Searched for: author%3A%22Dorenbos%2C+P.%22
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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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Plokker, 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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Dorenbos, P. (author)
The trends in electronic structure of Bi3+ and Bi2+ as luminescent dopant in wide bandgap inorganic compounds and that of pure Bicompounds for photocatalytic splitting of water are explored by determination of vacuum referred electron binding energies. Spectroscopic data combined with the chemical shift model from the luminescence field and...
journal article 2021
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Dorenbos, P. (author)
Upon his retirement from science Blasse wrote a paper (Blasse, J. Lumin. 72-74 (1997) 129) addressing unsolved problems in explaining luminescence phenomena of classical phosphors. He used the metaphor of Pandora's box. A box full of disaster that should remain closed. Yet, Blasse did open that box and therewith spread the unsolved problems...
journal article 2021
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van Aarle, C. (author), Krämer, Karl W. (author), Dorenbos, P. (author)
The feasiblity of using Yb<sup>2+</sup> as a scintillation sensitiser for CsBa<sub>2</sub>I<sub>5</sub>:Sm<sup>2+</sup> near-infrared scintillators has been assessed. CsBa<sub>2</sub>I<sub>5</sub> samples with concentrations ranging from 0.3% to 2% Yb<sup>2+</sup> and 0–1% Sm<sup>2+</sup> have been studied. The scintillation properties have...
journal article 2021
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Malkamäki, Marja (author), bos, A.J.J. (author), Dorenbos, P. (author), Lastusaari, Mika (author), Rodrigues, Lucas C.V. (author), Swart, Hendrik C. (author), Hölsä, Jorma (author)
BaAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup> is related, both by structure and luminescence, to one of the best persistent luminescent phosphors, SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup>. At room temperature (RT), the green persistent emission of BaAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+<...
journal article 2020
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Zhou, Rongfu (author), Ma, Fengkai (author), Su, Fang (author), Ou, Yiyi (author), Qi, Zeming (author), Zhang, Jianhui (author), Huang, Yan (author), Dorenbos, P. (author), Liang, Hongbin (author)
RbBaPO4:Eu2+ phosphors have been prepared by a high-temperature solid-state reaction method, and the structure was determined by Rietveld refinement based on powder X-ray diffraction (P-XRD) data. Their VUV-UV-vis photoluminescence properties are systematically investigated with three objectives: (1) based on low-temperature spectra, we...
journal article 2020
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Lyu, T. (author), Dorenbos, P. (author)
Guided by vacuum referred binding energy (VRBE) diagrams, both the trapping and detrapping processes of electrons and holes are explored in the bismuth and lanthanide-doped LiRE(Si,Ge)O<sub>4</sub> (RE = Y, Lu) family of compounds. The Tm<sup>3+</sup> electron trap has been combined with the deep hole traps of Ln<sup>3+</sup> (Ln = Ce, Tb, or...
journal article 2020
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Wolszczak, W.W. (author), Krämer, K. W. (author), Dorenbos, P. (author)
Recently, we proposed a concept for a new class of near infrared (NIR) scintillators by employing efficient Eu<sup>2+</sup> → Sm<sup>2+</sup> energy transfer. In this article we investigate the optical spectroscopy of Sm<sup>2+</sup> in BaBrI, CsSrI<sub>3</sub>, and CsBa<sub>2</sub>I<sub>5</sub> halide hosts. A criterion was derived for fast...
journal article 2020
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Lyu, T. (author), Dorenbos, P. (author)
Developing a feasible design principle for solid-state materials for persistent luminescence and storage phosphors with high charge carrier storage capacity remains a crucial challenge. Here we report a methodology for such rational design via vacuum referred binding energy (VRBE) diagram aided band structure engineering and crystal synthesis...
journal article 2020
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Dorenbos, P. (author)
In first approximation the binding of an electron in lanthanide 4f<sup>q</sup> ground states changes with q in a characteristic zigzag shape that is independent on type of compound. Those shapes have been parameterized in past publications and are used to construct host referred binding energy (HRBE) or vacuum referred binding energy (VRBE)...
