Application Of The Hybridized Devices Based On Fiber-shaped Dye-sensitized Solar Cells

Bulk rigid energy systems and electronics are not suitable for wearable electronics.In order to solve this obstacle,the researchers have developed a series of fiber flexible energy devices,and these flexible fiber devices have a broader application prospect than the bulky rigid energy devices.Flexible fiber energy devices can be deformed,twisted,bent and stretched and can be woven into textiles and fabrics that are integrated into different materials that fit the human body’s curved surface.Compared with the conventional rigid solar cells,the flexible fiber-shaped dye-sensitized solar cells(F-DSSCs)has its own unique advantages,such as light weight,low production cost and wide application scenarios.Based on this background,we used titanium wire to prepare F-DSSCs by anodization,which is used as an energy device for portable electronic devices,and integrated with other devices.F-DSSCs were prepared by anodization using Ti wire and applied to electrochromic smart windows(ECD)and silk up-conversion devices.The specific work content is as follows:(1)Preparation and performance study of F-DSSCs.We etched highly ordered TiO2 nanotube arrays on Ti wire by anodization.The sample was annealed and immersed in N719 solution for 24 hours to obtain a photoanode of F-DSSCs.The counter electrode was coated with platinum on the Ti wire by pyrolysis.The F-DSSCs prepared by this method have the advantages of simple preparation process,low cost,electrochemical stability and mechanical flexibility,and are easy to be prepared on a large scale.(2)Preparation and performance study of ECD based on F-DSSCs(PECSW).PECSW is made up of large areas of ECD and F-DSSCs.F-DSSCs and ECD-integrated devices offer unique advantages over traditional devices.Unlike traditional planar stacked self-powered ECD structures,F-DSSCs are designed as ECD frames that do not overlap with ECD and do not compete with ECD for visible light absorption;Due to the electrodes of F-DSSCs are all cylindrical fibers,the electrochemical properties of F-DSSCs have a very low angular dependence on sunlight,which facilitates the installation of PESCW on the exterior walls of buildings.(3)Preparation of up-conversion devices based on F-DSSCs.We designed a novel flexible 980 LD-PVC device consisting of F-DSSCs and PC silk film with UCNPs function,in which the silk film is used as a post-conversion reflection enhancer.F-DSSCs can overcome these structural disadvantages of planar photovoltaic cells.It maintains good electrochemical performance after integrating F-DSSCs into fabrics.At the same time,due to the application of silk materials in the development of PC intensifiers,flexible 980 LD-PVC devices have higher power output and better biocompatibility.