While extinction coefficients are known (see the table above), quantum yields and life times are not.
Quantum dots are particularly significant for optical applications due to their high extinction coefficient.
These dyes are usually intensely colored and have large extinction coefficients.
The imaginary part is called the extinction coefficient.
Thus it remains to decrease the extinction coefficients.
Compute the extinction coefficient and calculate the concentrations of the unknown samples.
The extinction coefficient is derived from the amount of light lost in the air.
For instance, the chemical makeup and physical environment of the sample can alter its extinction coefficient.
In liquids, the extinction coefficient usually changes slowly with wavelength.
If the extinction coefficient is known, it can be used to determine the concentration of a protein in solution.