Polarized emission from CsPbX₃ perovskite quantum dots

Abstract

The polarization property of CsPbX3 perovskites have been observed and studied systematically in this paper.

Fully‐Inorganic Trihalide Perovskite Nanocrystals: A New Research Frontier of Optoelectronic Materials

“…[22,121] CsPbBr 3 and CsPbI 3 NCs exhibited stronger PL with nearly no non-radiative decay, whereas CsPbX 3 NCs with a high content of Cl − undergo significant non-radiative decay. [126]), larger than that of the National Television System Committee (NTSC) standard (solid white triangle in Figure 4a), [22] which was identified as 100% by the NTSC in 1951. [33] As depicted by the Commision Internationale de l'Eclairage (CIE) chromaticity diagram (Figure 4d), CsPbX 3 NCs allow a wide gamut of pure colors.…”

“…[133] Most recently, the development of QD-based LEDs as liquid crystal display backlight has led to a rebirth of interest in these perovskite compounds. [126] The high polarization properties of CsPbX 3 QDs possess high potential for low power displays with wide color gamut. Additionally, relatively strong polarization can be achieved in hexane directly without further alignment processes.…”

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

“…Experimental observations indicate that the perovskite nanoparticles can easily form selfassembled superstructures due to their ionic nature 45,33 and the reported morphology of the Cs-LHQDs in literature is mostly cube-like (or) square plate-like structures. This is due to the lower surface energy of f100g facets of Cs-LHQDs in solution.…”

“…The nonradiative energy transfer between the quantum dots (QDs), 32 low value of full-width half maximum (FWHM) over II-VI QDs (<30 nm), and good polarized emission properties 33 are some of the notable advantages of these QDs. Ultrafast analysis of these materials reveals that the properties of the Cs-LHQDs resemble the properties of CdSe and PbSe nanoparticles.…”

High‐Purity Hybrid Organolead Halide Perovskite Nanoparticles Obtained by Pulsed‐Laser Irradiation in Liquid

“…[27,28] For example, the development of complex solar-cell architectures will require porous perovskite films infiltrated with at ransparent charge transport-Nanoparticles of hybrid organic-inorganic perovskites have attracted ag reat deal of attention due to their variety of optoelectronic properties, their low cost, and their easier integration into devices with complex geometry,c ompared with microcrystalline, thin-film, or bulk metal halides. [29] Compared with the preparation of other types of nanoparticles, such as traditional inorganic semiconductor quantum dots, metal NPs, or even inorganic perovskites, [30][31][32][33][34] the synthesis of HyP-NPs is not as well developed. Starting from ab ulk CH 3 NH 3 PbBr 3 crystal,o ur PLIL procedure does not involve the use of high-boiling-point polar solvents or templating agents, and runs at room temperature.…”