Ocean mixing timescale through time and implications for the origin of iron formations
Not provided.
Geochemistry & Geophysics↗
Engineering topics
Jansen, M.
Publications and source records attributed to Jansen, M..
Multiwavelength analyzer for the determination of diffusion lengths
The minority carrier diffusion length Ln in the base or substrate region is an important parameter which governs a solar cell's performance. The present investigation is concerned with the development of a multiwavelength analyzer (MWA) technique for the nondestructive spatial testing of polycrystalline solar cells. The MWA method is based on the utilization of the short-circuit current generated by two or more light-emitting diodes (LEDs) operating at different wavelengths and modulated 180 deg out-of-phase. For a determination of Ln by the MWA technique, it is necessary to know the value of the absorption coefficient.
Stafsudd, O. M.↗