Solar-energy photoconverters based on thin films of organic materials

Салихов, Р. Б.; Biglova, Yu. N.; Yumaguzin, Yu. M.; Salikhov, T. R.; Мифтахов, М. С.; Мустафин, А. Г.

doi:10.1134/s1063785013100106

Cited by 18 publications

(11 citation statements)

References 10 publications

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“…The obtained values of HOMO and LUMO indicate that the polyanilines studied in our work can be used for the development of new organic solar cells [36,37]. The short-circuit current of the photo-converter is closely related to the difference in the energy between the HOMO of the PANI (donor) and the LUMO of the acceptor.…”

Section: Charge Transport In Thin Polymer Filmsmentioning

confidence: 53%

“…The technique of formation of thin films of polyanilines and fullerene-containing polymers by vacuum deposition from a Knudsen effusion cell was used [36]. The length of the cylindrical cell was 25 mm, the internal diameter was 4 mm and the working temperature varied within the range 500-650 K. Thermal heating of fullerene-containing monomers (FCMs) during deposition led to their polymerization.…”

Section: Organic Solar Cells Based On Thin Polymer Filmsmentioning

confidence: 99%

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New Organic Polymers for Solar Cells

Салихов¹,

Biglova²,

Мустафин³

2018

Emerging Solar Energy Materials

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From the moment of conductive polyacetylene discovery, semiconducting polymers and other organic thin films and multilayers are important for a wide range of applications, including electronics, photovoltaics and sensors. The main idea of this chapter is the synthesis of new conjugated donor and acceptor polymers and development of organic solar cells on their basis. As donor polymers were used modified polyanilines (PANIs) and its dopants, as acceptor compounds-the fullerene C 60 derivatives. Experimental prototypes of organic solar cells were obtained on the basis of binary donor-acceptor layers and bulk heterojunctions, consisting of novel polyaniline derivatives and fullerene-contained polymers. The current-voltage characteristics of solar cells were measured and the values of such parameters, such as open-circuit voltage, short-circuit current, fill factor and power conversion efficiency, were calculated. Comparison of parameters of the various types of organic solar cells was held.

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Section: Charge Transport In Thin Polymer Filmsmentioning

confidence: 53%

Section: Organic Solar Cells Based On Thin Polymer Filmsmentioning

confidence: 99%

New Organic Polymers for Solar Cells

Салихов¹,

Biglova²,

Мустафин³

2018

Emerging Solar Energy Materials

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“…For the determination of the photovoltaic parameters of the samples and qualitative evaluation of the effectiveness of solar energy conversion, the current density-voltage (abbreviated as current-voltage [8,9]) characteristics were measured ( Figure 6). White light illumination was used with an intensity of 50 mW/cm 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the development of cheap photo-electric converters has become a subject of great interest in the last years [1][2][3][4]. One of the perspective directions of the depreciation of phototransformation is the development of solar elements on the basis of polymers [7,8]. However, at the moment, the effectiveness of the phototransformation of such solar elements and their stability are low.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Photoelectron Properties of Polymer Films with Silicon Nanoparticles

2019

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Hybrid samples consisting of polymer poly-3(hexylthiophene) (P3HT) and silicon nanoparticles were prepared. It was found that the obtained samples were polymer matrixes with conglomerates of silicon nanoparticles of different sizes (10–104 nm). It was found that, under illumination, the process of nonequilibrium charge carrier separation between the silicon nanoparticles and P3HT with subsequent localization of the hole in the polymer can be successfully detected using electron paramagnetic resonance (EPR) spectroscopy. It was established that the main type of paramagnetic centers in P3HT/silicon nanoparticles are positive polarons in P3HT. For comparison, samples consisting only of polymer and silicon nanoparticles were also investigated by the EPR technique. The polarons in the P3HT and Pb centers in the silicon nanoparticles were observed. The possibility of the conversion of solar energy into electric energy is shown using structures consisting of P3HT polymer and silicon nanoparticles prepared by different methods, including the electrochemical etching of a silicon single crystal in hydrofluoric acid solution and the laser ablation of single-crystal silicon in organic solvents. The results can be useful for solar cell development.

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“…In the recent years electrophysical properties of highmolecular poly-conjugated compounds -electroactive polymers are studied intensively. It has been shown that the representatives of this class -polyanilines (PANI), specifically thin film structures on their base, are promising for the development of nanoelectronic devices such as LEDs, solar cells and field transistors [1]. To provide optimum work of electronic devices the development of special technologies of polymer coatings with controlled thickness and specified morphology for different substances are relevant.…”

mentioning

confidence: 99%

Emission and conductive properties of polyaniline thin films

Yumaguzin¹,

Salikhov²,

Shayakhmetov³

2015

LoM

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Thin films of polyaniline were prepared by thermal vacuum deposition from the Knudsen effusion cell. The surface condition and thickness of the deposited films were monitored on the basis of analysis of AFM images obtained by NanoScan 3D. Conducting properties of the films were studied at different sputtering conditions. To increase the conductivity of polyaniline layers, the temperature conditions of deposition from the Knudsen cell were selected. The temperature range of 500-550 K proved to be the most optimal. In addition, protonation of the freshly prepared films in vapors of hydrochloric acid solution was carried out. For polyaniline films a conductivity value of 1.0 mS / cm was achieved as a result. The main part of present work investigates polyanyline thin films with thickness of 30 nm on the tungsten-spike cathodes by means of field-emission measurements. The emitted electron energy distribution as a function of the electric field was obtained. The current-voltage characteristics and coating structure were also studied with the use of a field-emission microscope. The results obtained were compared with those of a pure-tungsten cathode. It is experimentally shown increasing of emissivity of tungsten tip coated with a thin film of polyaniline. The effective temperature of emitted electrons from tip with a film of polyaniline was determined according to the analysis of the energy distribution. Evaluation of electron temperature leads to a value of about 2300 K, which corresponds to 0.2 eV on the energy scale. The paper considers the phenomenon of charge carriers transfer in the system of metal-polyaniline-vacuum and the model of the energy bands of metal-polymer film contact.

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Solar-energy photoconverters based on thin films of organic materials

Cited by 18 publications

References 10 publications

New Organic Polymers for Solar Cells

New Organic Polymers for Solar Cells

Investigation of Photoelectron Properties of Polymer Films with Silicon Nanoparticles

Emission and conductive properties of polyaniline thin films

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