采用PtCu合金对电极的双面液结光伏器件

Abstract This study investigates the synthesis of PtCu nanoparticles (NPs) with varying Pt and Cu precursor volume ratios using atmospheric dry plasma reduction (DPR) technology. Notably, DPR operates under ambient pressure and temperature conditions without the need for toxic chemicals, making it an environmentally friendly approach. The synthesized PtCu NPs were immobilized on fluorine-doped tin oxide (FTO) substrates and utilized, for the first time, as counter electrodes (CEs) in highly efficient bifacial dye-sensitized solar cells (BFDSCs). The morphology, surface chemical state, and electronic structure of PtCu NPs were analyzed using Scanning Electron Microscopy (SEM) and X-ray Photoelectron Spectroscopy (XPS). Their electrochemical performance was evaluated using Tafel analysis, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Additionally, the power conversion efficiency (PCE) of BFDSCs was assessed from both the front and back sides. The highest recorded PCE for PtCu CE-based BFDSCs was 7.28% (front-side) and 5.25% (back-side), exceeding that of conventional Pt CE-based BFDSCs (6.66% and 4.75%, respectively). Furthermore, we evaluated and compared the price-performance ratio to identify the optimal composition for replacing traditional Pt-based CEs. These results emphasize the potential of PtCu alloy CEs as a hopeful alternative to Pt CEs, offering both enhanced PCE and cost-effectiveness for next-generation BFDSCs.