Features of the structure and defect states in hydrogenated polymorphous silicon films

Emelyanov, A. V.; Константинова, Е. А.; Форш, П. А.; Казанский, А.Г.; Khenkin, Mark V.; Petrova, N. N.; Теруков, Е. И.; Kirilenko, D. A.; Берт, Н. А.; Konnikov, S. G.; Кашкаров, П. К.

doi:10.1134/s0021364013080079

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…In Figure 4a, the EPR spectra for P3HT samples in similar conditions are shown, both in the dark and under illumination. The EPR spectra are characterized by two overlapped signals: one is poorly resolved, with a g-factor equal to 2.0050 originating from the silicon dangling bonds [26], while the second one has an anisotropic form and is described by the following parameters: g 1 = 2.0030, g 2 = 2.0022, g 3 = 2.0013, extracted from computer simulation. The result of the computer simulation is shown in Figure 3b.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

Investigation of Photoelectron Properties of Polymer Films with Silicon Nanoparticles

2019

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“…Research addressed these issues in a variety of directions, particularly with regard to film deposition. By diluting the process gas(es) in hydrogen, and with appropriate adjustments to deposition parameters, other forms of a‐Si:H‐like materials, such as protocrystalline and polymorphous silicon can be obtained in the transition region between amorphous and microcrystalline silicon growth. These materials have, in general, different microstructure and void fraction from standard a‐Si:H, which offers the possibility of reducing defect density and light induced degradation, and also tuning the energy band gap.…”

Section: Amorphous Silicon – An Evolving Functional Materialsmentioning

confidence: 99%

Silicon Thin Films: Functional Materials for Energy, Healthcare, and IT Applications

Reynolds

Welter

Smirnov

2019

Physica Status Solidi (a)

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The authors review selected topics in the development of hydrogenated amorphous silicon (a‐Si:H), from its emergence some 50 years ago to its present status as a mature thin‐film semiconductor, with market successes including flat‐panel displays, solar modules, and x‐ray scanners. By altering process gas mixtures and deposition conditions, films with a range of atomic, structural, and amorphous/crystalline phase compositions may be deposited, offering tunable bandgap, refractive index, and light‐scattering properties. Films thus “functionalized” have greatly increased scope and utility. Three emerging applications are reported, and more extensive sections on two topics of current importance are presented: 1) Multi‐junction thin film silicon solar cells for water splitting applications; and 2) thin‐film silicon solar cells on flexible substrates.

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Influence of Formation Conditions on Structure and Properties of Paramagnetic Centers in Polymorphous Silicon Films

et al. 2016

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Features of the structure and defect states in hydrogenated polymorphous silicon films

Cited by 8 publications

References 18 publications

Investigation of Photoelectron Properties of Polymer Films with Silicon Nanoparticles

Investigation of Photoelectron Properties of Polymer Films with Silicon Nanoparticles

Silicon Thin Films: Functional Materials for Energy, Healthcare, and IT Applications

Influence of Formation Conditions on Structure and Properties of Paramagnetic Centers in Polymorphous Silicon Films

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