title: Visible to infrared low temperature photoluminescence of rare earth doped bismuth germanate crystals.
abstract: In this paper, the influence of a series of rare earth (Eu, Tm, Nd) and Cr ion doping on the optical properties of BGO was investigated by means of photoluminescence (PL) from visible to IR region in the 10-300K temperature range using different types of detectors, namely, photomultiplier tube (PMT), InGaAs (IGA), and Si. Several samples were investigated having dopants concentrations of 0.3wt%Nd, 0.4wt%Tm, 0.06wt% Cr and 3ppm Eu. The PL spectra of the samples showed different luminescence behaviour which is assigned to the 4f intra shell transition from rare earth ions. The temperature dependence of the PL from rare earth doped BGO crystals is also examined.
authors.affiliation: Nigde University, Faculty of Arts and Sciences, Physics Department, Nigde, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Canimoglu
authors.affiliation: Celal Bayar University, Faculty of Arts and Sciences, Department of Physics, 45010 Muradiye, Manisa, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Ayvacikli
authors.affiliation: Celal Bayar University, Faculty of Arts and Sciences, Department of Physics, 45010 Muradiye, Manisa, Turkey.
authors.forename: Y
authors.initials: Y
authors.lastname: Karabulut
authors.affiliation: Ege University, Institute of Nuclear Sciences, 35100 Bornova, İzmir, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Karali
authors.affiliation: Celal Bayar University, Faculty of Arts and Sciences, Department of Physics, 45010 Muradiye, Manisa, Turkey; Physics Department, Faculty of Science, Jazan University, P.O. Box 114, Jazan, Saudi Arabia. Electronic address: cannurdogan@yahoo.com.
authors.forename: N
authors.initials: N
authors.lastname: Can
keywords: Bi(4)Ge(3)O(12); Low temperature; NIR; Photoluminescence; Rare earth