Cover Picture: Templated‐Assembly of CsPbBr3 Perovskite Nanocrystals into 2D Photonic Supercrystals with Amplified Spontaneous Emission (Angew. Chem. Int. Ed. 40/2020). Issue 40 (31st August 2020)

• Record Type: Journal Article
• Authors: Vila‐Liarte, David; Feil, Maximilian W.; Manzi, Aurora; Garcia‐Pomar, Juan Luis; Huang, He; Döblinger, Markus; Liz‐Marzán, Luis M; Feldmann, Jochen; Polavarapu, Lakshminarayana; Mihi, Agustín
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 40(2020)
• Page Start: 17305
• Page End: 17305
• Publication Date: 2020-08-31
• Subjects: 2D photonic crystals -- amplified spontaneous emission (ASE) -- PDMS template -- perovskite nanocrystals -- self-assembly; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202011445
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract : 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.