Practica Mecanica Cuantica - Prctica 4 Efecto Fotoelctrico...

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Práctica 4 Efecto Fotoeléctrico de una Celda de Silicio Policristalino Álvarez, Jorge; Fadul, Yitzhak; Pablo, Álvaro; Prado, Jorge; Ramírez, Hugo; Serrato, Ricardo Universidad Tecnológica de Querétaro. Av. Pie de la cuesta No. 2501, Col. Unidad Nacional. Querétaro. Resumen En la práctica se midió la intensidad luminosa y se tomó el voltaje que producía la celda fotovoltaica y al final lograr prender un led de 1.5 v. Con un fotómetro se midió la potencia en el que se encontraba expuesta la celda fotovoltaica. Una vez obtenida la potencia, se midió el voltaje que producía la celda, en este caso se obtuvieron dos mediciones ya que se contaba con dos celdas de distinto tamaño en el cual nos ofrecía un voltaje distinto en cada uno. Se utilizó un led para cada celda con el fin de que este prendiera. El voltaje obtenido para cada una fue de 1.12 V, mientras que el otro 2.58 V, el led que se utilizó para cada celda no prendió, por lo que se tuvo que formar un circuito de serie para obtener un voltaje mucho mayor y así poder encender el led. Abstract In practice, the luminous intensity was measured and the voltage produced by the photovoltaic cell was taken and in the end a 1.5 v led was achieved. With a photometer the light intensity in which the photovoltaic cell was exposed was measured. Once the intensity was obtained, we measured the voltage produced by the cell, in this case two measurements were obtained since there were two cells of different size in which we offered a different voltage in each one. A led was used for each cell in order for it to turn on. The voltage obtained for each one was 1.12 V, while the other 2.58 V, the led that was used for each cell did not light, so a series circuit had to be formed to obtain a much higher voltage and thus to be able to turn on the led. Introducción Cuando un fotón incide sobre un cátodo de material fotosensible, éste emite un electrón con una energía cinética que depende de la frecuencia del fotón y del material del cátodo.
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