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Plokker, M.P. (author), Vlaar, S.A. (author), Bakx, A.H.J. (author), van der Kolk, E. (author), Dorenbos, P. (author), Hintzen, H.T.J.M. (author)The luminescence properties of Tm2+-doped BaCl2 with an orthorhombic structure have been studied as a function of temperature and compared to other Tm2+-doped chlorides. In addition to the 2F5/2 → 2F7/2 (4f13 → 4f13) line emission, two 4f125d1 → 4f13 band emissions are observed at 20 K that can be ascribed to the spin-allowed (3H6,5d1)S=1/2 →...journal article 2023
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Plokker, M.P. (author), van der Knijff, I.C. (author), de Wit, A.V. (author), Voet, B. (author), Woudstra, T. (author), Khanin, V. (author), Dorenbos, P. (author), van der Kolk, E. (author)The prospect of using Tm<sup>2+</sup>-doped halides for luminescence solar concentrators (LSCs) requires a thorough understanding of the temperature dependent Tm<sup>2+</sup> excited states dynamics that determines the internal quantum efficiency (QE) and thereby the efficiency of the LSC. In this study we investigated the dynamics in CaX<sub...journal article 2021
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Photoluminescence and excited states dynamics of Tm2+-doped CsCa(Cl/Br)3 and CsCa(Br/I)3 perovskitesPlokker, M.P. (author), Biner, D. A. (author), Dusoswa, N. (author), Dorenbos, P. (author), Krämer, K. W. (author), van der Kolk, E. (author)In this study, we systematically vary the Cl/Br and Br/I ratios in CsCaX<sub>3</sub>:Tm<sup>2+</sup> (X = Cl, Br, I) and hereby gradually shift the positions of the Tm<sup>2+</sup> 4f<sup>12</sup>5d<sup>1</sup>-levels as relative to the two 4f<sup>13</sup> levels. At low temperatures up to five distinct Tm<sup>2+</sup> 4f<sup>12</sup>5d<sup>1...journal article 2021
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Budde, B (author), Luo, H. (author), Dorenbos, P. (author), van der Kolk, E. (author)In this work it is shown that CaZnOS:Eu<sup>2+</sup> has no Eu<sup>2+</sup> emission even at low temperature. The observed and earlier reported red emission originates from a CaS:Eu<sup>2+</sup> impurity phase. By means of washing the as-prepared samples with diluted nitride acid, we were able to remove the CaS impurity phase and study the...journal article 2017
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- Andriessen, J. (author), van der Kolk, E. (author), Dorenbos, P. (author) journal article 2007
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- van der Kolk, E. (author), Dorenbos, P. (author), van Eijk, C.W.E. (author), Basun, S.A. (author), Imbusch, G.F. (author), Yen, W.M. (author) journal article 2005
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- van der Kolk, E. (author), Dorenbos, P. (author), de Haas, J.T.M. (author), van Eijk, C.W.E. (author) journal article 2005
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- van der Kolk, E. (author), Dorenbos, P. (author), Vink, A.P. (author), Perego, R.C. (author), van Eijk, C.E.W. (author), Lakshmanan, A.R. (author) journal article 2001