Towards improved efficiency of bulk-heterojunction solar cells using various spinel ferrite magnetic nanoparticles

Коваленко, А. В.; Yadav, Raghvendra Singh; Pospı́šil, J.; Zmeškal, Oldřich; Karashanova, Daniela; Heinrichová, Patricie; Vala, Martin; Havlica, Jaromír; Weiter, Martin

doi:10.1016/j.orgel.2016.09.033

Cited by 30 publications

(14 citation statements)

References 38 publications

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“…Unas de las heterouniones de gran campo investigativo son las denominadas bulkheterjunction (bhj; en español, células solares de heterounión de polímero a granel), que prometen una perspectiva para su desarrollo debido a ventajas como costos bajos, flexibilidad de la célula, peso ligero y capacidad de procesamiento simple [48]. En ello, se han observado eficiencias de conversión de potencia o de fotoconversión para este tipo de células que han alcanzado un 11,7% [48]- [50].…”

Section: Células Orgánicas Fotovoltaicas De Heterouniónunclassified

Tendencias en ingeniería de materiales para la fabricación de células solares fotovoltáicas

Hurtado¹,

Rojas²

2017

ing. Solidar

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Introducción: el artículo de revisión fue desarrollado durante el segundo semestre del 2016 y el primero del 2017 en la Facultad de Ingeniería Ambiental de la Universidad Santo Tomás. La energía solar fotovoltaica ha adquirido un importante papel en el contexto global por el uso de fuentes renovables y disminución de impactos ambientales, además de ser un participe influyente en la satisfacción de la demanda energética actual. No obstante, esta cuenta con limitaciones como la dependencia de la disponibilidad de radiación y el uso de silicio como materia prima de las células solares. Metodología: se realizó un estado del arte de diferentes bases de datos consultadas, en su mayoría Science Direct y Scopus, sobre los diferentes materiales alternativos y tendencias actuales, y su perspectiva de funcionamiento e implementación. Resultados: se exponen las células solares que están empleando diversos materiales, dentro de las cuales destacan las de Teluro de Cadmio (CdTe) que presentan características de bajo costo y considerables eficiencias. Conclusión: las células de cobre, indio, galio, selenio/azufre (cigs) presentan como característica principal el alto coeficiente de adsorción; no obstante, el gran reto por superar es llevar a cabo su implementación en un ámbito industrial. Las células solares orgánicas presentan una alta eficiencia y un bajo costo para su posible uso en el contexto colombiano.

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Section: Células Orgánicas Fotovoltaicas De Heterouniónunclassified

Tendencias en ingeniería de materiales para la fabricación de células solares fotovoltáicas

Hurtado¹,

Rojas²

2017

ing. Solidar

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“…Magnetic properties of nanoparticles are used widely in many fields: biology (biosensors) [1][2][3], medicine (hyperthermia [4,5], MRI -magnetic resonance imaging [6]), chemistry (waste water treatment [7]) as well as semiconductor technology (development of magnetic storage devices [8], photovoltaic cells [9,10] etc). The gold containing nanoparticles are of particular interest due to the special techniques developed for producing bioelectrical signal generated by biomolecules immobilized at the nanoparticle surface [11,12].…”

Section: Introductionmentioning

confidence: 99%

NMR study of Au/Al nanosytems in solution

Kislyuk

Melnyk

Buryak

et al. 2019

Journal of Electrical Engineering

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Nuclear magnetic resonance spectroscopy (NMR) 1H, 35Cl, 27Al and 13C was applied to study underlying processes at the various stages of the synthesis of Au/Al nanoparticles. 35Cl spectrum was downfield shifted by 2.6 ppm as to the reference signal of the hydrated Cl− ion in NaCl solution. The evolution of the NMR spectra points to the formation of the stabilized shell around the gold containing nucleus. The shell restricts the supply of the reducing agents, which is the condition for the formation of Au2+ state at the concentration range in question. The electron paramagnetic resonance (EPR) spectra reveal formation of both Au2+ (g = 2.17) and Au+ (g < 2) intermediates incompletely reduced as well as Au0 clusters (g = 2.062) with odd number of atoms. The latter is coupled in many cases by the narrow signal with g = 2.0048 attributed to the radical in the supporting surrounding (tannin containing matrix in our case).

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“…Noble metal nanospecies attract attention both researchers from various fields [1][2][3] (biologists, chemists, physicists) and practitioners [4][5][6] (medical professionals, pharmacologists, engineers). The reasons of a permanent interest to them are their bio-compatibility (in most cases); appearance of new optical and magnetic properties absent in the bulk materials, relatively simple and low cost technology of their fabrication.…”

Section: Introductionmentioning

confidence: 99%

A conceptual approach to the formation of paramagnetic nanospecies of noble metals

Kislyuk

Melnyk

Bondar

et al. 2019

Journal of Electrical Engineering

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The general concepts are analyzed regarding the approach for the formation of paramagnetic species of noble metals, with a non-rigid (labile) molecule being used as a supporting matrix. The formation of the metal nanospecies follows three stages: (i) the metal ions are captured by the matrix, (ii) the reducing agent causes formation of individual atoms separated by the matrix fragments, (iii) the individual atoms agglomerate due to conformational transformations of the labile molecule-matrix. This algorithm is realized in two distinct systems: Ag-containing nanospecies embedded within the system of polyacrylic acid (PAA) chains grafted to the film of fluorinated ethylene propylene copolymer (FEP) and Au-containing nanospecies in the free matrix of tannin-citrate- oxo-hydroxo aluminate. The evolution of the electron paramagnetic resonance (EPR) spectra while cooling down demonstrates the appearance of the exchange interaction which is suppressed at higher temperatures by the vibrational modes of the molecule-matrix. The role of the oxo-hydroxo aluminate form is one of a molecular motor sorting the individual nanospecies by their size and charge state.

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Towards improved efficiency of bulk-heterojunction solar cells using various spinel ferrite magnetic nanoparticles

Cited by 30 publications

References 38 publications

Tendencias en ingeniería de materiales para la fabricación de células solares fotovoltáicas

Tendencias en ingeniería de materiales para la fabricación de células solares fotovoltáicas

NMR study of Au/Al nanosytems in solution

A conceptual approach to the formation of paramagnetic nanospecies of noble metals

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