Germany develops ultra-thin transparent layer solar cells with cell efficiency reaching 23.99% -Lithium - Ion Battery Equipment
Researchers at the Jülich Institute for Energy and Climate Research (IEK-5) in Germany claim to have created a solar cell prototype based on transparent passivated contacts (TPC) with a power conversion efficiency of 23.99%.
This result was confirmed by the CalTeC laboratory of the Institute for Solar Energy Research in Hamelin (ISFH). "This means that the Jülich TPC solar cells still rank slightly lower than the best crystalline silicon cells made in the laboratory to date, but simulations carried out at the same time show that with TPC technology, efficiencies exceeding 26% are possible," the scientists said.(Lithium - Ion Battery Equipment)
Scientists at Germany's Institute for Solar Energy Research in Hamelin (ISFH) are studying the feasibility of using wind, solar and heat pumps to power and heat entire urban areas.
The German group is specifically looking to evaluate how thermal and electrical storage systems and heat pumps can be used simultaneously in various scenarios to increase the share of renewable energy in residential areas.
Device passivation is achieved through an ultra-thin transparent layer that is said to effectively prevent recombination events. The German group explains: "In this process, the already present negative and positive charge carriers combine and cancel each other out before being used for the flow of solar electricity. This effect can be achieved by special materials with special properties - Passivation to offset."
The manufacturing process is based on wet chemical processes, chemical vapor deposition (CVD) and sputtering technologies. During the construction of the prototype, a double layer of tiny pyramid-shaped nanocrystals of silicon carbide and a transparent layer of indium tin oxide were deposited on top of a thin layer of silicon dioxide.
The academics also say that in addition to providing the required passivation, the transparent layer also reduces the incidence of light and is highly conductive. Researcher Ding Kaining said: "So far, there is no other method that can combine these three properties - passivation, transparency, conductivity - in the same way as our new design. The passivation technology may be easily scaled up for commercialization production. We expect significant interest in our technology from solar cell manufacturers."