Thermal conductivity of NbSe3

Brill, J. W.; Tzou, C. P.; Verma, G.; Ong, Nai Phuan

doi:10.1016/0038-1098(81)90663-3

Cited by 16 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Determining the thermal conductivity of fibers with diameters less than 12 μm is challenging. Here, we used a self-heating technique , that takes advantage of the electrically conducting nature of the fibers to determine the thermal conductivity at liquid nitrogen temperatures (more details about the technique and analysis can be found in the Supporting Information). The results are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…The thermal conductivities, κ, were measured for specimens from a coagulation bath sample with total draw of 1.58 and DMSO stretched samples with total draws of 1.72, 1.97, and 2.36 using a self-heating technique , (all samples spun into 10 vol % DMSO in IPA); 3–4 specimens from each sample were measured. In short, the resistance of the specimen, mounted in a four-probe configuration, was measured as a function of applied current.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Sarabia-Riquelme

Shahi

Brill

et al. 2019

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

New electrically conducting and mechanically robust fibers and yarns are needed as building blocks for emerging textile devices. In this work, we describe a continuous wet-spinning process for the fabrication of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) fibers with high electrical conductivity, excellent mechanical properties, and moderate thermoelectric performance by including a drawing stage in dimethyl sulfoxide. Drawing the fibers induced preferential orientation of the polymer chains in the fiber axis direction. With increased drawing, the room temperature electrical conductivity saturated at approximately 2000 S cm–1. The Seebeck coefficient was found to be rather constant with drawing. Therefore, the thermoelectric power factor saturated with applied draw between 40 and 50 μW m–1 K–2. The thermal conductivities of the drawn fibers were measured between 4 and 5 W m–1 K–1 at liquid nitrogen temperatures. Although the relatively high thermal conductivity negatively affects the ultimate thermoelectric performance, it can be beneficial for other applications such as in electrical interconnections. Additionally, at high draw ratios, the Young’s moduli saturated at near 15.5 GPa with maximum break stresses of 425 MPa. To the best of our knowledge, this Young’s modulus is the highest reported for a PEDOT:PSS material. Further, we investigated the degree of preferred orientation by wide-angle X-ray scattering and found a strong correlation between the orientation of the polymer chains along the fiber axis and the trends observed in the fibers’ properties. In general, the fibers with the highest orientation were also the stiffest and the most conducting fibers. We believe these are important steps toward the continuous fabrication of high performance PEDOT:PSS fibers to be used as building blocks in the emerging field of electronic textiles.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Sarabia-Riquelme

Shahi

Brill

et al. 2019

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…The most commonly cited value is K≈600 W/mK along the basal plane at room temperature (RT) [45]. This is substantially higher than the values for typical TMCs with MX3 atomic composition, which are in the 3.5 -30 W/mK range [46][47][48][49]. The SiO2 layer under TaSe3 is also thermally resistive with the thermal conductivity K = 0.5−1.4 W/mK at RT [50].…”

mentioning

confidence: 97%

“…45 This is substantially higher than the values for typical TMCs with MX 3 atomic composition, which are in the 3.5-30 W mK −1 range. [46][47][48][49] The SiO 2 layer under TaSe 3 is also thermally resistive with the thermal conductivity K = 0.5 − 1.4 W mK −1 at RT. 50 This is more than one hundred times smaller than that of Si, which has K = 145 W mK −1 in bulk form.…”

mentioning

confidence: 99%

Breakdown current density in h-BN-capped quasi-1D TaSe₃metallic nanowires: prospects of interconnect applications

et al. 2016

View full text Add to dashboard Cite

We report on the current-carrying capacity of the nanowires made from the quasi-1D van der Waals metal tantalum triselenide capped with quasi-2D boron nitride. The chemical vapor transport method followed by chemical and mechanical exfoliation were used to fabricate the mm-long TaSe3 wires with the lateral dimensions in the 20 to 70 nm range. Electrical measurements establish that the TaSe3/h-BN nanowire heterostructures have a breakdown current density exceeding 10 MA cm(-2)-an order-of-magnitude higher than that for copper. Some devices exhibited an intriguing step-like breakdown, which can be explained by the atomic thread bundle structure of the nanowires. The quasi-1D single crystal nature of TaSe3 results in a low surface roughness and in the absence of the grain boundaries. These features can potentially enable the downscaling of the nanowires to lateral dimensions in a few-nm range. Our results suggest that quasi-1D van der Waals metals have potential for applications in the ultimately downscaled local interconnects.

show abstract

“…The conductive heat transfer to the contacts is determined by the thermal conductivity κ of the material which we roughly estimate by κ ≤ α · l/(8 · A cs ), l being the length and A cs the cross-section area of the sample 35 . We obtain a value of κ ≤ 3.4 W/(m K) which agrees reasonably well with the thermal conductivity of about 1.3 W/(m K) determined for alloyed DCNQI 2 Li 0.86 Cu 0.14 at 50 K, bearing in mind the increase of thermal conductivity with increasing copper content 36 .…”

Section: Discussionmentioning

confidence: 99%

Energy exchange between phononic and electronic subsystems governing the nonlinear conduction inDCNQI2Cu

et al. 2015

View full text Add to dashboard Cite

We present a dynamical study on the nonlinear conduction behaviour in the commensurate charge-density-wave phase of the quasi-one-dimensional conductor DCNQI 2 Cu below 75 K. We can accurately simulate magnitude and time-dependence of the measured conductivity in response to large voltage pulses by accounting for the energy exchange between the phononic and electronic subsystems by means of an electrothermal model. Our simulations reveal a distinct non-equilibrium population of optical phonon states with an average energy of E ph = 19 meV being half the activation energy of about ∆E a = 39 meV observed in DC resistivity measurements. By inelastic scattering, this hot optical phonon bath generates additional charge-carrying excitations thus providing a multiplication effect while energy transferred to the acoustic phonons is dissipated out of the system via heat conduction. Therefore, in high electric fields a preferred interaction of chargecarrying excitations with optical phonons compared to acoustic phonon modes is considered to be responsible for the nonlinear conduction effects observed in DCNQI 2 Cu.

show abstract

Thermal conductivity of NbSe3

Cited by 16 publications

References 17 publications

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Breakdown current density in h-BN-capped quasi-1D TaSe₃metallic nanowires: prospects of interconnect applications

Energy exchange between phononic and electronic subsystems governing the nonlinear conduction inDCNQI2Cu

Contact Info

Product

Resources

About

Thermal conductivity of NbSe3

Cited by 16 publications

References 17 publications

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Effect of Drawing on the Electrical, Thermoelectrical, and Mechanical Properties of Wet-Spun PEDOT:PSS Fibers

Breakdown current density in h-BN-capped quasi-1D TaSe3metallic nanowires: prospects of interconnect applications

Energy exchange between phononic and electronic subsystems governing the nonlinear conduction inDCNQI2Cu

Contact Info

Product

Resources

About

Breakdown current density in h-BN-capped quasi-1D TaSe₃metallic nanowires: prospects of interconnect applications