A novel method for the measurement of diffusion lengths in solar cells
The minority carrier diffusion length in the base region of a solar cell is an important factor affecting the conversion efficiency and spectral response of the cell. Conventional methods for the measurement of minority carrier diffusion lengths in semiconductor materials are generally unsuitable for measurements on completed solar cells. This paper describes a simple and direct technique for the measurement of minority carrier diffusion length in solar cells, It has been applied to both single crystalline and polycrystalline silicon solar cells, and the results compared to standard surface photovoltage measurements.
XIII. Photovoltaic and Photoconductive Theory Applied to InSb
Equations are formulated for the distribution of photo-electrons and photo-holes in an intrinsic material. From the results for the photovoltaic effect it is shown that a value for the ambipolar di...
The Absorption Spectra of Single Crystals of Lead Sulphide, Selenide and Telluride
The absorption spectra of single crystals of PbS, PbSe and PbTe have been examined in the temperature range from 20°K to 600°K The spectra are characterized by a sharp absorption edge which comcides with the long wavelength limit of photoconductivity in each material. At longer wavelengths the absorption coefficient increases slowly with increasing wavelength, as in germanium and silicon