Efficient Luminescence from Perovskite Quantum Dot Solids

Nanocrystals of CsPbX3 perovskites are promising materials for light-emitting optoelectronics because of their colloidal stability, optically tunable bandgap, bright photoluminescence, and excellent photoluminescence quantum yield. Despite their promise, nanocrystal-only films of CsPbX3 perovskites have not yet been fabricated; instead, highly insulating polymers have been relied upon to compensate for nanocrystals' unstable surfaces. We develop solution chemistry that enables single-step casting of perovskite nanocrystal films and overcomes problems in both perovskite quantum dot purification and film fabrication. Centrifugally cast films retain bright photoluminescence and achieve dense and homogeneous…

• FD
  Fundação de Amparo à Pesquisa do Estado de São Paulo

  Award: 2014/18327-9
• KA
  King Abdullah University of Science and Technology

  Award: KUS-11-009-21
• NS
  Natural Sciences and Engineering Research Council of Canada