journal article 2020
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Zhuo, Ya (author), Hariyani, Shruti (author), You, Shihai (author), Dorenbos, P. (author), Brgoch, Jakoah (author)
Information on the 5d level centroid shift (ϵc) of rare-earth ions is critical for determining the chemical shift and the Coulomb repulsion parameter as well as predicting the luminescence and thermal response of rare-earth substituted inorganic phosphors. The magnitude of ϵc depends on the binding strength between the rare-earth ion and its...
journal article 2020
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Dorenbos, P. (author)
In the construction of a vacuum referred binding energy (VRBE) diagram with the lanthanide 4f<sup>q</sup> ground states, always a compound independent variation with the number q= 1 to 14 is assumed. Experimental data from thermo-luminescence, intervalence charge transfer bands, and thermo-bleaching studies provide first indications that a...
journal article 2019
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Awater, R.H.P. (author), Alekhin, M. (author), Biner, D. A. (author), Krämer, K.M.B. (author), Dorenbos, P. (author)
The luminescence and scintillation properties of SrI <sub>2</sub> single crystals doped with 5% Eu <sup>2+</sup> and 0.05%, 0.2% and 0.5% Sm <sup>2+</sup> are evaluated. X-ray excited and photoluminescence measurements show energy transfer from excited Eu <sup>2+</sup> ions to Sm <sup>2+</sup> ions. At a concentration of 0.5% Sm <sup>2+</sup...
journal article 2019
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Dobrowolska, Anna (author), bos, A.J.J. (author), Dorenbos, P. (author)
LiLuSiO<sub>4</sub>:Ce and LiLuSiO<sub>4</sub>:Ce, Tm show very efficient charge carrier storage properties upon beta irradiation after samples have received treatment in vacuum. They outperform the commercial storage phosphor BaFBr(I):Eu<sup>2+</sup> in many aspects. The influence of the synthesis conditions, Ce and Tm concentration,...
journal article 2019
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Dorenbos, P. (author)
There are many properties of scintillators that are of importance for application. One property is the energy resolution for the detection of γ-rays, and during past 20 years we witnessed enormous progress. The state of the art resolution for the detection of 662 keV γ photons was 5–6% at the end of the 20th century, and today scintillators...
journal article 2019
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Ou, Yiyi (author), Zhou, Weijie (author), Hou, Dejian (author), Brik, Mikhail G. (author), Dorenbos, P. (author), Huang, Yan (author), Liang, Hongbin (author)
In this work, the crystal structure and electronic structure as well as the synchrotron radiation vacuum ultraviolet-ultraviolet-visible (VUV-UV-vis) luminescence properties of Li <sub>6</sub> Y(BO <sub>3</sub> ) <sub>3</sub> (LYBO):Ce <sup>3+</sup> phosphors were investigated in detail. The Rietveld refinement and DFT calculation reveal the...
journal article 2019
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Qu, Bingyan (author), Zhou, Rulong (author), Wang, L. (author), Dorenbos, P. (author)
How the 3d transition metal (TM) ions induce defect levels in wide band gap compounds and how these defect levels evolve from compound to compound is very important in understanding and predicting the luminescent properties of TM activated phosphors. This issue is discussed by studying the ground state 3d<sup>n</sup> level locations of the TM...
journal article 2019
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Dorenbos, P. (author)
The location of the lanthanide ground states with respect to the host valence band or to the vacuum level always follow characteristic zigzag patterns with the number of electrons q in the 4f orbital. The patterns that are used today evolved over the years by combining experimental data from different techniques, and they are in first...
journal article 2019
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Lyu, T. (author), Dorenbos, P. (author)
We report a general methodology to the rational design of thermally stimulated short-wave infrared (SWIR) luminescence between ∼900 and 1700 nm by a new combination of using efficient energy transfer from Bi <sup>3+</sup> to Nd <sup>3+</sup> and an adjustable hole trap depth via valence band engineering. Predictions from a vacuum referred...
journal article 2019
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