Fig. 1
From: Effective Light Absorption Using the Double-sided Pyramid Gratings for Thin-Film Silicon Solar Cell
Different structures of crystalline silicon (CS) thin-film solar cell with or without pyramid gratings. a The bare crystal silicon (BCS). b The front pyramid grating (FPG). c The rear pyramid grating (RPG). d The double-sided pyramid grating (DSPG). (AF, ASi, and AR represent the light absorption of the front surface gratings, the CS part, and the rear surface gratings, respectively. H is the thickness of the CS layer; P1, D1, H1 and P2, D2, H2 represent the period, bottom diameter, and height of silicon pyramid of the front or rear surface, respectively)