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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3210
Title: Quantum efficiency of non-radiative energy transfer from Eu3+ → Pr3+ in calibo glass
Authors: Tripathi H.B.
Agarwal A.K.
Kandpal H.C.
Belwal R.
Published in: Solid State Communications
Abstract: Study of energy transfer from optically excited Eu3+ to Pr3+ has been carried out in calibo glass. Probabilities (Pda) and efficiencies (ηT) of energy transfer from Eu3+ to Pr3+ have been calculated from the life time and emission intensity of Eu3+ + Pr3+. At low acceptor concentrations, Pda varies linearly with Ca showing migration of energy among donors. At high acceptor concentrations, Pda depends linearly on (Ca + Cd)2, which is consistent with Fong and Diestler theory of dipole-dipole mechanism of energy transfer. At low temperatures the probability and the efficiency decrease due to increase in the emission intensity and life time, which suggests that at room temperature the energy is transferred to lattice by donor lowering life time and intensity. At high temperatures no emission from higher levels of donor is obtained which suggests blurring out of energy levels in glassy matrix. © 1978.
Citation: Solid State Communications (1978), 28(9): 807-810
URI: https://doi.org/10.1016/0038-1098(78)91350-9
http://repository.iitr.ac.in/handle/123456789/3210
Issue Date: 1978
ISSN: 381098
Author Scopus IDs: 7005705857
57198123728
7003383488
24545235300
Author Affiliations: Tripathi, H.B., Department of Physics, D.S.B. University College, Naini Tal, India
Agarwal, A.K., Department of Physics, D.S.B. University College, Naini Tal, India
Kandpal, H.C., Department of Physics, D.S.B. University College, Naini Tal, India
Belwal, R., Department of Physics, D.S.B. University College, Naini Tal, India
Corresponding Author: Tripathi, H.B.; Department of Physics, D.S.B. University College, Naini Tal, India
Appears in Collections:Journal Publications [CY]

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