刷新世界纪录！我国团队成功构建→

Core Viewpoint - The research team led by Huang Wei from Nanjing University of Technology has achieved a breakthrough in perovskite tandem LED devices, with an external quantum efficiency exceeding 45%, setting a new world record in this field [1]. Group 1: Research Achievements - The team successfully constructed all-perovskite tandem LED devices and proposed an innovative strategy utilizing interlayer photon recycling effects to enhance light extraction efficiency [1]. - The results were published in the international academic journal "Nature" on November 11 [1]. Group 2: Technical Innovations - The research optimized the connection layer structure to achieve efficient charge injection and balance within the tandem devices [1]. - The unique interlayer photon recycling effect allows photons generated by one emitting unit to be reabsorbed and re-emitted by another perovskite layer, surpassing traditional light extraction efficiency limitations, achieving a "1+1>2" effect [1]. Group 3: Industry Implications - The commercial organic LED display screens commonly use tandem device structures, which enhance brightness and lifespan by connecting multiple emitting units [1].