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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)
phosphors were investigated in detail. The Rietveld refinement and DFT calculation reveal the...
journal article 2019
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Gourgues, R.B.M. (author), Esmaeil Zadeh, I. (author), Elshaari, A.W.A. (author), Bulgarini, G. (author), Los, J.W.N. (author), Zichi, Julien (author), Dalacu, Dan (author), Poole, Philip J. (author), Dorenbos, S.N. (author), Zwiller, And V.A.L. (author)
Integration of superconducting nanowire single-photon detectors and quantum sources with photonic waveguides is crucial for realizing advanced quantum integrated circuits. However, scalability is hindered by stringent requirements on high-performance detectors. Here we overcome the yield limitation by controlled coupling of photonic channels...
journal article 2019
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Qu, Bingyan (author), Zhou, Rulong (author), Wang, L. (author), Dorenbos, P. (author)
level locations of the TM...
journal article 2019
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Dorenbos, P. (author)
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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Lyu, T. (author), Dorenbos, P. (author)
and an adjustable hole trap depth via valence band engineering. Predictions from a vacuum referred...
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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Awater, R.H.P. (author), Alekhin, M. (author), Biner, D. A. (author), Dorenbos, P. (author)
2+ journal article 2019
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Wolszczak, W.W. (author), Dorenbos, P. (author)
In this article we present a method of characterizing scintillating materials by digitization of each individual scintillation pulse followed by digital signal processing. With this technique it is possible to measure the pulse shape and the energy of an absorbed gamma photon on an event-by-event basis. In contrast to time-correlated single...
journal article 2018
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Dorenbos, P. (author)
Electronic level schemes with the host valence and conduction band together with the level locations of ground and excited states of defects are used to explain and predict luminescence and carrier trapping phenomena. These schemes are always constructed and interpreted by using the electron picture. In this work the alternative hole picture...
journal article 2018
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Zhou, Rongfu (author), Lin, Litian (author), Liu, Chunmeng (author), Dorenbos, P. (author), Tao, Ye (author), Huang, Yan (author), Liang, Hongbin (author)
structure with the Pnma group by Rietveld refinement, and the temperature...
journal article 2018
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Lyu, T. (author), Dorenbos, P. (author)
,...
journal article 2018
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Luo, H. (author), Dorenbos, P. (author)
Trivalent Nd, Dy, Ho, Er, Tm, Sm and Eu usually act as electron trapping centers in wide band gap compounds, whereas trivalent Ce, Tb and Pr act as hole trapping centers. When a deep electron trap is combined with a shallow hole trap, then during the thermoluminescence glow the hole is released, generating recombination luminescence at the...
journal article 2018
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Lyu, T. (author), Dorenbos, P. (author)
Various methods for deliberate design electron and hole trapping materials are explored with a study on double lanthanide doped rare earth ortho phosphates. Cerium acts as recombination center while lanthanide codopants as electron trapping centers in LaPO4:0.005Ce3+,0.005Ln3+. The electron trap depth generated by lanthanide codopants can be...
journal article 2017
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Katayama, Y. (author), Kayumi, T. (author), Ueda, J. (author), Dorenbos, P. (author), Viana, B (author), Tanabe, S (author)
In this paper, Mn2+ and Ln3+ (Ln = Eu, Yb) co-doped MgGeO3 phosphors were prepared using a solid state reaction technique, and their optical properties were investigated. Mn2+-doped samples exhibit persistent luminescence in the red region, peaking at 677 nm, because of the 4T1 → 6A1 transition of the Mn2+ ions under ultraviolet (UV) excitation....
journal article 2017
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Ueda, J. (author), Meijerink, Andries (author), Dorenbos, P. (author), bos, A.J.J. (author), Tanabe, Setsuhisa (author)
We investigated thermally activated ionization and thermally activated crossover as the two possibilities of quenching of 5d luminescence in Pr3+-doped Y3Al5-xGaxO12. Varying the Ga content x gives the control over the relative energy level location of the 5d and 4f2:PJ3 states of Pr3+ and the host conduction band (CB). Temperature-dependent...
journal article 2017
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Luo, H. (author), bos, A.J.J. (author), Dorenbos, P. (author)
Two different charge carrier trapping processes have been investigated in RE2O2S:Ln3+ (RE = La, Gd, Y, and Lu; Ln = Ce, Pr, and Tb) and RE2O2S:M (M = Ti4+ and Eu3+). Cerium, praseodymium and terbium act as recombination centers and hole trapping centers while host intrinsic defects provide the electron trap. The captured electrons released from...
journal article 2017
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Budde, B (author), Luo, H. (author), Dorenbos, P. (author), van der Kolk, E. (author)
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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Ueda, J. (author), Hashimoto, Atsunori (author), Takemura, Shota (author), Ogasawara, Kazuyoshi (author), Dorenbos, P. (author), Tanabe, Setsuhisa (author)
, TM = Sc, Ti, V, Cr, Fe) was investigated and those electron trap...
journal article 2017
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Dobrowolska, A.P. (author), Dierre, B.F.P.R. (author), Fang, C.M. (author), Hintzen, H.T.J.M. (author), Dorenbos, P. (author)
Structural and optical properties of MGa2S4 (M = Mg, Zn, Ca, Sr, Ba) compounds have been compared, and the vacuum referred binding energy (VRBE) schemes were constructed for the lanthanide ions in the iso-structural compounds CaGa2S4 and SrGa2S4 employing literature data. The VRBE of an electron in the 5d excited state of Eu2+ was found at 0.75...
journal article 2016
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