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Van der Kolk, E. (author), De Haas, J.T.M. (author), Bos, A.J.J. (author), Van Eijk, C.W.E. (author), Dorenbos, P. (author)A combined photoconductivity, absorption, and thermoluminescence study was performed to understand the absence of luminescence from Ce3+ in LaAlO3:Ce3+. It is demonstrated that the absence of luminescence is the result of Ce3+ ionization from the 5d excited states, which are all located in the conduction band. Ce3+ ionization is accompanied by...journal article 2007