Abstract
Abstract Modification of electrodeposited n-CdTe thin films by PbS showed considerably improvement of the performance and stability of n-CdTe photoelectrochemical cells. The enhanced parameters of PEC solar cells after modification are V oc = 0.515 V , I sc = 13 mA/cm 2 , FF = 0.385 and η = 5.2% under 50 mW/cm2 illumination, compared to V oc = 0.44 V , I sc = 6 mA/cm 2 , FF = 0.31 and η = 1.6% observed before modification. The enhanced parameters are attibuted to the greater band bending induced by excess surface charge, as well as the enhanced solution kinetics due to a good electrocatalysis of PbS for the polysulfide redox system.
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