Relationship between wavelength and voltage?

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SUMMARY

The discussion focuses on the relationship between the wavelength of light and voltage in solar cells, specifically through an experiment using colored filters on a single-celled solar panel. The participant observed a linear relationship in their plotted graph but sought clarification on the underlying principles. It was established that the intensity of light affects voltage, but the relationship is not strictly linear due to material properties. Additionally, the voltage output of a solar cell is influenced by the current generated.

PREREQUISITES
  • Understanding of solar cell operation principles
  • Knowledge of light wavelength and its properties
  • Familiarity with voltage and current relationships in electrical circuits
  • Basic graphing skills for data analysis
NEXT STEPS
  • Research the impact of light intensity on solar cell voltage output
  • Study the non-linear characteristics of materials in photovoltaic applications
  • Learn about the relationship between current and voltage in solar cells
  • Explore advanced solar cell design and efficiency optimization techniques
USEFUL FOR

This discussion is beneficial for physics students, solar energy researchers, and anyone interested in understanding the electrical characteristics of solar cells and their response to varying light conditions.

maiae
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Hi all,
I am in introductory physics and we are doing a self-designed lab. For my lab, I wanted to study the relationship between the wavelength of light and voltage. To do this, measured how much voltage drop there was in a single celled solar panel when I put colored filters over a light that I used to shine light on the solar cell. The relationship between wavelength and voltage as I have it plotted on a graph appears to be linear, but without knowing what the relationship is supposed to be, it's a little hard to determine. I think that this should have to do with the intensity of the light supplied to the system, but I can't think of a way that these would be related. Any help would be much appreciated.
Thanks!
 
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Yes it does have to do with the intensity, but the properties of materials are not necessarily linear.

The voltage of a solar cell also depends on the current.

See this article for more detailed info.
https://en.wikipedia.org/wiki/Solar_cell
 

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