Journal ArticleDOI
High‐voltage bulk photovoltaic effect and the photorefractive process in LiNbO3
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TLDR
An explanation of the photovoltaic effect, based on the asymmetry of the lattice, is proposed in this paper, which accounts for the light-induced index changes in LiNbO3.Abstract:
Photocurrents in doped LiNbO3 crystals are shown to be due to a bulk photovoltaic effect with saturation voltages in excess of 1000 V (∼105 V/cm). This effect accounts for the light‐induced index changes in LiNbO3. An explanation of the photovoltaic effect, based on the asymmetry of the lattice, is proposed.read more
Citations
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Journal ArticleDOI
Brownian motors: noisy transport far from equilibrium
TL;DR: In this paper, the main emphasis is put on directed transport in so-called Brownian motors (ratchets), i.e. a dissipative dynamics in the presence of thermal noise and some prototypical perturbation that drives the system out of equilibrium without introducing a priori an obvious bias into one or the other direction of motion.
Journal ArticleDOI
Switchable ferroelectric diode and photovoltaic effect in BiFeO3.
TL;DR: It is found that bulk electric conduction in ferroelectric monodomain BiFeO3 crystals is highly nonlinear and unidirectional.
Journal ArticleDOI
Lithium niobate: Summary of physical properties and crystal structure
R. S. Weis,Thomas K. Gaylord +1 more
TL;DR: In this article, the important tensor physical properties and their mathematical descriptions are compiled and presented, including the essential features of the structure of lithium niobate, including its hexagonal and rhombohedral unit cells, and the principal (Cartesian) axes used in the description of the anisotropic properties are specified relative to the crystal structure.
Journal ArticleDOI
Above-bandgap voltages from ferroelectric photovoltaic devices
S. Y. Yang,Jan Seidel,Jan Seidel,Byrnes Steven J,Byrnes Steven J,Padraic Shafer,Chan-Ho Yang,Marta D. Rossell,Pu Yu,Ying-Hao Chu,James F. Scott,Joel W. Ager,Lane W. Martin,Ramamoorthy Ramesh,Ramamoorthy Ramesh +14 more
TL;DR: A fundamentally different mechanism for photovoltaic charge separation is reported, which operates over a distance of 1-2 nm and produces voltages that are significantly higher than the bandgap.
Journal ArticleDOI
Perovskite oxides for visible-light-absorbing ferroelectric and photovoltaic materials
Ilya Grinberg,D. Vincent West,Maria I. Alvarado Torres,Gaoyang Gou,David M. Stein,Liyan Wu,Guannan Chen,Eric M. Gallo,Andrew R. Akbashev,Peter K. Davies,Jonathan E. Spanier,Andrew M. Rappe +11 more
TL;DR: The ability of KBNNO to absorb three to six times more solar energy than the current ferroElectric materials suggests a route to viable ferroelectric semiconductor-based cells for solar energy conversion and other applications.
References
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Journal ArticleDOI
Oxygen‐Octahedra Ferroelectrics. I. Theory of Electro‐optical and Nonlinear optical Effects
M. DrDomenico,S. H. Wemple +1 more
TL;DR: In this article, a microscopic tensor theory of the electro-optical and nonlinear optical effects in oxygen-octahedra ferroelectrics is presented, which stresses the importance of the basic BO6 octahedron building block in this class of materials.
Journal ArticleDOI
Optically Induced Change of Refractive Indices in LiNbO3 and LiTaO3
TL;DR: In this article, local changes of indices of refraction observed in poled single crystals of ferroelectric LiNbO3 and LiTaO3 when illuminated by focused light have been studied.
Journal ArticleDOI
Holographic storage in lithium niobate
TL;DR: In this article, a single-crystal lithium niobate has been used as a holographic storage medium and the high resolution obtained suggests that such material may be useful in high capacity, changeable optical information storage, processing and display devices.
Journal ArticleDOI
Surface Space-Charge Layers in Barium Titanate
TL;DR: In this article, it was shown that pyroelectric currents can be produced in single crystals of barium titanate even though there is no electric field applied above the Curie temperature, and the polarization that remains at these temperatures is ascribed to space-charge fields in the crystal.
Journal ArticleDOI
Multiphoton photorefractive processes for optical storage in LiNbO3
TL;DR: In this paper, permanent reversible changes of the refractive index of pure and doped LiNbO3 have been obtained by multiphoton absorption, which can be read nondestructively, eliminating the need for fixing processes while maintaining the versatility of optical erasure.