In this paper, wide-angle infrared perfect absorption has been demonstrated by using a double-layer graphene strip grating coupled with silicon dioxide grating. Numerical simulation of the finite-difference time-domain method indicates that can be achieved due to effective impedance matching, and all incident electromagnetic energy is confined in Al 2 O 3 layer between silver substrate Dual-ban...

Sb2(S1-x,Sex)3 compounds with tunable band gap values received considerable attention as solar absorber candidates for efficient thin film cells. However, the efficiency of Sb2(S,Se)3 cells is limited to less than 10.5 %. An investigation into performance contact/Hole Transport Layer (HTL)/ Sb2(S,Se)3/Electron (ETL)/contact has been carried out. The transformation photogenerated carriers in HTL...