Optical design considerations of rear-side dielectric for higher efficiency of PERC solar cells.

Higher reflectance of the rear-side dielectric stack, at the wavelength of the laser source used for ablation, reduces laser-induced damage and improves the open-circuit voltage of PERC silicon solar cells. The understanding of this correlation increases the working window of cost-effective nanosecond laser ablation of the rear-side dielectric for higher-efficiency industrial PERC-like solar cells.

Interaction of ammonia borane with Li2NH and Li3N.

Interaction of NH(3)BH(3) and Li(2)NH (or Li(3)N) in THF leads to the formation of NH(3) and LiNH(2)BH(3), which further react with each other and produce ca. 10 wt.% hydrogen at 45 degrees C.