002891182 001__ 2891182
002891182 003__ SzGeCERN
002891182 005__ 20240910145124.0
002891182 0247_ $$2DOI$$a10.1039/d3ce00320e
002891182 0248_ $$aoai:cds.cern.ch:2891182$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002891182 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:2766387$$d2024-03-08T15:29:48Z$$h2024-03-09T05:00:08Z$$mmarcxml
002891182 035__ $$9Inspire$$a2766387
002891182 041__ $$aeng
002891182 100__ $$aVilla, Irene$$uPrague, Inst. Phys.
002891182 245__ $$9submitter$$aFirst investigation of the morphological and luminescence properties of HfO$_2$ nanoparticles synthesized by photochemical synthesis
002891182 260__ $$c2023
002891182 300__ $$a10 p
002891182 520__ $$9submitter$$aFor the first time, hafnia (HfO$_2$) nanoparticles have been produced by photochemical synthesis. The photochemical route has been proven to be scalable, affordable, and straightforward to create monoclinic HfO$_2$ nanoparticles with a size of tens of nanometers. The exploitation of this route offers a chance to create large amounts of dense nanoparticles with reduced costs and time of production for future creation of large area composite scintillators for fast timing techniques. Specific annealing treatments from 450 °C to 1000 °C have been targeted to tune the structural and morphological properties and optimize the luminescence of the nanoparticles. Hafnia nanoparticles annealed at low temperature display an amorphous structure. After thermal treatment at 1000 °C, HfO$_2$ nanoparticles crystallize into a monoclinic phase, as evidenced by thermal analyses and X-ray diffraction. Radioluminescence and photoluminescence of HfO$_2$ have been investigated at room temperature and 77 K. The emission band of hafnia covers a range from 300 to 600 nm and it can be attributed to defects within the matrix. In particular, the highest radioluminescence intensity appears in the crystalline sample annealed at 1000 °C, thanks to the higher crystallinity degree and the reduction of non-radiative channels and quenching defects. Photoluminescence and scintillation decay have evidenced the presence of the fast decay in the nanosecond time range. Thus, due to their size, density, and spectroscopic and timing features, monoclinic hafnia nanoparticles obtained by photochemical synthesis are attractive for potential creation of large area scintillating composites.
002891182 540__ $$3publication$$aCC-BY-NC-3.0$$fOther$$uhttps://creativecommons.org/licenses/by-nc/3.0/
002891182 65017 $$2INSPIRE$$aEngineering
002891182 65017 $$2INSPIRE$$aChemical Physics and Chemistry
002891182 690C_ $$aARTICLE
002891182 690C_ $$aCERN
002891182 700__ $$aProcházková, Lenka Prouzová$$uPrague, Inst. Phys.$$uPrague, Tech. U.$$vFaculty of Nuclear Sciences and Physical Engineering CTU in Prague, Czech Republic
002891182 700__ $$aMihóková, Eva$$uPrague, Inst. Phys.
002891182 700__ $$aBabin, Vladimir$$uPrague, Inst. Phys.
002891182 700__ $$aKrál, Robert$$uPrague, Inst. Phys.
002891182 700__ $$aZemenová, Petra$$uPrague, Inst. Phys.
002891182 700__ $$aFalvey, Alexandra$$uPrague, Inst. Phys.
002891182 700__ $$aČuba, Václav$$uPrague, Tech. U.
002891182 700__ $$aSalomoni, Matteo$$uMilan Bicocca U.$$uCERN$$vDipartimento di Fisica "Giuseppe Occhialini", Università degli Studi Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
002891182 700__ $$aPagano, Fiammetta$$uCERN$$uMilan Bicocca U.$$vDipartimento di Fisica "Giuseppe Occhialini", Università degli Studi Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
002891182 700__ $$aCalà, Roberto$$uCERN$$uMilan Bicocca U.$$vDipartimento di Fisica "Giuseppe Occhialini", Università degli Studi Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
002891182 700__ $$aFrank, Isabel$$uCERN$$uMunich, Tech. U.$$vLudwig Maximilian University of Munich, Geschwister-Scholl-Platz 1, Munich, Germany
002891182 700__ $$aAuffray, Etiennette$$uCERN
002891182 700__ $$aNikl, M$$uPrague, Inst. Phys.
002891182 773__ $$c4345-4354$$n30$$pCrystEngComm$$v25$$y2023
002891182 8564_ $$82516760$$s3711546$$uhttps://cds.cern.ch/record/2891182/files/d3ce00320e.pdf$$yFulltext
002891182 960__ $$a13
002891182 980__ $$aARTICLE