Inorganic Halide Perovskite Quantum Dots: A Versatile Nanomaterial Platform for Electronic Applications

Abstract

Metal halide perovskites have generated significant attention in recent years because of their extraordinary physical properties and photovoltaic performance. Among these, inorganic perovskite quantum dots (QDs) stand out for their prominent merits, such as quantum confinement effects, high photoluminescence quantum yield, and defect-tolerant structures. Additionally, ligand engineering and an all-inorganic composition lead to a robust platform for ambient-stable QD devices. This review presents the state-of-the-art research progress on inorganic perovskite QDs, emphasizing their electronic applications. In detail, the physical properties of inorganic perovskite QDs will be introduced first, followed by a discussion of synthesis methods and growth control. Afterwards, the emerging applications of inorganic perovskite QDs in electronics, including transistors and memories, will be presented. Finally, this review will provide an outlook on potential strategies for advancing inorganic perovskite QD technologies.

S-doped C3N5 derived from thiadiazole for efficient photocatalytic hydrogen evolution

“…6,19,20 In addition, doping heteroatoms can behave as trapping sites for photoexcited electrons/holes to suppress their recombination. [21][22][23] As early as 2010, Cheng and coworkers rst synthesised S-doped carbon nitride (SCN) by placing bare g-CN in gaseous H 2 S at high temperatures. 24 The resultant SCN exhibited an increased valence band (VB) width and an elevated conduction band (CB) minimum owing to a homogeneous substitution of lattice N by the doped S content, which showed boosted activities for hydrogen evolution and photooxidation of phenol.…”

Tunable and Efficient Photoluminescence of Lanthanide-Doped Cs2NaScCl6 Double Perovskite Single Crystals toward Multifunctional Light-Emitting Diode Applications

“…Lead halide perovskite materials have unique photoelectric characteristics, such as large absorption cross section, long carrier diffusion length, high carrier mobility, tunable optical band gap, low cost, and simple manufacturing process, which have attracted great attention for high-performance optoelectronic devices. − However, the low chemical stability and lead toxicity seriously hinder their commercialization. Metal halide double perovskite (A 2 B + B 3+ X 6 , A and B are metal cations and X is halogen ions) materials, compared with lead halide perovskite materials, have more stable photoelectric properties and environmental friendliness, and have greater potential in the commercialization of photoelectric devices. − However, the reported pristine metal halide double perovskite materials exhibit poor luminescence properties due to their inherently indirect band gap or direct band gap with an optically forbidden transition. , On the other hand, the emission spectrum originating from self-trapped excitons (STEs) of the double perovskite single crystals (DPSCs) can be hardly modulated.…”

Phase Regulation and Defect Passivation Enabled by Phosphoryl Chloride Molecules for Efficient Quasi-2D Perovskite Light-Emitting Diodes

“…Recently, metal halide perovskites are emerging as superb semiconductors for light-emitting diodes (LEDs) due to their excellent optoelectronic characteristics such as high color purity, adjustable bandgap and high defect tolerance [ 1 – 4 ]. External quantum efficiencies (EQEs) of perovskite LEDs (Pero-LEDs) have been greatly improved in the past few years.…”