POLARIZED ELECTROABSORPTION SPECTRA AND LIGHT SOAKING OF SOLAR-CELLS BASED ON HYDROGENATED AMORPHOUS-SILICON

We present grazing-incidence measurements of polarized electroabsorpti on spectra in p-i-n solar cells based on hydrogenated amorphous silico n (a-Si:H). We find a significantly stronger polarization dependence i n the present measurements compared with earlier work based on electro absorption detected using coplanar electrodes on a-Si:H thin films. We do not find any significant dependence of the polarized electroabsorp tion upon light soaking, although this effect was found in previous wo rk with coplanar electrodes. (C) 1998 American Institute of Physics.