Tokyo Chemical Industry (TCI), a global supplier of laboratory chemicals and specialty materials, has recently started to offer a new material for perovskite solar panel makers, Thiomorpholine hydroiodide (SMORI, 1) a passivation reagent suitable for p-i-n type perovskite solar cells.
TCI explains that n-i-p perovskite solar panels suffer from structural defects on the layer surface, and these can be fixed with a process called passivation. This process not only repairs the defects, but it also improves the solar panels' resistance to external degradation factors such as heat and moisture. With p-i-n type perovskites, normal passivation materials cause electron blocking. TCI's new SMORI material is useful for p-i-n panel passivation, thus enhancing the performance of stability of the panels.
SMORI, 1 (Thiomorpholine hydroiodide) is an ammonium salt that is suitable for p-i-n passivation. TCI explains that after deposition and annealing of the SMORI material onto the perovskite layer, a quasi-2D perovskite layer is formed, which is advantageous to the high durability of the perovskite layer. Compared to an untreated perovskite layer, the layer treated with the SMORI material has a conduction band energy level closer to the LUMO of the electron transport layer, which allows for smooth electron transfer.
TCI reports that the SMORI passivation can increase the efficiency of solar panels quite dramatically. In one test, the company used a panel with 24.55% efficiency. In an accelerated degradation test at 85-degrees Celsius, the panels efficiently dropped by over 30% after only 200 hours. A similar panel with the SMORI passivation, maintained 90% of its efficiency after more than 800 hours.
TCI offers a wide range of materials for the perovskite industry, including perovskite precursors, high-performance hole collecting materials, Phenylethylamine Hydroiodides materials, SAM forming agents, n-type SAM PANDI forming agents, hole transporting materials, and more. We published an interview with TCI back in 2022 to discuss their perovskite materials and views on the industry and market.
This was a sponsored post by TCI