IMPROVEMENT OF EFFICIENCY OF ITO SE THIN-FILM SOLAR-CELLS USING TELLURIUM STIMULATOR/

Indium Tin Oxide ITO/Se thin film solar cells have been fabricated by Vacuum deposition. Prior to deposition of selenium film, ultrathin tel lurium film has been deposited on ITO thin film. Tellurium film acts a s a stimulator for bringing improvement in crystallite size, adhesion to ITO and electrical behaviour of selenium thin films. The maximum ef ficiency of the ITO/Se thin film solar cells without tellurium stimula tor and with tellurium stimulator under illumination AM1 (100 mW cm(-2 )) are found to be 1.68% and 2.27% while under fluorescent tubelight ( 0.15 mW cm(-2)) are found to be 5.85% and 7.05% respectively. The ITO/ Se thin film solar cells exhibits high spectral response at short wave length The barrier height of the ITO/Se thin film solar cells was dete rmined.