APPENDIX A
The Absorption Coefficient
A few of the terms used in photovoltaics can have more than one definition. One such situation, and a very important one, is the definition of “absorption coefficient”; one definition uses the natural log, while another uses log to the base 10.
If illumination of wavelength λ and intensity I(λ) (photons per cm2 per second) impinges on a material of thickness d, some of the light is reflected R(λ) and some T(λ) emerges from the other side of the material at d. The fluxes I, R, and T are related by the simple expression
(A.1)
where A(λ) is the absorption taking place for this wavelength. When the Beer-Lambert ...
Get Solar Cell Device Physics, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
