An international group of scientists, along with some from ITMO University, has proposed a method that permits for significantly growing the efficiency of solar cells and lightweight-emitting diodes. The scientists managed to attain this result by augmenting the auxiliary layers of the devices accountable for electron transport instead of working with the primary active layer. The work has been featured in the journal Advanced Functional Materials.
The struggle to maintain the environment and severe movements in oil and fuel costs result in the fact that investors are more and more betting on renewable energy. That’s the reason scientists in different nations are actively working to make the process of producing electricity from renewable sources as powerful as possible. As an example, work is currently underway to extend the performance of solar cells, some of the popular green energy sources in the world.
Sometimes, scientists work with the active layer of the cells, which is liable for absorbing luminous energy—they’re made from silicon, gallium arsenide, perovskite and other supplies. However, the performance, cost and durability of a photovoltaic cell rely not only on the active layer but additionally the auxiliary ones. Growing their efficiency while concurrently decreasing production prices can boost the competitive benefits of a device.
The auxiliary layers of a photovoltaic cell can be of an electron-transport or hole-transport type. When sunlight hits the active layer, pairs of electrons and electron holes, in other words, a positive and a negative charge, are developed in it. After that, they need to be shifted to their respective electrodes.