{"id":4488,"date":"2020-03-26T10:59:45","date_gmt":"2020-03-26T10:59:45","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=4488"},"modified":"2020-03-26T11:01:40","modified_gmt":"2020-03-26T11:01:40","slug":"using-carbon-dots-to-increase-the-efficiency-of-solar-cells-and-leds","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/using-carbon-dots-to-increase-the-efficiency-of-solar-cells-and-leds\/4488\/","title":{"rendered":"Using carbon dots to increase the efficiency of solar cells and LEDs"},"content":{"rendered":"
Scientists across the globe are actively working to make the process of generating energy from renewable sources<\/a> as efficient as possible. Researchers typically work with the active layer of the cells, which is responsible for absorbing luminous energy. These active layers are commonly made from silicon, gallium arsenide and perovskite<\/a>. The efficiency, cost and durability of a solar cell depend not only on the active layer but also on the auxiliary layers.<\/p>\n The auxiliary layers of a solar cell can belong to the electron-transport or hole-transport type. When sunlight reaches the active layer, pairs of electrons and electron holes are formed. Then, they need to be taken to their corresponding electrodes, the electron-transport layer is responsible for extracting and transferring the negative charge from the active layer, while the hole-transport layer performs the same operations with the positive one.<\/p>\n An international group of scientists have proposed a new method of creating auxiliary layers for solar cells and LEDs<\/a>\u00a0using carbon dots, an environmentally friendly material that can easily be obtained both in laboratory and industrial conditions.<\/p>\nHow can this process be improved?<\/h3>\n