Cesium lead halide ( CsPbX ₃, X = Cl , Br, I) perovskite quantum dots-synthesis, properties, and applications: a review of their present status

Abstract

, "Cesium lead halide (CsPbX 3 , X ¼ Cl, Br, I) perovskite quantum dots-synthesis, properties, and applications: a review of their present status," J. Photon. Energy 6(4), 042001 (2016), doi: 10.1117/1.JPE.6.042001. Abstract. Metal halide-based perovskite quantum dots (QDs) have emerged as promising materials for optoelectronics and future energy applications. Among them, cesium lead halide-based perovskite quantum dots (Cs-LHQDs) have been found to be potential luminescent candidates and alternatives for the II-VI and I − III − VI 2 groups semiconductor nanoparticles. These perovskites provide an excellent quantum yield (90%) larger than any other semiconductor QDs. At present, synthesis of Cs-LHQDs has been successfully achieved through a traditional colloidal-based hot-injection method and a room temperature precipitation method. Some of the interesting results in their structural, optical, and morphological properties are being analyzed to understand their energy-transfer mechanism in the colloidal state. Morphology of nanoplates, nanowires, nanocube, and nanosheets in these materials confirms their physical parametersdependent self-assembly nature in a colloidal medium. Their potential use for light emitting diodes, photodetectors, and lasers is also highly motivated. This review provides a collective view of recent developments made in the synthesis of Cs-LHQDs and their properties. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Complete self-recovery of photoluminescence of photodegraded cesium lead bromide quantum dots

“…2 These excellent properties have attracted much attention, especially in applications for LEDs, 3,4 wide-color gamut displays, 1 photovoltaic devices, 5 lasers, 6,7 photodetectors, 8 photocatalysts, 9 and bioimaging; 10 therefore, CsPbX 3 QDs have been examined by many research groups. [11][12][13][14][15][16][17] Furthermore, other cesium lead halides, e.g., CsPb 2 Br 5 , 18 are also attractive in optoelectronic devices. In CsPbX 3 , green-emitting bromide QDs show a higher PL quantum yield (PLQY) and stability than the chloride and iodide QDs.…”

Recent Progress and Development in Inorganic Halide Perovskite Quantum Dots for Photoelectrochemical Applications

“…IHPQDs possess a series of unique optical properties, including ultrahigh photoluminescent quantum yield, composition‐dependent luminescence tunable in the whole visible region, narrow line‐width (12–40 nm), and wide color gamut (≈140%), which have been well reviewed in several excellent review articles, and will not be repeated here. Below we will emphasize some particular characteristics of IHPQDs.…”

High Photoluminescence Quantum Yields in Organic Semiconductor–Perovskite Composite Thin Films

“…With increasing photoexcitation the traps are progressively filled, increasing the luminescence. Radiative recombination and hence PLQY can be substantially enhanced through spatial confinement of charges, which can be obtained in passivated perovskite nanostructures, such as colloidal nanocrystals . Another way of obtaining nanostructured perovskites is the use of a scaffold, which can be a metal oxide, a polymer, or even a small molecular weight compound (small molecules) that can be blended and solution‐processed with the perovskite precursors .…”

“…Radiative recombination and hence PLQY can be substantially enhanced through spatialc onfinement of charges, which can be obtained in passivated perovskite nanostructures, such as colloidal nanocrystals. [12][13][14] Another way of obtaining nanostructured perovskites is the use of as caffold, which can be am etal oxide, [15,16] ap olymer, [17][18][19][20][21][22] or even a small molecular weightc ompound (smallm olecules) that can be blended and solution-processed with the perovskite precursors. [23,24] In this way,t he crystal/graing rowth of the perovskite is limited by of the dielectric scaffold, and highly luminescent perovskite composite films can be readily prepared.…”