Journal Article10.1038/29250
Visualization of hydrogen migration in solids using switchable mirrors
F.J.A. den Broeder,S. J. van der Molen,M. Kremers,J. N. Huiberts,D.G. Nagengast,A.T.M. van Gogh,W. H. Huisman,N.J. Koeman,Bernard Dam,J.H. Rector,S. Plota,M. Haaksma,R. M. N. Hanzen,RM Jungblut,P. A. Duine,R.P. Griessen +15 more
170
TL;DR: In this paper, the authors explore changes in the optical properties of yttrium films in which hydrogen diffuses laterally owing to a large concentration gradient and show that the formation of the various hydride phases is diffusion-controlled.
read more
Abstract: Switchable mirrors1,2,3 made of thin films of the hydrides of yttrium (YHx), lanthanum (LaHx) or rare-earth metals exhibit spectacular changes in their optical properties as x is varied from 0 to 3. For example, α-YHx 2.85 is a yellowish transparent semiconductor. Here we show that this concentration dependence of the optical properties, coupled with the high mobility of hydrogen in metals, offers the possibility of real-time visual observation of hydrogen migration in solids. We explore changes in the optical properties of yttrium films in which hydrogen diffuses laterally owing to a large concentration gradient. The optical transmission profiles along the length of the film vary in such a way as to show that the formation of the various hydride phases is diffusion-controlled. We can also induce electromigration of hydrogen, which diffuses towards the anode when a current flows through the film. Consequently, hydrogen in insulating YH3−δ behaves as a negative ion, in agreement with recent strong-electron-correlation theories4,5. This ability to manipulate the hydrogen distribution (and thus the optical properties) electrically might be useful for practical applications of these switchable mirrors.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Electrostatic trapping of ammonia molecules
Hendrick L. Bethlem,Giel Berden,Floris M. H. Crompvoets,Rienk T. Jongma,André J. A. van Roij,Gerard Meijer +5 more
TL;DR: The slowing of an adiabatically cooled beam of deuterated ammonia molecules by time-varying inhomogeneous electric fields and subsequent loading into an electrostatic trap is described, illustrating that polar molecules can be efficiently cooled and trapped, thus providing an opportunity to study collisions and collective quantum effects in a wide range of ultra-cold molecular systems.
552
Intrinsic Instability of Inorganic-Organic Hybrid Halide Perovskite Materials.
Byung-wook Park,Sang Il Seok +1 more
TL;DR: It is suggested that FA should be used for lead halide perovskites for chemical stability instead of MA, and additives that stabilize the crystal phase with α-FAPbI3 should eschew MA.
362
Colossal resistance switching and band gap modulation in a perovskite nickelate by electron doping
TL;DR: An electron doping strategy via a chemical route, where interstitial dopants can be reversibly intercalated, realizing a sharp phase transition in a model correlated perovskite nickelate SmNiO3 is reported.
Electrochemical optical-modulation device with reversible transformation between transparent, mirror, and black.
TL;DR: Great interest has been drawn to the electrochromic effect exhibited by inorganic materials, because of their possible applications in information displays, light shutters, and the application of an electrical voltage.
154
Hydriding kinetics of Pd capped YHx switchable mirrors
S. J. van der Molen,Jacob W. J. Kerssemakers,J.H. Rector,N.J. Koeman,Bernard Dam,R.P. Griessen +5 more
TL;DR: In this article, the authors investigated the kinetics of the metal-insulator transition in polycrystalline, Pd-capped YHx switchable mirrors upon hydrogenation.
114
References
•Book
Handbook on the Physics and Chemistry of Rare Earths
Collectif
- 01 Jan 2015
TL;DR: Handbook on the Physics and Chemistry of Rare Earths as discussed by the authors is a series of books covering all aspects of rare earth science, including chemistry, life sciences, materials science, and physics.
6.2K
Effective Hamiltonian for the superconducting Cu oxides
Fu-Chun Zhang,T. M. Rice +1 more
TL;DR: Although assuming that doping creates holes primarily on oxygen sites, this work derives explicitly a single-band effective Hamiltonian for the high-${T}_{c}$ Cu-oxide superconductors.
3.5K
Yttrium and lanthanum hydride films with switchable optical properties
J. N. Huiberts,R.P. Griessen,J.H. Rector,Rinke J. Wijngaarden,Jan P. Dekker,D.G. de Groot,N.J. Koeman +6 more
TL;DR: In this article, thin films of yttrium and lanthanum with a layer of palladium through which hydrogen can diffuse are used to simulate metal-to-insulator transitions.
943