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Determination of diffusion lengths in organic semiconductors: Correlation with solar cell performances
(Elsevier Science, 2016-04)
Organic semiconductors are promising candidates for future applications in solar energy conversion. Recent investigations of bulk heterojunction (BHJ) semiconductors have suggested a density of states and transport mechanisms ...
Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
(American Physical Society, 2010-09)
We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg ...
Intergranular barrier height fluctuations in polycrystalline semiconductors
(Wiley-VCH, 2017-05)
The punctual character and random nature of the impurity positions in depletion regions lead to inhomogeneities that can significantly affect the potential intergranular barriers at polycrystalline semiconductors and, in ...
Una breve aproximación a las características de los materiales orgánicos empleados como semiconductores en dispositivos electrónicosAn approach to the characteristics of the organic materials used as semiconductors in electronic devices
(Instituto Universitario de la Paz, 2018-10-20)
En este trabajo se realiza una breve descripción de las características de los materiales orgánicos empleados como semiconductores en dispositivos electrónicos. La electrónica orgánica es una tecnología emergente y fascinante ...
Relaxation mechanism for electron spin in the impurity band of n -doped semiconductors
(American Physical Society, 2007-12)
We propose a mechanism to describe spin relaxation in n -doped III-V semiconductors close to the Mott metal-insulator transition. Taking into account the spin-orbit interaction induced spin admixture in the hydrogenic donor ...
Mechanical milled doped Zn-based semiconductors powders for photovoltaic devices
(Pergamon-Elsevier Science Ltd, 2014-05)
Structural characterization of nanocrystalline Al-doped ZnTe semiconductors, obtained by mechanical milling from ZnTe and Al 2O3 powders, is presented. The samples were analyzed by X-ray diffraction (XRD), scanning electron ...
Spin dynamics of hot excitons in diluted magnetic semiconductors with spin-orbit interaction
(American Institute of Physics, 2019-07-16)
We explore the impact of a Rashba-type spin-orbit interaction in the conduction band on the spin dynamics of hot excitons in diluted magnetic semiconductor quantum wells. In materials with strong spin-orbit coupling, we ...
Direct probing of band-structure Berry phase in diluted magnetic semiconductors
(American Physical Society, 2015-06)
We report on experimental evidence of the Berry phase accumulated by the charge-carrier wave function in single-domain nanowires made from a (Ga, Mn)(As, P) diluted ferromagnetic semiconductor layer. Its signature on the ...
Nonperturbative correlation effects in diluted magnetic semiconductors
(American Physical Society, 2016-01)
The effects of carrier-impurity correlations due to a Kondo-like spin-spin interaction in diluted magnetic semiconductors are investigated. These correlations are not only responsible for a transfer of spins between the ...
Chemisorption and sensitivity at semiconductor sensors revisited
(Elsevier Science SA, 2019-04)
In this work we derived the adsorption isotherms for non-dissociative and dissociative chemisorption of oxygen on a semiconductor surface. We extended the Wolkenstein theory for dissociative chemisorption and re-examined ...