Japan – a country excelling in technology is now unveiling an incredible technology solar cell which would be the world’s first cell to be waterproof and flexible. There’s a secret layer of a cell that is responsible for this invention that strengthens the cell bond. This innovation prepares it to be efficient, durable wearable electronics and boosts the solar industry.
Scientists from Japan made an innovative development in solar cell technology. They have created such an invention that is both waterproof and flexible. These solar cells will be the first ones to have these features. In the past, water was the reason for the damage of the solar cells.
Ultraflexible organic photovoltaics (OPVs) are very thin and can bend easily, this can be a great technology for wearable electronics. These waterproof cells are usually made with very thick and rigid layers. However, the solar cells are less flexible and less effective. Materials used to make these solar cells are sensitive to water which can damage them. Further, bending them can damage OPV and leave moisture.
This new solar cell uses a special layer called AgOx to protect it. This layer is placed on the cell and then it gets heated. Although this is just 3 micrometers thick, OPV retains its efficiency even after submersion in water for approximately 120 minutes and undergoes 300 water cycles.
They achieved this by growing a hole transporting layer in situ, anode and layer get active with strength. The silver electrode was composed of an anode layer which was directly collected onto the active layer and underwent a thermal temper process at 85 degrees Celsius for at least 24 hours. This process upgrades the adherence and water resistance of solar cells in comparison to conventional PV films.
This procedure includes different materials and methods for OPVs such as PM6, Y6, PC71BM and many other. This invention were invented using some process which includes spin coating, depositing the Ag layer and annealing. To increase the durability of OPVs its was then coated in Parylene.
Performance and Stability of OPVs were measured under the standard light conditions. Various tests were conducted to check the efficiency, working function, and other properties. Tests like stretching and compression are done to ensure that the device can withstand mechanical deformity. Water absorption tests are done to signify waterproofness. Impedance tests are implemented to check electrical resistance that changes after water submission.
In summary, the OPVs and AgOx offer durability, efficiency, and water resistance which make them perfect for wearable electronics and more. This can make a better future in the solar industry and can increase the efficiency of the solar cells.
Sources : https://www.nature.com/articles/s41467-024-44878-z
https://www.pv-magazine.com/2024/06/03/japanese-researchers-build-14-3-efficient-bendable-waterproof-organic-solar-cell/
Our Perspective
This invention is a great way to increase the strength of the solar cells as water is the most common cause of damaging the solar panels. This will increase the ability of the cells to protect the panels. These cells would be more durable, efficient and effective in the solar industry.
