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The effective quasistatic conductivity of composite polymeric electrolytes is studied in terms of a hard-core--penetrable-layer model. Used to incorporate the interface phenomena (such as amorphization of the polymer matrix around filler…

材料科学 · 物理学 2019-11-05 M. Ya. Sushko , A. K. Semenov

The band structure and electronic properties in a series of vinylene-linked heterocyclic conducting polymers are investigated using density functional theory (DFT). In order to accurately calculate electronic band gaps, we utilize hybrid…

材料科学 · 物理学 2015-03-13 Bryan M. Wong , Joseph G. Cordaro

The electronic structure of the conjugated polymer, polyaniline, has been studied by resonant and nonresonant X-ray emission spectroscopy using synchrotron radiation for the excitation. The measurements were made on polyaniline and a few…

材料科学 · 物理学 2012-01-05 M. Magnuson , J. -H. Guo , S. M. Butorin , A. Agui , C. Såthe , J. Nordgren , A. P. Monkman

The detailed investigation of electronic and magnetic properties of polymeric coordination materials with accurate ab initio quantum mechanical methods is often computationally extremely demanding because of the large number of atoms in the…

We extend density matrix embedding theory to periodic systems, resulting in an electronic band structure method for solid-state materials. The electron correlation can be captured by means of a local impurity model using various choices of…

强关联电子 · 物理学 2019-09-27 Hung Q. Pham , Matthew R. Hermes , Laura Gagliardi

Phenyl-disubstituted polyacetylene (PDPA) is an organic semiconductor which has been studied during the last years for its efficient photo-luminescence. In contrast, the molecular geometry, providing the basis for the electronic and optical…

材料科学 · 物理学 2010-08-02 Priya Sony , Alok Shukla , Claudia Ambrosch-Draxl

The increased energy and power density required in modern electronics poses a challenge for designing new dielectric polymer materials with high energy density while maintaining low loss at high applied electric fields. Recently, an…

We study ground states of a hybrid system consisting of a polymer and an attractive nanowire by means of computer simulations. Depending on structural and energetic properties of the substrate, we find different adsorbed polymer…

软凝聚态物质 · 物理学 2011-03-10 Thomas Vogel , Michael Bachmann

We report on a theoreticl study of the electronic structure of quasiperiodic, quasi-one-dimensional systems where fully three dimensional interaction potentials are taken into account. In our approach, the actual physical potential acting…

凝聚态物理 · 物理学 2009-10-28 E. Macia , F. Dominguez-Adame

Controlling a thickness dependence of electronic properties for two-dimensional (2d) materials is among primary goals for their large-scale applications. Herein, employing a first-principles computational approach, we predict that Si…

材料科学 · 物理学 2018-02-14 Oleksandr I. Malyi , Kostiantyn V. Sopiha , Ihor Radchenko , Ping Wu , Clas Persson

In this note, we calculate the electronic properties of a realistic atomistic model of amorphous graphene. The model contains odd membered rings, particularly five and seven membered rings and no coordination defects. We show that…

强关联电子 · 物理学 2009-12-04 V. Kapko , D. A. Drabold , M. F. Thorpe

Electronic structures and optical excitations in Moebius conjugated polymers are studied theoretically. Periodic and Moebius boundary conditions are applied to the tight binding model of poly(para-phenylene), taking into account of the…

材料科学 · 物理学 2007-05-23 Kikuo Harigaya

We examine the electronic ground state of acenes with different number of fused benzene rings (up to 40) by using first principles density functional theory. Their properties are compared with those of infinite polyacene. We find that the…

化学物理 · 物理学 2008-05-18 De-en Jiang , Sheng Dai

Modeling the electronic and optical properties of organic semiconductors remains a challenge for theory, despite the remarkable progress achieved in the last three decades. The complexity of these systems, including structural (dis)order…

Phosphorene, a single atomic layer of black phosphorus, has recently emerged as a new twodimensional (2D) material that holds promise for electronic and photonic technology. Here we experimentally demonstrate that the electronic structure…

The electronic behavior of polymerized fullerite structures, ranging from one-dimensional to three-dimensional polymers, was studied using density functional theory. The bandgap across these structures decreases with the rise of sp3-carbon…

材料科学 · 物理学 2023-12-20 Jorge Laranjeira , Leonel Marques , Manuel Melle-Franco , Karol Strutynski

Employing a rigorous theoretical method for the construction of exact many-electron ground states we prove that interactions can be employed to tune a bare dispersive band structure such that it develops a flat band. Thereby we show that…

强关联电子 · 物理学 2010-12-30 Zsolt Gulacsi , Arno Kampf , Dieter Vollhardt

Conjugated polymers are soft, one-dimensional conductors that admit complex interactions between their polymeric, conformational degrees of freedom and their electronic ones. The presence of extended electronic states along their backbone…

软凝聚态物质 · 物理学 2011-07-29 Jeremy D. Schmit , Alex J. Levine

Designing molecular organic semiconductors with distinct frontier orbitals is key for the development of devices with desirable properties. Generating defined organic nanostructures with atomic precision can be accomplished by on-surface…

Real-space self-interaction corrected (time-dependent) density functional theory has been used to investigate the ground-state electronic structure and optical absorption profiles of a series of linear oligomers inspired by the natural…

材料科学 · 物理学 2023-05-24 Joelle Mergola-Greef , Bruce F. Milne
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