Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr<sub>3</sub> Nanosheets with Lateral Size Control up to the Micrometer Range

Shamsi, Javad; Dang, Zhiya; Bianchini, Paolo; Canale, Claudio; Stasio, Francesco Di; Brescia, Rosaria; Prato, Mirko; Manna, Liberato

doi:10.1021/jacs.6b03166

Cited by 467 publications

(550 citation statements)

References 28 publications

Supporting

Mentioning

525

Contrasting

Unclassified

Order By: Relevance

“…In addition, they have also shown that the lateral size of the quantum-confined CsPbBr 3 nanoplatelets (thickness~3 nm) can be controlled up to the micrometer range by varying the ratio of shorter ligands (octanoic acid and octylamine) to longer ligands (oleic acid and oleylamine), while maintaining their thickness and, to a large degree, the optical properties. 93 Single-particle emission of perovskite NCs Most of the studies discussed above have been performed on ensembles of perovskite NCs. However, single-particle measurements are sometimes necessary, in order to obtain accurate correlations between their optical properties and size/morphology.…”

Section: Quantum Confinement In Perovskite Ncsmentioning

confidence: 99%

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

View full text Add to dashboard Cite

Lead halide perovskite nanocrystals (NCs) are receiving a lot of attention nowadays, due to their exceptionally high photoluminescence quantum yields reaching almost 100% and tunability of their optical band gap over the entire visible spectral range by modifying composition or dimensionality/size. We review recent developments in the direct synthesis and ion exchange-based reactions, leading to hybrid organic-inorganic (CH 3 NH 3 PbX 3 ) and all-inorganic (CsPbX 3 ) lead halide (X = Cl, Br, I) perovskite NCs, and consider their optical properties related to quantum confinement effects, single emission spectroscopy and lasing. We summarize recent developments on perovskite NCs employed as an active material in several applications such as light-emitting devices, solar cells and photodetectors, and provide a critical outlook into the existing and future challenges.

show abstract

Section: Quantum Confinement In Perovskite Ncsmentioning

confidence: 99%

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

View full text Add to dashboard Cite

show abstract

“…2,[5][6][7] Compared to classical Cd-based chalcogenide quantum dots (QDs), CsPbX 3 (X = Cl, Br, I) offer a very broad and easily adjustable composition versatility together with ample options for shape control, which allow tuning of their emission wavelength throughout the whole visible spectrum. [8][9][10][11][12][13][14] Among other applications, such highly luminescent and spectrally tunable NCs are ideally suited to produce monochromatic and white LEDs (WLEDs). 15 In this regard, CsPbX 3 NCs have been utilized as the emissive layer in electroluminescent monochromatic and color conversion QD-LEDs showing exceptionally narrow emission bandwidths and thus high color quality in devices.…”

Section: Introductionmentioning

confidence: 99%

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

Meyns

Perálvarez

Heuer‐Jungemann

et al. 2016

ACS Appl. Mater. Interfaces

313

229

View full text Add to dashboard Cite

Cesium lead halide (CsPbX 3 , X = Cl, Br, I) nanocrystals (NCs) offer exceptional optical properties for several potential applications but their implementation is hindered by a low chemical and structural stability and limited processability. In the present work, we developed a new method to efficiently coat CsPbX 3 NCs, which resulted in their increased chemical and optical stability as well as processability. The method is based on the incorporation of poly(maleic anhydride-alt-1-octadecene) (PMA) into the synthesis of the perovskite NCs. The presence of PMA in the ligand shell stabilizes the NCs by tightening the ligand binding, limiting in this way the NC surface interaction with the surrounding media. We further show that these NCs can be embedded in self-standing silicone/glass plates as down-conversion filters for the fabrication of monochromatic green and white light emitting diodes (LEDs) with narrow bandwidths and appealing color characteristics.

