Kamil Brylew
Nicolaus Copernicus University in Toruń
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Featured researches published by Kamil Brylew.
Scientific Reports | 2016
Muhammad Danang Birowosuto; Daniele Cortecchia; Winicjusz Drozdowski; Kamil Brylew; W. Lachmanski; Annalisa Bruno; Cesare Soci
Current technologies for X-ray detection rely on scintillation from expensive inorganic crystals grown at high-temperature, which so far has hindered the development of large-area scintillator arrays. Thanks to the presence of heavy atoms, solution-grown hybrid lead halide perovskite single crystals exhibit short X-ray absorption length and excellent detection efficiency. Here we compare X-ray scintillator characteristics of three-dimensional (3D) MAPbI3 and MAPbBr3 and two-dimensional (2D) (EDBE)PbCl4 hybrid perovskite crystals. X-ray excited thermoluminescence measurements indicate the absence of deep traps and a very small density of shallow trap states, which lessens after-glow effects. All perovskite single crystals exhibit high X-ray excited luminescence yields of >120,000 photons/MeV at low temperature. Although thermal quenching is significant at room temperature, the large exciton binding energy of 2D (EDBE)PbCl4 significantly reduces thermal effects compared to 3D perovskites, and moderate light yield of 9,000 photons/MeV can be achieved even at room temperature. This highlights the potential of 2D metal halide perovskites for large-area and low-cost scintillator devices for medical, security and scientific applications.
Optical Materials Express | 2014
Winicjusz Drozdowski; Kamil Brylew; Andrzej J. Wojtowicz; Jaroslaw Kisielewski; Marek Świrkowicz; Tadeusz Łukasiewicz; Johan T. M. de Haas; Pieter Dorenbos
(LuxY1-x)3Al5O12:Pr (x = 0.25, 0.50, 0.75) crystals have been grown by the Czochralski method and their scintillation properties have been examined. Compared to the well-respected LuAG:Pr scintillator, which has so extensively been studied in the recent years, the new mixed LuYAG:Pr crystals display markedly higher light yields, regardless of the value of x. In particular, (Lu0.75Y0.25)3Al5O12:0.2%Pr characterized by a yield of 33000 ph/MeV, an energy resolution of 4.4% (at 662 keV), and a density of 6.2 g/cm3, seems to be an ideal candidate to supercede Lu3Al5O12:0.2%Pr (19000 ph/MeV, 4.6%, 6.7 g/cm3) in various applications. The observed enhancement of light output following the partial substitution of lutetium by yttrium is most probably related to some specific differences in distributions of shallow traps in particular materials.
Central European Journal of Physics | 2013
Kamil Brylew; Winicjusz Drozdowski; Marcin E. Witkowski; Kei Kamada; Takayuki Yanagida; Akira Yoshikawa
Pure and Pr-activated Lu3Al5O12 (LuAG) crystals have been grown by the Czochralski method. In order to improve the scintillation properties, several samples have been annealed in air. Various annealing temperatures and periods of time have been tested to determine optimal conditions in the way of scintillation yield and energy resolution enhancement. The largest increase of yield of LuAG:Pr (17%), accompanied by a distinct decrease of resolution, has been observed after annealing at 1100°C for 48 h. On the contrary, in case of undoped LuAG no significant changes following thermal annealing have been noticed.
IOP Conference Series: Materials Science and Engineering | 2017
Winicjusz Drozdowski; Andrzej J. Wojtowicz; Kamil Brylew; W. Łachmański; E. Talik; M. Szubka; J. Kusz; A. Guzik; K. Balin; Jaroslaw Kisielewski; Marek Świrkowicz; A. Pajączkowska
Interior of Czochralski-grown (Lu,Y)AG:Pr crystals has been examined by means of several techniques, such as X-Ray Photoelectron Spectroscopy, X-Ray Diffraction, Time-of-Flight Secondary Ion Mass Spectrometry, and magnetic susceptibility measurements. Additionally, their luminescence has been monitored at various combinations of a double-beam (X-ray/IR) excitation.
Journal of Luminescence | 2014
Kamil Brylew; Winicjusz Drozdowski; Andrzej J. Wojtowicz; Kei Kamada; Akira Yoshikawa
Optical Materials | 2014
Winicjusz Drozdowski; Kamil Brylew; Marcin E. Witkowski; Andrzej J. Wojtowicz; Piotr Solarz; Kei Kamada; Akira Yoshikawa
Radiation Measurements | 2013
Winicjusz Drozdowski; Kamil Brylew; Marcin E. Witkowski; Andrzej J. Wojtowicz; Kei Kamada; Takayuki Yanagida; Akira Yoshikawa
Optical Materials | 2012
Winicjusz Drozdowski; Kamil Brylew; A. Chruścińska; Kei Kamada; Takayuki Yanagida; Akira Yoshikawa
Radiation Measurements | 2014
Winicjusz Drozdowski; Kamil Brylew; S.M. Kaczmarek; Danuta Piwowarska; Yosuke Nakai; Taiju Tsuboi; Wei Huang
Optical Materials | 2016
Winicjusz Drozdowski; Kamil Brylew; Marcin E. Witkowski; A. Drewniak; Z. Masewicz; Andrzej J. Wojtowicz; Jaroslaw Kisielewski; Marek Świrkowicz