Results 41 to 50 of about 276 (171)

Lead‐Free Perovskites and Metal Halides for Resistive Switching Memory and Artificial Synapse

Small Structures, Volume 5, Issue 6, June 2024.
Transitioning from lead‐based to lead‐free halide perovskites and their derivatives is vital for advancing metal halide‐based resistive switching memory and artificial synapse toward commercialization. This review introduces the fundamentals of lead‐free metal halides used in memristors, comprehensively summarizes the recent progress in the field, and ...
Bo Wei Zhang, Chun‐Ho Lin, Shruti Nirantar, EQ Han, Yurou Zhang, Zitong Wang, Miaoqiang Lyu, Lianzhou Wang   +7 more
wiley   +1 more source

Luminescence of Ce3+ and Pr3+ in dense fluorides for fast scintillator crystals

, 2021
Dans le cadre d'une recherche de cristaux scintillateurs détecteurs de rayonnements X ou une étude de la luminescence du cérium et du praséodyme dans des composés fluorés denses à été effectuée.
MESNARD, Patricia
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Striking Change in Radiative Lifetime and Asymmetry Ratio with Temperature for the Double Perovskite Cs2NaEuCl6

Advanced Optical Materials, Volume 12, Issue 10, April 4, 2024.
It is unusual to have a decrease in lifetime with temperature due to an increase in radiative rate. Normally, the decrease is due to an increase in nonradiative rate. The use of the europium ion as an indicator of changes in site symmetry with temperature has severe limitations. Abstract The measurement of quantum yield (QY) is an important process for
Daiwen Xiao, Hei‐Yui Kai, Guohua Jia, Ka‐Leung Wong, Peter A. Tanner   +4 more
wiley   +1 more source

Luminescence de Ce3+ et Pr3+ dans les fluorures denses en vue de la réalisation de cristaux scintillateurs à déclin rapide

, 2021
Dans le cadre d'une recherche de cristaux scintillateurs détecteurs de rayonnements X ou une étude de la luminescence du cérium et du praséodyme dans des composés fluorés denses à été effectuée.
Mesnard, Patricia
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Emission Colours of Bistable Photochromic Compounds: Ce-Doped Alkaline (Rb, K, Na) – Indium Fluorides.

, 2022
International audienceThe structural and spectroscopic properties of three Ce3+-doped A3InF6 compounds (with A+= Rb+, K+, Na+) are investigated. Containing indium, they all exhibit 2Ce3+ + In3+ ↔ In+ + 2Ce4+ redox processes induced by UV irradiation ...
Vincent Rodriguez, Alain Demourgues, Demourgues, Alain, Jubera, Veronique, Chiron, Anthony, Gaudon, Manuel, Frayret, Christine, Christine Frayret, Anthony Chiron, Manuel Gaudon, Durand, Etienne, Alexandre Fargues, Andron, Ines, Rodriguez, Vincent, Véronique Jubera, Ines Andron, Etienne Durand, Fargues, Alexandre   +17 more
core   +1 more source

The crystal structure of \alpha-K_{3}AIF_{6}$: elpasolites and double perovskites with broken corner-sharing connectivity of the octahedral framework

, 2009
: The crystal structure of \u3b1-K3AlF6 was solved and refined from a combination of powder X-ray and neutron diffraction data (a = 18.8385(3)\uc5, c = 33.9644(6)\uc5, S.G. I41/a, Z = 80, RP(X-ray) = 0.037, RP(neutron) = 0.053).
Laurinavichute, Veronika K., Rozova, Marina G., Abakumov, Artem M., Woodward, Patrick M., Antipov, Evgeny V., King, Graham   +5 more
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Assessing Deep Generative Models in Chemical Composition Space

, 2022
The computational discovery of novel materials has been one of the main motivations behind research in theoretical chemistry for several decades. Despite much effort, this is far from a solved problem, however.
Hanna Türk (13983245), Elisabetta Landini (13983248), Karsten Reuter (1342152), Johannes T. Margraf (1707877), Christian Kunkel (4050100)   +4 more
core   +1 more source

Structural investigations of ytterbium dopant sites and elpasolite nanocrystal structure [PDF]

, 2023
Thesis (Ph.D.)--University of Washington, 2023The relationship between molecular and materials structure and observed properties is a pillar of chemistry and materials science.
Kluherz, Kyle Thompson
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Ab initio model potential embedded-cluster study of the ground and lowest excited states of Cr3+ defects in the elpasolites Cs2NaYCl6 and Cs2NaYBr6

, 1998
In this paper we present the results of an ab initio model potential (AIMP) embedded-cluster study of the ground and lowest excited states of Cr3+ defects in the elpasolites Cs2NaYCl6 and Cs2NaYBr6; complete active space SCF (CASSCF) and averaged coupled-
Seijo, L, Al-Abdalla, A, Barandiaran, Z, Lindh, Roland,   +3 more
core   +1 more source

Track and Trace: Unravelling the formation mechanism and charge carrier dynamics in AgBi-elpasolites

In this PhD thesis we set out to understand the photoconversion performance of known and new halide-elpasolites semiconductors. Halide-elpasolites have been proposed as more stable and less-toxic alternatives for the remarkable performing lead-halide ...
Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis, Weckhuysen, Bert, Jöbsis, Huygen Job, Hutter, Eline   +4 more
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