ENERGY TRANSFER PROCESS BETWEEN <TEX>$Ce^{3+}$</TEX> AND <TEX>$Tb^{3+}$</TEX> IN LaOCl HOST

Kim, Taesam; Sung, Hakje; Kim, Kunhan; Ha, Younggu; Chang, Joowhan; Song, Sunho

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.6, No.3

PubReader Citation

ENERGY TRANSFER PROCESS BETWEEN $Ce^{3+}$ AND $Tb^{3+}$ IN LaOCl HOST

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1993, v.6 no.3, pp.319-328

Kim, Taesam
Sung, Hakje
Kim, Kunhan
Ha, Younggu
Chang, Joowhan
Song, Sunho

Kim, T., Sung, H., Kim, K., Ha, Y., Chang, J., & Song, S. (1993). ENERGY TRANSFER PROCESS BETWEEN <TEX>$Ce^{3+}$</TEX> AND <TEX>$Tb^{3+}$</TEX> IN LaOCl HOST. , 6(3), 319-328.

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Abstract

Energy transfer process between $Tb^{3+}$ and $Ce^{3+}$ has been studied in LaOCl host. The energy absorbed by $Ce^{3+}$ transfers to $Tb^{3+}$ which has levels emitting strong fluorescence. The probability of energy transfer depends strongly on the concentration or the distance of activator ions. While the energy transferred on $Tb^{3+}$ emits from $^5D_3$ level at low concentration of $Ce^{3+}$, the energy goes back to $Ce^{3+}$(Back Transfer) and then emits from low levels of $Ce^{3+}$ and $Tb^{3+}$ at the high concentration. The Back Transfer process has been identified by the experiment with varying the concentration of the activator, $Ce^{3+}$. The relaxation is more effective if $Ce^{3+}$ intermediates than if not.