Год выпуска: 2009 Автор: Jeremy Nelson Издательство: LAP Lambert Academic Publishing Страниц: 240 ISBN: 9783838313320
Описание
Appropriately substituted tris(bipyridine)cobalt(II) complexes (Co-bpy) have been found to function adequately as electron transfer mediators in dye-sensitized solar cells (DSSCs). However, the performance of Co-bpy in DSSCs has so far not equaled that of more traditional mediators based on the iodide/triiodide redox couple. This book primarily focuses on research conducted to investigate the reason for the poorer performance of Co-bpy mediators, although significant attention is also given to efforts to develop a solid-state Co-bpy DSSC. A series of two-electrode experiments was devised and an apparatus built to perform three-electrode experiments, a task made more complex by the thin layer, "sandwich cell" geometry of the DSSC. The results of this work suggested that mass transfer of the Co-bpy is often rate-limiting and significantly slower than that of iodide-based mediators. A mostly theoretical treatment of mass transfer predicted that diffusion within the mesoporous...
