Nature Nanotechnology: Mingjian Yuan, Li Na Quan, and coauthors publish “Perovskite energy funnels for efficient light-emitting diodes” in Nature Nano Posted on 27 February 2017 | by admin Nature Nanotechnology: Mingjian Yuan, Li Na Quan, and coauthors publish ‘Perovskite energy funnels for efficient light-emitting diodes’ in Nature Nano