Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications and Their Optical Properties

Abstract

Metal halide perovskites represent a flourishing area of research, driven by both their potential application in photo-voltaics and optoelectronics, and for the fundamental science underpinning their unique optoelectronic properties. The advent of colloidal methods for the synthesis of halide perovskite nanocrystals has brought to the attention inter-esting aspects of this new type of materials, above all their defect-tolerance. This review aims to provide an updated survey of this fast-moving field, with a main focus on their colloidal synthesis. We examine the chemistry and the ca-pability of different colloidal synthetic routes to control the shape, size and optical properties of the resulting nano-crystals. We also provide an up to date overview of their post-synthesis transformations, and summarize the various so-lution processes aimed at fabricating halide perovskite-based nanocomposites. We then review the fundamental optical properties of halide perovskite nanocrystals, by focusing on their linear optical properties, on the effects of quantum confinement and, then, on the current knowledge of their exciton binding energies. We also discuss the emergence of non-linear phenomena such as multiphoton absorption, biexcitons and carrier multiplication. At last, we provide an outlook in the field, with the most cogent open questions and possible future directions.

References in corpus (7)

• Design of Lead-Free Inorganic Halide Perovskites for Solar Cells via Cation-Transmutation
• Boosting tunable blue luminescence of halide perovskite nanoplatelets through post-synthetic surface trap repair
• Colloidal Synthesis of Strongly Fluorescent CsPbBr3 Nanowires with Width Tunable down to the Quantum Confinement Regime
• Low-temperature Benchtop-synthesis of All-inorganic Perovskite Nanowires
• Writing on Nanocrystals: Patterning Colloidal Inorganic Nanocrystal Films through Irradiation-Induced Chemical Transformations of Surface Ligands
• Synthesis, Crystal Structure, Magnetic and Electronic Properties of the Caesium-based Transition Metal Halide Cs3Fe2Br9
• Thinning CsPb2Br5 Perovskite Down to Monolayers: Cs-dependent Stability

Cited by in corpus (9)

• Identifying and reducing interfacial losses to enhance color-pure electroluminescence in blue-emitting perovskite nanoplatelet light-emitting diodes
• Temperature Driven Transformation of CsPbBr${}_3$ Nanoplatelets into Mosaic Nanotiles in Solution through Self-Assembly
• Nonradiative Energy Transfer between Thickness-Controlled Halide Perovskite Nanoplatelets
• Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride
• Composition, Size, and Surface Functionalization dependent Optical Properties of Lead Bromide Perovskite Nanocrystals
• Thickness-Dependence of Exciton-Exciton Annihilation in Halide Perovskite Nanoplatelets
• Energy Transfer in Stability-Optimized Perovskite Nanocrystals
• Two-dimensional metal halide perovskites and their heterostructures: from synthesis to applications
• Intrinsic ion migration dynamics in a one-dimensional organic metal halide hybrid