Development of Stable High Efficient Perovskite Solar Cells Nontoxic Processing Technologies

The main objective of this project is to research and develop perovskite solar cell enhanced chemical energy storage system. We will design n-type electron transport layers and environmental-friendly water-based process for high efficiency perovskite solar cells (PSS). The keys rely on the layers’ conductivity and carrier transport characteristics and the band gap engineering. It will be essential to design and match the energy levels and interfacial characteristics between the perovskite sensitizers and the contact metal layers. In addition to the cell assembly, a comprehensive investigation of the solar cell materials and devices need to be carried out.  First year: To establish a standard platform for the perovskite solar cells by all layer structures, cell assembly process, and cell performance tests. The target is a stable and higher than 10% electro-optical efficiency. We will start by synthesizing high mobility ZnO-based films and control by oxidation and doping. A series of band gap and interfacial engineering will be introduced to improve the interfacial characteristics. To develop patent processes that can be used to reduce cell internal resistance (RS) and to increase the cells fill factor (FF), thus improving the solar cell efficiency.  Second year: To develop non-toxic water-based PbI2 materials and processes for perovskite solar cells. Most of the literatures used high polar and toxic solvents, such as DMF and DMSO, which are not suitable for industrial applications. Therefore, we will develop water-based processes for large-area electrolysis and spraying technologies. It is essential for safe and low-cost perovskite solar cell enhanced chemical energy storage system.  Third year: To develop solar cell packaging materials and methods, including low temperature processes for flexible substrates. We will optimize the device performance by integrating with nano-structured semiconductor photo-catalysts, high mobility transparent conducting oxides and novel quantum dot hole materials from the group project. The instrumental study includes EIS analysis for interfacial capacitance and resistance. Laser transient experiments will also be carried out to understand the fundamental characteristics, so that we can get the best possible performance.

Project ID:PB10507-1871
External Project ID:MOST105-2221-E182-059-MY3