show abstract

“…12,16,17 The size and shape of the particles are important factors determining the resulting optical properties because of their influence on the bandgap, known as the quantum size effect. 18,19 CsPbX 3 nanocrystals are frequently synthesized in the form of nanocubes, while two-dimensional morphologies such as nanosheets and nanoplatelets are also obtained.…”

Section: Influence Of Organic Ligands On Particle Morphologies Of Cspmentioning

confidence: 99%

Review—Synthesis, Luminescent Properties, and Stabilities of Cesium Lead Halide Perovskite Nanocrystals

Iso¹,

Isobe²

2017

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

All-inorganic cesium lead halide perovskite CsPbX 3 (X = Cl, Br, I) nanocrystals have emerged as promising luminescent quantum dots. In this review, we summarize recent work on their synthesis, luminescent properties, and stabilities. Through controlling the composition of the alloyed halides and quantum size effects, the band gaps and emission wavelengths of CsPbX 3 nanocrystals are readily tunable over the entire visible range. Their sharp emission line-widths extend the color gamut of liquid crystal displays. They also exhibit high photoluminescence (PL) quantum yields and fast PL lifetimes. CsPbX 3 nanocrystals with both cubic and plate shapes have been successfully synthesized through several liquid-phase methods, such as hot-injection, room-temperature, and amine-free methods. The sizes and shapes of CsPbX 3 nanocrystals can be controlled via the reaction temperature and the length of the n-alkyl carboxylic acids and n-alkylamines used in their synthesis. Several attempts have been made to improve their stabilities during storage, at high temperature, and under light irradiation, for example by incorporation of CsPbX 3 nanocrystals into silica or polymer matrixes. In the liquid crystal display (LCD) industry, much research currently focuses on achieving the Rec. 2020 color gamut, which is the color standard for ultra-high-definition television broadcasting.1 An LCD backlight is composed of blue LEDs together with phosphors converting blue light to green and red. Extending the color gamut requires sharper emission spectra from the phosphors and finer tuning of their emission wavelengths. K 2 SiF 6 :Mn 4+ has attracted attention because of its sharp red-emission spectrum.2 In contrast, conventional green phosphors doped with rare earths suffer from low color purity. In recent years, LCD backlights based on quantum dots (QDs) with high color purity have been developed. QDs also possess color-tunable properties, because the bandgaps that determine their luminescent colors can be controlled through quantum size effects. Core/shell-type CdSe/ZnS QDs are widely used, but the high toxicity of cadmium and selenium is a major drawback. Alternatively, InP/ZnS QDs have been adopted in LCD backlights, but this solution suffers from the scarcity of indium and the sensitivity of InP to ambient O 2 and H 2 O. Very recently, CsPbX 3 (X = Cl, Br, I) nanocrystals have emerged as promising QDs.3 CsPbX 3 has crystal structure of cubic perovskite, as shown in Figure 1a. CsPbX 3 QDs are novel materials with many attractive photoluminescence (PL) properties, such as high quantum yields (QYs), narrow PL peaks, and emission colors that are controllable by halide anion exchange and quantum size effects. These properties make them potentially applicable in not only wide-colorgamut displays 3,4 (Figure 2), but also photovoltaic devices, 5 lasers, 6 photodetectors, 7 and bioimaging. 8 In this review, we introduce recent work on their synthesis, luminescent properties, and stabilities. Properties of Perovskite CsPbX 3 NanocrystalsHybrid...

show abstract

Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr₃ Nanosheets with Lateral Size Control up to the Micrometer Range

Cited by 467 publications

References 28 publications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

Review—Synthesis, Luminescent Properties, and Stabilities of Cesium Lead Halide Perovskite Nanocrystals

Contact Info

Product

Resources

About

Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr3 Nanosheets with Lateral Size Control up to the Micrometer Range

Cited by 467 publications

References 28 publications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

Review—Synthesis, Luminescent Properties, and Stabilities of Cesium Lead Halide Perovskite Nanocrystals

Contact Info

Product

Resources

About

Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr₃ Nanosheets with Lateral Size Control up to the Micrometer Range