Enhanced thermoelectric properties in boron nitride quantum-dot

Pan, Chang-Ning; He, Jun

doi:10.1016/j.rinp.2017.03.032

Cited by 19 publications

(11 citation statements)

References 28 publications

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“…Thermal conductivity of the Si−Ge QDs can be decreased by a factor of at least 165 compared with bulk Si. The ballistic thermoelectric properties in h‐ BN QDs were investigated using the NEGF approach and the Landauer transport theory . The phonon transport is substantially suppressed by the interface in QDs.…”

Section: Properties Revealed By Computational Simulationsmentioning

confidence: 99%

“…The ballistic thermoelectric properties in h-BN QDs were investigated using the NEGF approach and the Landauer transport theory. [105,106] The phonon transport is substantially suppressed by the interface in QDs. The high thermoelectric ZT~0.78 can be obtained at 300 K and ZT~0.95 at 100 K. It is much higher than that of graphene QDs with the same geometry parameters, which is ZT~0.29 at 300 K and ZT0 .48 at 100 K. The underlying mechanism is that the h-BN QDs possess higher thermopower and lower phonon thermal conductance than the graphene QDs.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Effects of temperature on the phonon thermal conductance of graphene and h-BN QDs (units: nW/k) [105]. …”

mentioning

confidence: 99%

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Overview of Computational Simulations in Quantum Dots

Yang

et al. 2019

Israel Journal of Chemistry

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Quantum dots (QDs) are semiconductor nanocrystals that exhibit exceptional properties not found in their bulk counterparts. They have attracted extensive academic and industrial attentions due to their quantum confinement effects and unique photophysical properties. Computational approaches such as first principles and classical molecular dynamics simulations are indispensable tools in both scientific studies and industrial applications of QDs. In this review, the state‐of‐the‐art progress in computational simulations of optical, electronic and thermal properties of QDs is summarized and discussed. First, the physics of QDs in low dimensional materials are comprehensively reviewed. Then, the theoretical basis and practical applications of two main computational methods are presented. Properties of QDs revealed by computational studies are summarized respectively. Finally, the paper was concluded with comments on future directions in computational modeling of QDs.

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Section: Properties Revealed By Computational Simulationsmentioning

confidence: 99%

Section: Thermal Propertiesmentioning

confidence: 99%

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Overview of Computational Simulations in Quantum Dots

Yang

et al. 2019

Israel Journal of Chemistry

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“…Low dimensional boron nitride (BN) materials such as BN nanosheets and BN nanotubes (BNNTs) have gained substantial attention [1][2][3][4][5][6][7][8][9]. BN materials are isoelectric to carbon solids.…”

Section: Introductionmentioning

confidence: 99%

A Review on van der Waals Boron Nitride Quantum Dots

Acharya

Sharma

Liu

et al. 2021

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Boron nitride quantum dots (BNQDs) have gained increasing attention for their versatile fluorescent, optoelectronic, chemical, and biochemical properties. During the past few years, significant progress has been demonstrated, started from theoretical modeling to actual application. Many interesting properties and applications have been reported, such as excitation-dependent emission (and, in some cases, non-excitation dependent), chemical functionalization, bioimaging, phototherapy, photocatalysis, chemical, and biological sensing. An overview of this early-stage research development of BNQDs is presented in this article. We have prepared un-bias assessments on various synthesis methods, property analysis, and applications of BNQDs here, and provided our perspective on the development of these emerging nanomaterials for years to come.

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“…In a succession of experiments conducted between the years 1820 and 1823, he verified the electrical potential in the juncture-points of two different metals when there is a heat difference between the joints. This was later known as the Seebeck Effect and it serves as the origin of the thermocouple which is considered the most accurate measurement of temperature [3][4][5][6][7]. The schematic timeline of the thermometer is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dots as New Generation Materials for Nanothermometer: Review

Mohammed

Omer

2020

Nanoscale Res Lett

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Highly sensitive non-contact mode temperature sensing is substantial for studying fundamental chemical reactions, biological processes, and applications in medical diagnostics. Nanoscale-based thermometers are guaranteeing non-invasive probes for sensitive and precise temperature sensing with subcellular resolution. Fluorescence-based temperature sensors have shown great capacity since they operate as “non-contact” mode and offer the dual functions of cellular imaging and sensing the temperature at the molecular level. Advancements in nanomaterials and nanotechnology have led to the development of novel sensors, such as nanothermometers (novel temperature-sensing materials with a high spatial resolution at the nanoscale). Such nanothermometers have been developed using different platforms such as fluorescent proteins, organic compounds, metal nanoparticles, rare-earth-doped nanoparticles, and semiconductor quantum dots. Carbon dots (CDs) have attracted interest in many research fields because of outstanding properties such as strong fluorescence, photobleaching resistance, chemical stability, low-cost precursors, low toxicity, and biocompatibility. Recent reports showed the thermal-sensing behavior of some CDs that make them an alternative to other nanomaterials-based thermometers. This kind of luminescent-based thermometer is promising for nanocavity temperature sensing and thermal mapping to grasp a better understanding of biological processes. With CDs still in its early stages as nanoscale-based material for thermal sensing, in this review, we provide a comprehensive understanding of this novel nanothermometer, methods of functionalization to enhance thermal sensitivity and resolution, and mechanism of the thermal sensing behavior.

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Enhanced thermoelectric properties in boron nitride quantum-dot

Cited by 19 publications

References 28 publications

Overview of Computational Simulations in Quantum Dots

Overview of Computational Simulations in Quantum Dots

A Review on van der Waals Boron Nitride Quantum Dots

Carbon Dots as New Generation Materials for Nanothermometer: Review

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