Résumé
This paper reports on the optimization of 1eV dilute nitride solar cells growth conditions. InGaAsN cells were grown by MBE under different conditions (V/III ratio, substrate temperature, surfactant) and were processed without post-growth annealing. Characterization results suggest that the V/III ratio should be kept above 10 and that using Bi as a surfactant does not improve the cell performances. Our best InGaAsN cells exhibit Jsc and Voc values of 7.9 mA/cm 2 and 0.375 V respectively, under AM0> 870 nm and without ARC.