Analytical model for the photocurrent-voltage characteristics of bilayer MEH-PPV/TiO2 photovoltaic devices

In the article we introduce the experiment of the photostimulation effect in the tunneling conductivity of free-standing thin C-Au films. We observe a sharp increase of the conductivity of hybrid film due to the electromagnetic exciting at the frequencies which are close to the plasmon resonance of gold nanoparticles. The use of carbyne threads as a stabilizing matrix makes it possible to obtain free-standing thin films that demonstrate a good structural stability. The tunnel current-voltage measurements demonstrate a strong dependence of the current value on the intensity of green laser radiation used to photostimulate thin C-Au in area of the measuring experiment.

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“…where q is an electron charge, G is the photoelectric gain, Ф is the luminous flux density (Chen et al 2011).…”

Section: Analytical Model Describing the Current-voltage Dependence Omentioning

confidence: 99%

Photosensitive free-standing ultra-thin carbyne–gold films

et al. 2019

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“…I P is here considered as voltage independent while, under some conditions, it may be voltage dependent. 20…”

Section: Photovoltaic Cell Modelsmentioning

confidence: 99%

“…It has only one hidden layer, which has been proven satisfactory for two-variable function approximation. 20 Indices: “in”, “h”, and “o”, in this figure, stand for input, hidden, and output, respectively. For the set of weights, w ( k, l ), connecting the input and the hidden layer we have: k = 1, 2, …, m in , l = 1, 2, …, m h , while for the set connecting the hidden and output layer we have: k = 1,2, …, m h , l = 1,2, …, m o .…”

Section: Linear Model Of a Forward-biased Photovoltaic Cellmentioning

confidence: 99%

A small-signal model of a solar cell

et al. 2014

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Starting with the experience that the output voltage and the output current of a photovoltaic panel are not pure direct current constants due to the inevitable connection to a converter (or inverter) that is working as a switching system, we came to the conclusion that interest exists for the behavior of the solar cell at the frequencies of the harmonics of the converter’s switching frequency, which is subject to change according to the maximum power-point tracking. In other words, a need exists for frequency domain characterization of the solar cell, for which a linear small-signal model is necessary. To enable simulation for small signals, development of a linear reactive model was considered. Since a one-diode large-signal model already exists, it was used as a basis for the extraction of the parameters of the small-signal model. The new model was represented in the form of a parallel RC two-terminal circuit, the R and C being functions of the photocurrent (acting as a map of the illumination) and the diode voltage. Since the R and C of the model are quiescent-point dependent, their values as a function of the illumination and the diode voltages were approximated by artificial neural networks (ANNs). Separate ANNs were created for modeling R and C. To verify the model, two small-signal simulations were performed. The first one was done with the existing nonlinear model, while the second was done with the new linear model (running the ANNs). Excellent agreement was obtained.

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Recent advances in hybrid solar cells based on metal oxide nanostructures

Meng

et al. 2016

Synthetic Metals

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Analytical model for the photocurrent-voltage characteristics of bilayer MEH-PPV/TiO2 photovoltaic devices

Cited by 10 publications

References 51 publications

Photosensitive free-standing ultra-thin carbyne–gold films

Photosensitive free-standing ultra-thin carbyne–gold films

A small-signal model of a solar cell

Recent advances in hybrid solar cells based on metal oxide nanostructures

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