Luminescence properties of zirconia nanocrystals prepared by solar physical vapor deposition

Šmits, Krišjānis; Grigorjeva, L.; Millers, D.; Kundziņš, K.; Ignatāns, Reinis; Grabis, Jānis; Monty, C.

doi:10.1016/j.optmat.2014.06.003

Cited by 18 publications

(12 citation statements)

References 22 publications

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“…In the present study ZnO:In nanopowders were obtained in a Heliotron reactor (PROMES CNRS, France) via the solar physical vapour deposition (SPVD) method (Smits et al, 2014). The method of preparation offers many advantages over the conventional methods: outstanding purity of the samples, ease of doping, ability to acquire huge temperature gradient and the process itself is ecologicallyfriendly.…”

Section: Methodsmentioning

confidence: 99%

“…Suppression of defect luminescence with microsecond decay times is very important for fast scintillators; however, sub-nanosecond luminescence in ZnO:In NC was not explored previously. In this work we present the results of time-resolved luminescence studies accompanied by the morphology studies of undoped and indium doped ZnO nanocrystals (NC) obtained via the solar physical vapour deposition (SPVD) method (Smits et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Sub-nanosecond excitonic luminescence in ZnO:In nanocrystals

Grigorjeva

Grūbe

Bite

et al. 2019

Radiation Measurements

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The effects of indium concentration influence on the morphology, luminescence spectra and luminescence decay kinetics of ZnO:In nanocrystals prepared by the solar physical vapour deposition method are investigated. While undoped ZnO nanocrystals exhibit tetrapod-like morphology, with increasing indium concentration the tetra-pods are transformed into particles whose average size decreases with increasing indium concentration. The results of time-resolved luminescence studies of undoped and indium doped ZnO nanocrystals showed that by increasing indium concentration the decay time falls and luminescence intensity decreases.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sub-nanosecond excitonic luminescence in ZnO:In nanocrystals

Grigorjeva

Grūbe

Bite

et al. 2019

Radiation Measurements

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“…Second method used for the synthesis of ZnO nanopowder is the solar physical vapor deposition (SPVD) [16]. The powder was prepared in the Heliotron reactor (PROMES CNRS, France).…”

Section: Synthesis Of Nanopowders and Ceramicsmentioning

confidence: 99%

Radioluminescence, thermoluminescence and dosimetric properties of ZnO ceramics

Grigorjeva

Zolotarjovs

Sokovnin

et al. 2017

Ceramics International

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Two types of ZnO ceramics were fabricated and characterized by XRD, SEM methods. The radioluminescence spectra were measured within the 300-550 K range. The defect luminescence band peaking at ~2.35 eV is the dominant one in radioluminescence spectra in both of the fabricated ceramics. The thermostimulated luminescence (TSL) glow-curves were measured after X-ray irradiation at 300 K. It was concluded that the complex overlapping peak within the 320-450 K temperature range consists of two components (~360-375 K and 400-420 K). The ratio of component intensities differs in both ceramics. The positions of high temperature TSL components (480-520 K) also differ in both samples; therefore not only sintering conditions but also the properties of the initial powder are very important for characteristics of TSL. A linear dependence of peak intensity on irradiation dose was observed up to ~3 kGy for ceramic 1 and up to 9 kGy for ceramic 2.

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“…ere is also a technique, which uses stellarator, speci cally heliotron, known as the solar physical vapor deposition (SPVD) method [21].…”

Section: Synthesis Of Nanometric Zirconia In the Vapor Phasementioning

confidence: 99%

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

Kwaśny¹,

Balcerzak²

2017

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High chemical stability, resistance to changes in the pH, pressure and temperature meant that zirconium oxide is widely used in many elds. It is used in water treatment and waste water treatment processes, as well as air puri cation. In this paper, selected methods of nano-zirconia synthesis in liquid phase were characterized. ese methods include, among others, the microemulsion method. Based on literature data, the advantages and di culties associated with the use of each method are presented, in order to answer the question of which method of nanometric zirconium oxide synthesis in the liquid phase is the most advantageous. e authors also pointed out some directions of development for the discussed methods, which relate to, among others, solvent change and the use of additives in the form of polymers.Keywords: nano zirconia, hydrothermal method, synthesis, microemulsion method Streszczenie Wysoka stabilność chemiczna, odporność na zmiany pH, ciśnienia i temperatury sprawiły, że tlenek cyrkonu znajduje szerokie zastosowanie w wielu dziedzinach. Jest stosowany w procesach uzdatniania wody i oczyszczania ścieków, a także w oczyszczaniu powietrza. W niniejszej pracy scharakteryzowano wybrane metody syntezy nanotlenku cyrkonu w fazie ciekłej. Wśród grupy tych metod wyróżnia się m.in. metodę mikroemulsji. Na podstawie danych literaturowych przedstawiono zalety i trudności związane ze stosowaniem poszczególnych metod, aby móc odpowiedzieć na pytanie, która metoda syntezy nanometrycznego tlenku cyrkonu, w fazie ciekłej, jest najkorzystniejsza. Autorzy wskazali również na pewne kierunki rozwojowe omówionych metod, które wiążą się m.in. ze zmianą polarności rozpuszczalnika i stosowaniem dodatków w formie polimerów.Słowa kluczowe: nanotlenek cyrkonu, metoda hydrotermalna, synteza, metoda mikroemulsji 110

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Luminescence properties of zirconia nanocrystals prepared by solar physical vapor deposition

Cited by 18 publications

References 22 publications

Sub-nanosecond excitonic luminescence in ZnO:In nanocrystals

Sub-nanosecond excitonic luminescence in ZnO:In nanocrystals

Radioluminescence, thermoluminescence and dosimetric properties of ZnO ceramics

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

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