Laser contact through electrosprayed alumina inverse opals on silicon
New technique to use Al2O3 inverse opals as back reflectors in solar cells and contact them through laser beam. Based on electrospraying polystyrene onto a polarized silicon surface with passivation layer included. Is simple, easily scalable, and can be batch processed. Overcomes previous fabrication drawbacks: it has no area limitation and almost no damage to existing electrical properties.
laser contact electrospray inverse opals solar cell photonic crystal