我国科研团队在钙钛矿发光二极管领域取得新进展

Core Viewpoint - The research team from Nanjing University of Technology has developed a new method called "interlayer photon recycling," which has increased the external quantum efficiency of stacked perovskite light-emitting diodes (LEDs) to 45.5% [1][2] Group 1: Research and Development - The team, led by Huang Wei and professors Wang Jianpu and Wang Nana, has made significant advancements in perovskite LED technology, which converts electrical energy into light, contrasting with perovskite solar cells that convert light into electrical energy [1] - Stacked perovskite LEDs have historically struggled with external quantum efficiency, which had not exceeded 10%, presenting a bottleneck in the commercialization process [1] - The innovation of "interlayer photon recycling" allows photons generated by one perovskite layer to be reabsorbed and re-emitted by another layer, overcoming traditional light extraction efficiency limitations [1] Group 2: Commercialization Potential - The external quantum efficiency of the developed stacked perovskite LED has reached a level suitable for commercialization, despite still being in the laboratory stage [2] - The research team plans to scale up their laboratory results and steadily advance the commercialization of perovskite LEDs [2]