Issue 37, 2022

Colloidal FAPbBr3 perovskite nanocrystals for light emission: what's going on?

Abstract

Semiconducting nanomaterials have been widely explored in diverse optoelectronic applications. Colloidal lead halide perovskite nanocrystals (NCs) have recently been an excellent addition to the field of nanomaterials, promising an enticing building block in the field of light emission. In addition to the notable optoelectronic properties of perovskites, the colloidal NCs exhibit unique size-dependent optical properties due to the quantum size effect, which makes them highly attractive for light-emitting diodes (LEDs). In the past few years, perovskite-based LEDs (PeLEDs) have demonstrated a meteoritic rise in their external quantum efficiency (EQE) values, reaching over 20% so far. Among various halide perovskite compositions, FAPbBr3 and its variants remain one of the most interesting and sought-after compounds for green light emission. This review focuses on recent progress in the design and synthesis protocols of colloidal FAPbBr3 NCs and the emerging concepts in tailoring their surface chemistry. The structural and physicochemical features of lead halide perovskites along with a comprehensive discussion on their defect-tolerant properties are briefly outlined. Later, the prevalent synthesis, ligand, and compositional engineering strategies to boost the stability and photoluminescence quantum yield (PLQY) of FAPbBr3 NCs are extensively discussed. Finally, the fundamental concepts and recent progress on FAPbBr3-based LEDs, followed by a discussion of the challenges and prospects that are on the table for this enticing class of perovskites, are reviewed.

Graphical abstract: Colloidal FAPbBr3 perovskite nanocrystals for light emission: what's going on?

Article information

Article type
Review Article
Submitted
04 4 2022
Accepted
06 5 2022
First published
09 6 2022
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. C, 2022,10, 13437-13461

Colloidal FAPbBr3 perovskite nanocrystals for light emission: what's going on?

H. Bhatia, B. Ghosh and E. Debroye, J. Mater. Chem. C, 2022, 10, 13437 DOI: 10.1039/D2TC01373H

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