Design of highly stable and efficient molybdenum telluride PV cells with arsenic telluride BSF

Abstract

For high efficiency and better thermal stability, Molybdenum Telluride (MoTe2) is remarkable as potential photovoltaic (PV) cell. AMPS (Analysis of Microelectronic and Photonic Structures) simulator is used to investigate the cell performance parameters to design the highly efficient ultra-thin MoTe2 PV cell. In this research work, it has been explored that the cell conversion efficiency of MoTe2 PV cell is improved with the insertion of Arsenic Telluride (As2Te3) as back surface field (BSF) above the back contact metal. The highest conversion efficiency of 25.08% was found for As2Te3 BSF with only 0.9 μm of absorber layer whereas it was 17.06% for no BSF with 1 μm thickness of absorber layer. The thermal stability of MoTe2 PV cell with As2Te3 BSF showed better stability also.