Template-directed self-organization of colloidal PbTe nanocrystals into pillars, conformal coatings, and self-supported membranes

Piotrowski, Marek; Borme, Jérôme; Carbó‐Argibay, Enrique; Sharma, Deepanjan; Nicoara, Nicoleta; Sadewasser, Sascha; Petrovykh, Dmitri Y.; Rodríguez‐Abreu, Carlos; Kolen’ko, Yury V.

doi:10.1039/c9na00370c

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…In this paper, we discuss structural aspects of lead telluride (PbTe) NPs deposited onto a Si substrate [14]. A comprehensive account of PbTe is given by Lalonde et al [15].…”

Section: Introductionmentioning

confidence: 99%

Structural properties of PbTe quantum dots revealed by high-energy x-ray diffraction

Pussi

Barbiellini

Ohara

et al. 2020

J. Phys.: Condens. Matter

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High-energy X-ray diffraction (HE-XRD) experiments combined with an analysis based on atomic-pair-distribution functions can be an effective tool for probing lowdimensional materials. Here, we show how such an analysis can be used to gain insight into structural properties of PbTe nanoparticles. We interpret our HE-XRD data using an orthorhombic Pnma phase of PbTe, which is an orthorhombic distortion of the rocksalt phase. Although local crystal geometry can vary substantially with particle size at scales below 10 nm, and for very small nanoparticles the particle size itself influences X-ray diffraction patterns, our study shows that HE-XRD can provide a unique nano-characterization tool for unraveling structural properties of nanoscale systems.

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“…In this paper, we discuss structural aspects of lead telluride (PbTe) NPs deposited onto a Si substrate [14]. A comprehensive account of PbTe is given by Lalonde et al [15].…”

Section: Introductionmentioning

confidence: 99%

Structural properties of PbTe quantum dots revealed by high-energy x-ray diffraction

Pussi

Barbiellini

Ohara

et al. 2020

J. Phys.: Condens. Matter

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“…Our laboratory has been exploring colloidal syntheses , of the chalcogenides in the context of TE applications, wherein the as-synthesized low-dimension particles serve as building blocks for the preparation of either TE thin films with reduced thermal conductivity − or bulk chalcogenides samples with enhanced ZT . Originally, we developed gram-scale colloidal synthesis of CuInSe 2 particles and then extended the scope of the developed synthesis protocol to the preparation of hexagonal-shaped plate-like Bi 2 Te 2.7 Se 0.3 nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Colloidal Synthesis of Chalcogenides for Thermoelectric Applications

Sousa

Sarkar

Lebedev

et al. 2023

ACS Appl. Mater. Interfaces

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A simple and effective preparation of solutionprocessed chalcogenide thermoelectric materials is described. First, PbTe, PbSe, and SnSe were prepared by gram-scale colloidal synthesis relying on the reaction between metal acetates and diphenyl dichalcogenides in hexadecylamine solvent. The resultant phase-pure chalcogenides consist of highly crystalline and defectfree particles with distinct cubic-, tetrapod-, and rod-like morphologies. The powdered PbTe, PbSe, and SnSe products were subjected to densification by spark plasma sintering (SPS), affording dense pellets of the respective chalcogenides. Scanning electron microscopy shows that the SPS-derived pellets exhibit fine nano-/micro-structures dictated by the original morphology of the key constituting particles, while the powder X-ray diffraction and electron microscopy analyses confirm that the SPS-derived pellets are phase-pure materials, preserving the structure of the colloidal synthesis products. The resultant solution-processed PbTe, PbSe, and SnSe exhibit low thermal conductivity, which might be due to the enhanced phonon scattering developed over fine microstructures. For undoped n-type PbTe and p-type SnSe samples, an expected moderate thermoelectric performance is achieved. In contrast, an outstanding figure-of-merit of 0.73 at 673 K was achieved for undoped n-type PbSe outperforming, the majority of the optimized PbSe-based thermoelectric materials. Overall, our findings facilitate the design of efficient solution-processed chalcogenide thermoelectrics.

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“…have a beneficial characteristic; they can alter their morphological, magnetic, and chemical properties in interaction with biomolecular systems [ 10 , 11 , 12 , 13 , 14 , 15 ]. Also, the clusters are reorganized by well-defined structures and specified by a precise quantum confinement's model [ 16 , 17 ]. Therefore, the variation of the sizes of the structures of the clusters regulates the efficiency of the opto-electronic behavior of the compounds [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Stability, spectroscopic, electrochemistry and QTAIM analysis of Cu-Znn−1On clusters for glucose sensing application: A study on theoretical and experimental insights

Gassoumi

Dlala²,

Echabaane³

et al. 2022

Heliyon

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Template-directed self-organization of colloidal PbTe nanocrystals into pillars, conformal coatings, and self-supported membranes

Abstract: We produce morphologies relevant for integration with miniaturized devices—microscale pillars, conformal coatings, and self-supported membranes—via template-directed self-organization of PbTe colloidal nanocrystals.

Cited by 8 publications

References 33 publications

Structural properties of PbTe quantum dots revealed by high-energy x-ray diffraction

Structural properties of PbTe quantum dots revealed by high-energy x-ray diffraction

Large-Scale Colloidal Synthesis of Chalcogenides for Thermoelectric Applications

Stability, spectroscopic, electrochemistry and QTAIM analysis of Cu-Znn−1On clusters for glucose sensing application: A study on theoretical and experimental insights

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