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Espectroscopia de impedancias aplicada al análisis de células solares

Espectroscòpia d'impedàncies aplicada a l'anàlisi de cèl·lules solars
Authors: Sinde Carbajo, Daniel Carlos;

Espectroscopia de impedancias aplicada al análisis de células solares

Abstract

En el presente proyecto se ha realizado la medición de células solares mediante espectroscopia de impedancias. El principal aporte realizado en el proyecto es la fabricación de placas de circuito impreso que permiten contactar las células solares directamente con la máquina de medidas sin necesidad de cables. De esta forma, la capacidad y la inductancia parásitas se reducen drásticamente consiguiendo medidas sin distorsión a altas frecuencias (hasta 15 MHz). Además, mediante la espectroscopia de impedancias se consigue obtener la respuesta frecuencial de los dispositivos y separar la contribución en la resistencia de cada una de las capas físicas que forman la estructura de la célula solar, obteniendo parámetros que modelan el comportamiento como son el factor de idealidad, el tiempo de vida efectivo o el radio del contacto de base.

Al present projecte s’ha realitzat la mesura de cèl·lules solars mitjançant l’espectroscòpia d’impedàncies. La principal aportació realitzada al projecte és la fabricació de plaques de circuit imprès que permeten contactar cèl·lules solars directament amb la màquina de mesures sense necessitat de cables. D’aquesta forma, la capacitat i la inductància paràsites es redueixen dràsticament aconseguint mesures sense distorsió a altes freqüències (fins a 15 MHz). A més, mitjançant l’espectroscòpia d’impedàncies s’aconsegueix obtenir la resposta freqüencial dels dispositius i separar la contribució a la resistència de cadascuna de les capes físiques que formen l’estructura de la cèl·lula solar, obtenint paràmetres que modelen el comportament com el factor d’idealitat, el temps de vida efectiu o el radi del contacte de base.

At the present project a set of measurements of solar cells have been done with the use of Impedance Spectroscopy. The main fact of the project is the fabrication of printed circuit boards that allowed the direct contact of the solar cells with the measurement machine without the necessity of cables. In this way, the parasitic capacity and inductance are considerably reduced allowing measurements without distortion at high frequencies (until 15 MHz). In addition, with impedance spectroscopy it is possible to get the frequency response of the devices and separate the contribution in the resistance of each one of the physical layers that forms the solar cell structure, obtaining parameters that models the behavior like the ideality factor, the effective life time or the radius of the base contact.

El proyecto consiste en medir espectroscpías de impedancias en células solares, representarlas en Bode y Nyquist, y a partir de dichas representaciones extraer un modelo circuital que sirva para entender el funcionamiento de dichas células.

Country
Spain
Keywords

Solar cells, Laser fired contacts, spectroscopy, PCB, Impedance spectroscopy, Impedance, MIS, Espectroscòpia d'impedància, :Enginyeria de la telecomunicació [Àrees temàtiques de la UPC], solar cell, Cèl·lules solars, Àrees temàtiques de la UPC::Enginyeria de la telecomunicació, PCB.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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