Results 81 to 90 of about 217,541 (289)

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

Temporal coherence of spatially indirect excitons across Bose–Einstein condensation: the role of free carriers

New Journal of Physics, 2018
We study the time coherence of the photoluminescence radiated by spatially indirect excitons confined in a 10 μ m electrostatic trap. Above a critical temperature of about 1 K, we show that the photoluminescence is homogeneously broadened in the dilute ...
Romain Anankine, Suzanne Dang, Mussie Beian, Edmond Cambril, Carmen Gomez Carbonell, Aristide Lemaître, François Dubin   +6 more
doaj   +1 more source

Changes in impurity radiative recombination and surface morphology induced by treatment of GaP in weak magnetic field

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020
In this work, the results of studying the long-term changes in the intensity of photoluminescence bands and surface morphology of gallium phosphide caused by treatment in weak magnetic fields have been presented. A non-thermal mechanism based on the idea
R.A. Redko, G.V. Milenin, V.V. Milenin, S.M. Redko   +3 more
doaj   +1 more source

Theory of Exciton Recombination from the Magnetically Induced Wigner Crystal

, 1996
We study the theory of itinerant-hole photoluminescence of two-dimensional electron systems in the regime of the magnetically induced Wigner crystal.
A. H. MacDonald, A. J. Shields, A. J. Turberfield, B. B. Goldberg, D. Heiman, D. Z. Liu, D. Z. Liu, E. M. Goldys, G. Finkelstein, H. A. Fertig, H. Buhmann, I. M. Ruzin, I. N. Harris, I. V. Kukushkin, I. V. Lerner, J. Zang, K. Kheng, L. D. Landau, L. P. Gor'kov, M. Dahl, N. A. Viet, N. R. Cooper, R. Cǒté, R. G. Clark, R. G. Clark, R. H. Morf, V. M. Apalkov, X. M. Chen   +27 more
core   +1 more source

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

Trace Explosives Detection by Photoluminescence

The Scientific World Journal, 2004
Some field tests in counter-terrorism efforts to detect explosive traces employ chemistries that yield colored products. We have examined a test kit of this kind, ETKPlus, based on widely used chemistries and employed extensively by the Israel Police ...
E. Roland Menzel, Kimberly K. Bouldin, Russell H. Murdock   +2 more
doaj   +1 more source

Measurement of miniband parameters of a doped superlattice by photoluminescence in high magnetic fields

, 2004
We have studied a 50/50\AA superlattice of GaAs/Al$_{0.21}$Ga$_{0.79}$As composition, modulation-doped with Si, to produce $n=1.4\times 10^{12}$ cm$^{-2}$ electrons per superlattice period.
A A Quivy, A B Henriques, Bastard G, E Abramof, Grahn H T, Helm M, Henriques A B, Moore K J, Nelder J A, R F Oliveira, Schmitt-Rink S, T E Lamas, Voisin P   +12 more
core   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

The Underlying Chemical Mechanism of Selective Chemical Etching in CsPbBr3 Nanocrystals for Reliably Accessing Near-Unity Emitters. [PDF]

, 2019
Reliably accessing nanocrystal luminophores with near-unity efficiencies aids in the ability to understand the upper performance limits in optoelectronic applications that require minimal nonradiative losses. Constructing structure-function relationships
Alivisatos, A Paul, Koscher, Brent A, Nett, Zachary   +2 more
core  

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source