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Topic: Question on a lab. Efficiency of solar cells  (Read 2469 times)

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Offline yehgermeister

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Question on a lab. Efficiency of solar cells
« on: July 24, 2009, 03:19:37 PM »
So I'm doing this lab where I made a solarimeter. I used a 9 volt battery, a solar cell, and a voltmeter/ammeter. I have films of different colors (no film, green, orange, blue) which I would place over the solar cell in sunlight to record their voltages and currents.

what i am stuck on is i am asked to "prepare a table and rough plot of the % of maximum voltage vs. color of incident light from the data obtained". i swear that's all the book tells me. my lab book is known for being vague with directions.

how do this when i only have the voltage, current, and power (multiplied voltage and current).

Offline marquis

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Re: Question on a lab. Efficiency of solar cells
« Reply #1 on: July 24, 2009, 04:17:42 PM »
You have additional data.  If I understand correctly, you obtained current and voltage information with the different filters in place.

You could check the center wavelength of each filter and make a plot (wavelength vs efficiency) based on that.

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