Absorption Enhancement of Ultrathin Crystalline Silicon Solar Cells with Dielectric Si3N4 Nanostructures * |
Xin-Yu Tan,Lei Sun,Guo-Rong Zhang,Can Deng,Yi-Teng Tu,Li Guan |
Fig. 4 (Color online) (a) Relationship between ${J}_{\rm sc}$ and thickness of back silver. (b) Comparison of absorption spectra for different configurations. Blue line means the absorption spectrum equipped with 67 nm flat ${\rm Si_{3}N_{4}}$. Red line means the absorption spectrum only with front system. Black line means the absorption spectrum with front system and back flat silver reflector. Green line means the absorption spectrum of bare silicon. |