Transport in hydrogenated amorphous silicon <i>p</i>-<i>i</i>-<i>n</i> solar cells

Abstract

Measurements of the voltage dependence of the photocurrent in hydrogenated amorphous silicon p-i-n solar cells are presented along with a simple physical model of the transport. For the conditions of weakly absorbed light, the photocurrent-voltage curve can be completely specified by the light intensity and electron and hole drift lengths. Furthermore, the carrier with the longer drift length determines the solar cell current-voltage curve.