Quantum yield of Eu2+ emission in (Ca1-xSr x)S:Eu light emitting diode converter at 20-420 K

Xia Q, Batentschuk M, Osvet A, Winnacker A, Schneider J (2010)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2010

Journal

Book Volume: 45

Pages Range: 350-352

DOI: 10.1016/j.radmeas.2009.09.010

Abstract

A series of red-emitting light converters Ca1$-$xSrxS:Eu2+, with tunable composition-dependent emission maxima were synthesized and characterized concerning their photoluminescent (PL) properties. X-ray diffraction patterns, photoluminescence spectra, luminosities and quantum yields were compared for phosphors with strontium concentrations varying from 0 to 100%. The maxima wavelength of emission shifts from 663 down to 619~nm, originating from the dependence of Eu2+ 5d state energy on the surrounding crystal field. Upon increasing the temperature from 20 to 420~K, a broadening of emission spectra along with thermal quenching of emission intensity and quantum yield occurs. Satisfying PL properties and their thermal stability demonstrate that the phosphors could be used as light converters in light emitting diodes (LEDs).

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

Albert-Ludwigs-Universität Freiburg Germany (DE)

How to cite

APA:

Xia, Q., Batentschuk, M., Osvet, A., Winnacker, A., & Schneider, J. (2010). Quantum yield of Eu2+ emission in (Ca1-xSr x)S:Eu light emitting diode converter at 20-420 K. Radiation Measurements, 45, 350-352. https://doi.org/10.1016/j.radmeas.2009.09.010

MLA:

Xia, Qi, et al. "Quantum yield of Eu2+ emission in (Ca1-xSr x)S:Eu light emitting diode converter at 20-420 K." Radiation Measurements 45 (2010): 350-352.

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