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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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Gourgues, R.B.M. (author), Esmaeil Zadeh, I.Z. (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)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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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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Chang, J. (author), Esmaeil Zadeh, I.Z. (author), Los, Johannes W.N. (author), Zichi, Julien (author), Fognini, Andreas (author), Gevers, Monique (author), Dorenbos, Sander (author), Pereira, S.F. (author), Urbach, Paul (author), Zwiller, Val (author)In the past decade, superconducting nanowire single-photon detectors (SNSPDs) have gradually become an indispensable part of any demanding quantum optics experiment. Until now, most SNSPDs have been coupled to single-mode fibers. SNSPDs coupled to multimode fibers have shown promising efficiencies but have yet to achieve high time resolution....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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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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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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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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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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Gourgues, R.B.M. (author), Los, J.W.N. (author), Zichi, Julien (author), Chang, J. (author), Kalhor, N. (author), Bulgarini, G. (author), Dorenbos, S.N. (author), Zwiller, Val (author), Esmaeil Zadeh, I.Z. (author)We experimentally investigate the performance of NbTiN superconducting nanowire single photon detectors above the base temperature of a conventional Gifford-McMahon cryocooler (2.5 K). By tailoring design and thickness (8 - 13 nm) of the detectors, high performance, high operating temperature, single-photon detection from the visible to...journal article 2019
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Elsinger, Lukas (author), Gourgues, R.B.M. (author), Esmaeil Zadeh, I.Z. (author), Maes, Jorick (author), Guardiani, A. (author), Bulgarini, G. (author), Pereira, S.F. (author), Dorenbos, S.N. (author), Zwiller, V.G. (author)Single-photon sources and detectors are indispensable building blocks for integrated quantum photonics, a research field that is seeing ever increasing interest for numerous applications. In this work, we implemented essential components for a quantum key distribution transceiver on a single photonic chip. Plasmonic antennas on top of silicon...journal article 2019
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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)A series of Ln-doped KSrPO<sub>4</sub> (Ln = Ce<sup>3+</sup>, Eu<sup>3+</sup>, Eu<sup>2+</sup>, Pr<sup>3+</sup>) phosphors are prepared through a high-temperature solid-state method. The KSrPO<sub>4</sub> compound is confirmed to possess a β-K<sub>2</sub>SO<sub>4</sub> structure with the Pnma group by Rietveld refinement, and the temperature...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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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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Lyu, T. (author), Dorenbos, P. (author)The vacuum referred binding energy (VRBE)-guided design of Bi<sup>3+</sup>-based storage and afterglow materials together with charge carrier trapping processes is explored with a study on bismuth- and lanthanide-doped rare earth ortho-phosphates. By combining Bi<sup>3+</sup> with the shallow hole trap of Tb<sup>3+</sup> or Pr<sup>3+</sup>,...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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Awater, R.H.P. (author), Dorenbos, P. (author)This paper provides an overview and interpretation of the spectroscopic data of the Bi<sup>3+</sup> activator ion in 117 different inorganic compounds. The energies of the metal-to-metal charge transfer and the interconfigurational transitions of Bi<sup>3+</sup> were collected from the archival literature. Using these energies, in combination...review 2017