While searching for better materials than before, Lehigh University developed a unique highly efficient material. Researchers believe this material with Lehigh University’s 190% efficient quantum could improve solar panels. It is expected that next generation solar cells are going to be highly efficient through this.
The new material developed by Lehigh University was used as an active prototype layer on solar cells. To their surprise, it exhibits an average PV absorption rate of 80% and a high rate of generating photoexcited carriers.
Moreover, they witnessed around 190% efficiency of external quantum efficiency (EQE) too. It shows the possibility of exceeding the efficiency limit of silicon materials and usage of quantum materials for PV new levels.
Professor of Physics, Chinedu Ekuma said, “This work represents a significant leap forward in our understanding and development of sustainable energy solutions, highlighting innovative approaches that could redefine solar energy efficiency and accessibility in the near future.”
Termed as Multiple Exciton Generation (MEG), these materials have still needs more research to achieve their aim to be broadly commercialized.
Properties of 190% Efficient Quantum Material
- The amount of photon energy lost by traditional solar cells is precisely captured by these materials.
- Moreover, the process does not exclude heat production and reflection.
- The newly discovered material is highly efficient because of its unique intermediate band states.
- These specific energy levels are placed within the electronic structure of the material, that makes them ideal for solar energy conversion.
- Energy levels inside the optimal subband have energy filled states.
- Material efficiently produces carrier chargers and absorbs sunlight of up to 0.78 and 1.26 electron volts.
- In the visible and infrared regions of the electromagnetic spectrum, also this material exhibits high absorption levels.
Development
After extensive computer modelling of the system, Prof. Ekuma developed this prototype as proof of his concept.
- This novel material is created by taking advantage of van der Waals gaps. These are atomic small gaps found in between the layers of two-dimensional materials.
- These gaps are effectively used to insert intercalate other materials within the layers. It enhances or tune the properties of material.
- Following this approach, zerovalent copper was inserted between the layers of a germanium selenide (GeSe) and tin sulfide (SnS), a two-dimensional material.
He explained, “Its rapid response and enhanced efficiency strongly indicate the potential of Cu-intercalated GeSe/SnS as a quantum material for use in advanced photovoltaic applications, offering an avenue for efficiency improvements in solar energy conversion.”
“It’s a promising candidate for the development of next-generation, high-efficient solar cells, which will play a crucial role in addressing global energy needs,” Prof. further added.
Prof. Ekuma points out that the technique used during the process is already highly advanced. Even though Lehigh University’s 190% efficient quantum could improve solar panels, further research and development is required. Then only it can be considered fit to integrate in presently used solar energy systems.
Source: CuxGeSe/SnS quantum material for photovoltaic applications
