15.7% Efficient 10-μm-Thick Crystalline Silicon Solar Cells Using Periodic Nanostructures

Only ten micrometer thick crystalline silicon solar cells deliver a short-circuit current of 34.5 mA cm[superscript −2] and power conversion efficiency of 15.7%. The record performance for a crystalline silicon solar cell of such thinness is enabled by an advanced light-trapping design incorporating a 2D inverted pyramid photonic crystal and a rear dielectric/reflector stack.United States. Dept. of Energy (SunShot Initiative Award DE-EE0005320)National Science Foundation (U.S.) (Nanoscale Science and Engineering Initiative Award CMMI-0728069)Martin Family Society of Fellows for Sustainabilit