Publicado

2018-07-01

Herramienta de software para determinar constantes ópticas en celdas solares tipo película delgada

A software tool to determine optical constants in thin film solar cell

Palabras clave:

software, constantes ópticas, películas delgadas semiconductoras, celdas solares (es)
manuscript software, optical constants, semiconductor thin films, solar cells (en)

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En este trabajo se desarrolló una herramienta de software que permite determinar las propiedades ópticas de materiales semiconductores, esta herramienta es de utilidad para investigadores que trabajan en la caracterización de películas delgadas semiconductoras. El software calcula las constantes ópticas: índice de refracción (n), coeficiente de absorción (α) y brecha de energía prohibida (Gap), además del espesor aproximado de la película; con el programa desarrollado se calcularon las constantes ópticas de películas delgadas de ZnS, SnS:Bi y SnS2:Bi, que son usadas como capas buffer y absorbentes en celdas solares, en este trabajo se presentan los resultados obtenidos con una película de SnS2:Bi. El software fue creado en el lenguaje de programación Python dentro de una interfaz sencilla inglés-español y para desarrollarlo se tuvo en cuenta el método propuesto por Swanepoel, el cual toma como base el espectro de transmitancia experimental del material semiconductor.
In this work, it was developed a software tool that allows determining the optical properties of semiconductor materials, this tool is useful for researchers working on the characterization of semiconductor thin films. The software calculates the optical constants: index of refraction (n), coefficient of absorption (α) and prohibited energy gap (Gap), in addition to the approximate thickness of the film; with the developed program were calculated optical constants of thin films of ZnS, SnS:Bi, and SnS2:Bi, which are used as buffer layers and absorbers in solar cells, this paper presents the results obtained with a SnS2:Bi film. The software was created in the Python programming language within a simple English-Spanish interface and in order to develop it, the method proposed by Swanepoel, based on the experimental transmittance spectrum of the semiconductor material, was taken into account.

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