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Article
Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands
The photoconductivity of condensates of lead-sulfide quantum dots (QDs)—QD solids—with various organic ligands is studied. It is demonstrated that the QD solid photoconductivity increases exponentially with a ...
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Article
Influence of the surface ligand molecules length on the optical properties and photoconductivity of PbS quantum dot condensates
The influence of ligands—organic molecules on the quantum dot (QD) surface—on the optical properties of thin-layer condensates of lead sulfide QDs and the photoconductivity of diode structures based on them ha...
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Article
Field diffusion in disordered organic materials under conditions of occupied deep states
A simple analytical model of the field-diffusion coefficient is developed for moderate carrier concentrations. Hop** transport is described by the multiple-trap** model based on the transport-level concept...
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Article
Theory of the anomalous diffusion of carriers in disordered organic materials under conditions of the CELIV experiment
Analytical solutions for the transient current in the СELIV (Charge Extraction by Linearly Increasing Voltage) experiment are found in both the quasi-equilibrium (taking into account field-enhanced diffusion) ...
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Article
Simulation of the polarization current of geminate pairs in an organic material with Gaussian disorder
The time-dependent photocurrent caused by the transient polarization of geminate pairs by an electric field after a short generation pulse is numerically simulated by the Monte Carlo method within Gaussian-dis...
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Article
Current–voltage characteristics of disordered organic layers under space-charge-limited conditions based on the transport level concept
An analytical model for calculating the current–voltage characteristic of disordered organic layers with unipolar conduction is developed for conditions when the injected carrier density is sufficiently high t...
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Article
Features of the current-voltage characteristics in thin conductive layers of organic light-emitting diodes
The current-voltage characteristic of a thin organic layer located between conductive electrodes is analytically modeled. To this end, a theoretical model is developed which considers not only the interaction ...
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Article
Analytical model of drift and diffusion of charge carriers in organic light-emitting diodes in the presence of a space charge
A relatively simple analytical model taking into account energy disorder and space charge effects is proposed for calculating the current-voltage characteristics for the monopolar regime of charge transfer in ...
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Article
Numerical modeling of the polarization current of geminate pairs in disordered polymers with traps
The time dependences of the polarization current of geminate pairs in disordered media are simulated by the Monte Carlo numerical method. A model of hop** transport with exponential energy distribution of th...
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Article
Quasi-equilibrium hop** drift and field-stimulated diffusion in ultrathin layers of organic materials
Hop** transport (drift and diffusion) of charge carriers is studied by numerical Monte Carlo simulation at the quasi-equilibrium initial energy distribution of charge carriers in ultrathin disordered organic...
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Article
Effect of excessive pressure on the drift mobility of charge carriers in poly(diphenylene phthalide) films
The electron-hole transport in poly(diphenylene phthalide) films has been investigated. The dependence of the drift mobility of charge carriers on the excessive mechanical pressure has been studied using the t...
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Article
Numerical simulation of time-dependent geminate recombination in polymers
Numerical Monte Carlo simulation has been used to calculate the time dependences of the probability of survival of geminate pairs and geminate recombination. The transport of geminate pairs occurs by hop** b...
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Article
Nonequilibrium transport of charge carriers in terms of the multiple-trap** model with a Gaussian energy distribution of traps
A software package is proposed for the numerical solution of equations in terms of the multipletrap** model with a Gaussian energy distribution of traps for the time-of-flight experiment. The results are com...
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Article
The mechanism of metal conductivity over the interface between organic insulators
The hop** mobility of charge carriers (both at the surface and in the bulk) is analyzed theoretically in the presence of electron–hole pairs. A physical model is suggested for the metal conductivity over the...
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Article
Field diffusion and nonequilibrium electron transport in polymers
Different modes of electron transport in polymers were comparatively analyzed in increasing order of the degree of nonequilibrium: equilibrium, quasi-equilibrium, quasi-dispersive, and dispersive. Weak nonequi...
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Article
Mechanism of metallic conductivity at the interface of organic dielectrics
A physical model of the metallic-type conductivity at the interface between an organic semiconductor or dielectric and a metals or another organic material is proposed. The conductivity arises due to the forma...
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Article
Transient electroluminescence and anomalous dispersion of charge carriers in thin polymer films
The electroluminescence and charge carrier transport in an organic light-emitting diode based on a thin polymer film are investigated. The initial kinetics of transient electroluminescence is analyzed theoreti...
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Article
The hop** kinetics of geminate recombination in organic crystals
The time dependences of the survival probability, recombination rate, and polarization current of geminate pairs were obtained by the Monte Carlo method for various lattice parameter values. Quantitative crite...
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Article
Transient current in thin layers of disordered organic materials under conditions of nonequilibrium charge carrier transport
The theoretical model of nonequilibrium hop** charge-carrier transport in disordered organic materials based on the concept of the transport level is applied to the case of Gaussian energy distribution of lo...
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Article
Equilibrium energy distribution of localized carriers in disordered semiconductors subjected to an external electric field at low temperature
An equilibrium energy distribution of charge carriers is possible in the 3D case in disordered semiconductors with a sufficiently rapidly decreasing density of localized states at low temperatures when the con...
