I have a Maple code that calculates number of photons from absorbed in the blackbody spectrum, so its no.photons vs eV. I am trying to modify this to find no. of photons absorbed in the Solar spectrum. Any ideas or guidance. MAPLE FILE ATTACHED.
get the number of photons in that band by dividing the energy at that wavelength (from the solar spectrum) by the energy of a single photon of the same wavelength.
Dear Sourav Das
Apparently, Global radiation with both the sun overhead is often referred to as "Air Mass 1 Global" (AM 1G) radiation. The extraterrestrial spectrum is known as the "Air Mass 0" spectrum since it goes through no air mass.
Kind Regards
Qamar Ul Islam
Dear Sourav Das ,
Hope you are well!
The incident photon flux on the material will be partly reflected, partly absorbed and partly transmitted. If the absorber material is sufficiently thick, it will absorb all photons entered to it after reflection.
I will assume that your material is sufficiently thick such that full absorption occurs then assuming the photon flux is F photons/ cm^2/s in at a specific wavelength, then one can express the absorbed flux as
Fa= (1- R) F where R is the reflectance. The reflectance R= roh^2 where roh is the reflection coefficient.
If the materiel thickness is limited then one has to use the absorption coefficient to calculate Fa
Fa= (1-R) F ( 1 - exp -alpha d)
where alpha is the absorption coefficient at the specific wavelength and d is the thickness of the material.
You can find such derivations in the book chapter:Chapter Solar cells and arrays: Principles, analysis and design
Best wishes
Youshould find number of photons for each wavelength of spectrum by following equation:
N(photon)=I/(hc/λ)
There, λ - wavelength of light, I - intensity of light, which of wavelength is λ.
Then, by using quantum yield function you can find number of absorbed photons.
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