One-Pot Synthesis of Flower like FeS2 as Counter Electrode for Quantum Dot Sensitized Solar Cells

Abstract

Abstract Counter electrodes plays significant role in electron transport in photovoltaics and an ideal counter electrode should have high electrocatalytic activity, cost effective, high performance stability. With this concern, an easy fabrication process is also necessary for quantum dot-sensitized solar cells (QDSSCs). Iron disulfide (FeS2) is an earth-abundant, non toxic and low-cost material and We report a facile one-pot hydrothermal method for the growth of flower like FeS2, which is used as a high efficient counter electrode for QDSSCs. FESEM images show the flower like morphology and XRD pattern confirms the formation of iron pyrite phase. UV-visible absorption spectrum showed absorption in the visible region. QDSSC with FeS2 nanoflower as counter electrode exhibited a power conversion efficiency of 1.174 % with a Voc of 1.368