Zn<sup>2+</sup> on Upconversion Luminescence of Gd<sub>2</sub>O<sub>3</sub>:Er Nanophosphors
resolves10.1063/1.4927297Effects of vacancies on luminescence of Er-doped 0.93Bi0.5Na0.5TiO3-0.07BaTiO3 ceramics
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