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Cover Picture: Templated‐Assembly of CsPbBr 3 Perovskite Nanocrystals into 2D Photonic Supercrystals with Amplified Spontaneous Emission (Angew. Chem. Int. Ed. 40/2020)
Author(s) -
VilaLiarte David,
Feil Maximilian W.,
Manzi Aurora,
GarciaPomar Juan Luis,
Huang He,
Döblinger Markus,
LizMarzán Luis M,
Feldmann Jochen,
Polavarapu Lakshminarayana,
Mihi Agustín
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202011445
Subject(s) - nanocrystal , materials science , photonics , purcell effect , photonic crystal , lithography , optoelectronics , nanotechnology , perovskite (structure) , excitation , self assembly , spontaneous emission , optics , crystallography , laser , chemistry , physics , quantum mechanics
CsPbBr 3 perovskite nanocrystals are readily shaped into large‐area 2D photonic crystals by means of nanoimprinting lithography, as shown by L. Polavarapu, A. Mihi et al. in their Research Article on page 17750. The periodic patterning provides efficient light coupling to the nanocrystal layer, increasing the electric field intensity within the perovskite film and resulting in amplified spontaneous emission (ASE) under lower optical excitation fluences in the near‐IR. The cover image illustrates the nanocrystal assembly process and the resulting photonic architecture after the mold has been removed.