Reply to Comment on 'New ways of developing glass conducting glass CdS/CdTe metal thin-film solar cells based on a new model', by Dharmadasa et al 2002 Semicond. Sci. Technol 17 1238-48

A high short-circuit current density of 69.1 mA cm(-2) for silicon solar cells was first published over a decade ago. A few photovoltaic research groups dismissed that report indicating errors must have been made in measurement. Our work on both CdTe and CIGS based tandem solar cells has also shown similar high current densities and provides one possible explanation for the observations on silicon solar cells. This paper identifies the urgent need for theoretical calculations for multilayer graded bandgap tandem solar cells.