In solar cell, I need to measure the transparency of an anode film and need to draw a plot between transparency and thickness of a film at one particular wavelength.
You can use UV-Vis absorption spectrophotometer for measuring the transperency of anode thin film. In this process you need to deposite series of thinfilms with different thickness and record the transmission spectra(% transmission vs wave length), from the plots you can fix one particular wave length(say 550nm) then you can plot % transmission Vs thickness of your thinfilm.
As i know, measurement of absorption using uv-vis spectrophotometer of a sample in the container not a film. how to work with films using uv-vis spectrophotometer.
Can you tell me the model of your spectrophotometer so that I can try to explain .
Basically the principle behind measuring thin films is the is the same as for solutioins - your compare the the transmission of light through your substrate+thin films with the transmission of the substrate as reference (baseline). You will need away to place your samples perpendicular to the light beem (there might be a special holder with the apparatus - if not you have to improvise a setup that makes this possible). Notice that this will give you the transmission of the THIN FILM not to be mistaken for the electrode/substrate - if you want the transmission of the latter you must use air as the reference.
Good luck
how to calculate trnasperancy of packaging films
is this formula correct T= -log(franctional transmittence)/thickness of film
Transparency=- log (transmittance divided by sample thickness)
Transmittance usually calculates at 280 and 600 nanometer range.
Hello,
Hassan Yousefnia
I tried to find the reference of the transparency equation, but I could not, can you please provide me with the reference?
Kind regards
Kholoud
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