200 /spl mu/m thick encapsulated amorphous silicon solar cells

Abstract

A 200 /spl mu/m thick fully glass-encapsulated a-Si:H solar cell is demonstrated. The cell structure is 75 /spl mu/m glass foil superstrate/a-Si,N:H diffusion barrier/specular ZnO:Al/a-Si:H pin solar cell/Al. The solar cell is encapsulated with 50 /spl mu/m ethylene vinyl acetate (EVA) and another 75 /spl mu/m glass foil. The current-voltage characteristics of a 0.24 cm/sup 2/ cell measured under AM1.5 (100 mW/cm/sup 2/) light give V/sub OC/=0.83 V, J/sub SC/=11.1 mA/cm/sup 2/, and FF=0.61, for an initial efficiency of 5.6%.