Efficient light-emitting diodes based on oriented perovskite nanoparticles
Structural characterizations of the perovskite nanoplatelet films. (A) A cross-sectional scanning transmission electron microscopy–high-angle annular dark-field (STEM-HAADF) image showing the continuous and pinhole-free perovskite layer. TPBi, 2,2′,2″-(1,3,5-benzinetriyl)tris(1-phenyl-1H-benzimidazole); PVK, poly(9-vinylcarbazole). (B) ...
