Theoretical relations are derived for the amplitude of the photoacoustic signal of a gas‐coupled cell for thick semiconductor samples including the influence of multiple reflections of light within the sample. It is shown that in the range of low absorption coefficients characteristic of impurity absorption spectra the sensitivity of the cell can be enhanced by using a highly reflecting metal as backing material. Numerical estimates for CuInSe 2 are given to illustrate this effect.
No takes yet. Share an insight, caveat, or question.
H. Neumann (1993) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: