Environmental Friendly, Low Cost Quasi Solid State Dye Sensitized Solar Cell: Polymer Electrolyte Introduction

摘要: The most efficient DSSCs reported till date contains liquid electrolytes with I−/I3− redox couple. However, the disadvantages of lead to reduce impact DSSCs. In present work, electrolyte was replaced by quasi-solid gel polymer (GPEs) using polyethylene glycol (Mwt = 20,000), which are incorporated in small fractions (0, 1, 5, 10, 15 and 20 % w/v) into iodine/iodide matrix. roughness homogeneity GPEs on surface TiO2 electrodes monitored atomic force microscope indicates physical cross linking chains a network. conductivity (σ) thermal stability (TGA) compared were studied details. photovoltaic characteristics [Voc, Isc, fill factor efficiency (η)] based recorded, results revealed assembled reports higher short circuit density (JSC) lower or similar open voltage (VOC) than cells electrolyte. overall light-to-electrical-energy conversion efficiencies (η) showed relatively over period time those electrolyte, indicating that nature may impart flexibility so some large-scale productions such as roll-to-roll process can be realized.