Optical Studies on Europium Doped K 2 SO 4 | Zendy

Kumar V. S. Kishan | Zendy; Sastry S. B. S. | Zendy; Acharyulu B. S. V. S. R. | Zendy

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Optical Studies on Europium Doped K 2 SO 4

Author(s) -

Kumar V. S. Kishan,

Sastry S. B. S.,

Acharyulu B. S. V. S. R.

Publication year - 1989

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221550239

Subject(s) - europium , thermoluminescence , ion , irradiation , fluorescence , doping , analytical chemistry (journal) , emission spectrum , absorption (acoustics) , materials science , divalent , luminescence , population , chemistry , atomic physics , spectral line , physics , optics , optoelectronics , demography , organic chemistry , chromatography , astronomy , sociology , nuclear physics , metallurgy , composite material

Optical absorption (OA), fluorescence, and thermoluminescence are studied on γ‐irradiated K 2 SO 4 :Eu crystals. The OA spectrum shows a prominent peak around 5.33 eV which is identified as due to europium ions in their divalent state (Eu 2+ ). On irradiation, the population of Eu 2+ is found to increase. Fluorescence shows the characteristic Eu 2+ emission around 3.05 eV. The glow curve consists of an intense peak around 365 K with two weaker ones around 415 and 435 K. The emission under all these glow peaks is the same and consists of a single band around 3.06 eV attributable again to the characteristic emission of Eu 2+ ions.

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