Results 11 to 20 of about 1,202,674 (275)

Understanding Photoinduced Symmetry- Breaking Charge Separation

open access: yesCHIMIA
Symmetry-breaking charge separation (SB-CS) is a photoinduced electron transfer reaction in which the chromophore acts as both the acceptor and the donor.
Johannes Wega
doaj   +3 more sources

Spin-charge separation in ultra-cold quantum gases [PDF]

open access: yesPhysical Review Letters, 2002
We investigate the physical properties of quasi-1D quantum gases of fermion atoms confined in harmonic traps. Using the fact that for a homogeneous gas, the low energy properties are exactly described by a Luttinger model, we analyze the nature and ...
A. Minguzzi   +8 more
core   +4 more sources

Spontaneous Separation of Charged Grains [PDF]

open access: yesPhysical Review Letters, 2007
In 1867, Lord Kelvin described an experiment in which two streams of water droplets were connected so that each stream amplified the charge on the second stream [W. Thomson, Proc. R. Soc. London 16, 67 (1867)]. We present here a complementary effect in flowing grains that spontaneously separates similar and well-mixed grains into two charged streams of
Amit, Mehrotra   +2 more
openaire   +2 more sources

Separation of spin and charge in paired spin-singlet quantum Hall states [PDF]

open access: yes, 2002
We propose a series of paired spin-singlet quantum Hall states, which exhibit a separation of spin and charge degrees of freedom. The fundamental excitations over these states, which have filling fraction \nu=2/(2m+1) with m an odd integer, are spinons ...
A. Lopez   +29 more
core   +8 more sources

Strategies to Enhance Interfacial Spatial Charge Separation for High‐Efficiency Photocatalytic Overall Water‐Splitting: A Review

open access: yesAdvanced Energy & Sustainability Research, 2023
Developing efficient photocatalysts for overall water‐splitting (OWS) has garnered considerable attention due to their potential in renewable energy conversion and storage.
Selda Odabasi Lee   +2 more
doaj   +1 more source

Access Charges, Vertical Separation, and Lobbying [PDF]

open access: yesSSRN Electronic Journal, 2011
We examine how vertical separation affects the lobbying activities for the access charge of essential facilities. First, when investigating a model where the number of new entrants is fixed, we find that vertical separation either increases or decreases the access charge, and that this depends on the relative efficiency between the incumbent and the ...
Matsumura, Toshihiro   +1 more
openaire   +3 more sources

Charge separation in organic photovoltaic cells [PDF]

open access: yes, 2014
We consider a simple model for the geminate electron-hole separation process in organic photovoltaic cells, in order to illustrate the influence of dimensionality of conducting channels on the efficiency of the process. The Miller-Abrahams expression for
Argyrakis, Panos   +3 more
core   +2 more sources

Probing spin-charge separation in a Tomonaga-Luttinger liquid [PDF]

open access: yes, 2009
In a one-dimensional (1D) system of interacting electrons, excitations of spin and charge travel at different speeds, according to the theory of a Tomonaga-Luttinger Liquid (TLL) at low energies.
Anderson, D.   +8 more
core   +2 more sources

Effect of bridge on energy transfer and photoinduced charge separation in perylene-diimide-naphthalene-bisimide-hexathiophene based donor-bridge-acceptor triads

open access: yesEPJ Web of Conferences, 2013
Femtosecond transient absorption spectroscopy is performed to assess bridge effects on energy transfer and charge separation in molecular junctions. A short, conjugated bridge can facilitate charge separation from both donor and acceptor, whereas in ...
Tilley T.D.   +6 more
doaj   +1 more source

Balancing charge generation and voltage loss toward efficient nonfullerene organic solar cells

open access: yesMaterials Today Advances, 2020
The inherently large exciton binding energy for photo-generated electron-hole pairs has hindered the charge generation and photons utilization in organic solar cells (OSCs) for decades, thereby constraining their performance to an inferior regime with ...
Y. Xie, H. Wu
doaj   +1 more source

Home - About - Disclaimer - Privacy