Orbitally driven low thermal conductivity of monolayer gallium nitride (GaN) with planar honeycomb structure: a comparative study

Nanoscale ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 4295-4309 ◽  
Author(s):  
Zhenzhen Qin ◽  
Guangzhao Qin ◽  
Xu Zuo ◽  
Zhihua Xiong ◽  
Ming Hu
Keyword(s):  
Thermal Conductivity ◽  
Gallium Nitride ◽  
Comparative Study ◽  
Honeycomb Structure ◽  
Low Thermal Conductivity

Two-dimensional bucking structure induces the ultra-low thermal conductivity: A comparative study of the group GaX (X = N, P, As)

2022 ◽  
Author(s):  
Chen Shen ◽  
Niloofar Hadaeghi ◽  
Harish K. Singh ◽  
Teng Long ◽  
Ling Fan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Gallium Nitride ◽  
Comparative Study ◽  
Transport Properties ◽  
Honeycomb Structure ◽  
Phonon Transport ◽  
Two Dimensional ◽  
Low Thermal Conductivity

With the successful synthesis of the two-dimensional (2D) gallium nitride (GaN) in a planar honeycomb structure, the phonon transport properties of 2D GaN have been reported. However, it still remains...

scholarly journals Thermal Conductivity of Wurtzite Zinc-Oxide from First-Principles Lattice Dynamics – a Comparative Study with Gallium Nitride

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Xufei Wu ◽  
Jonghoon Lee ◽  
Vikas Varshney ◽  
Jennifer L. Wohlwend ◽  
Ajit K. Roy ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Zinc Oxide ◽  
Gallium Nitride ◽  
Comparative Study ◽  
First Principles ◽  
Lattice Dynamics

scholarly journals Unusually low thermal conductivity of gallium nitride nanowires

2008 ◽  
Vol 103 (6) ◽  
pp. 064319 ◽  
Author(s):  
Csaba Guthy ◽  
Chang-Yong Nam ◽  
John E. Fischer
Keyword(s):  
Thermal Conductivity ◽  
Gallium Nitride ◽  
Low Thermal Conductivity

Superhigh out-of-plane piezoelectricity, low thermal conductivity and photocatalytic abilities in ultrathin 2D van der Waals heterostructures of boron monophosphide and gallium nitride

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21880-21890 ◽  
Author(s):  
Manish Kumar Mohanta ◽  
Ashima Rawat ◽  
Dimple Dimple ◽  
Nityasagar Jena ◽  
Raihan Ahammed ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Gallium Nitride ◽  
Energy Conversion ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Low Thermal Conductivity ◽  
Out Of Plane

A stable 2D van der Waals (vdW) heterobilayer constituted by boron monophosphide (BP) and Gallium Nitride (GaN) monolayers for different kinds of energy conversion and nanoelectronics.

Structure and Thermoelectric Properties of New Quaternary Tin and Lead Bismuth Selenides, K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1+xSn5-xBi11+xSe22

2000 ◽  
Vol 626 ◽  
Author(s):  
Antje Mrotzek ◽  
Kyoung-Shin Choi ◽  
Duck-Young Chung ◽  
Melissa A. Lane ◽  
John R. Ireland ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
Thermoelectric Properties ◽  
Three Dimensional ◽  
Structure Type ◽  
Narrow Gap ◽  
Low Thermal Conductivity ◽  
Seebeck Coefficients ◽  
Metal Atoms ◽  
Anionic Framework

ABSTRACTWe present the structure and thermoelectric properties of the new quaternary selenides K1+xM4–2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22. The compounds K1+xM4-2xBi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible “rattling” K+ ions.

A Novel Poly(Ionic Liquid) as the Thermal Insulating Material

2020 ◽  
Vol 13 (3) ◽  
pp. 241-247
Author(s):  
Wenxin Wei ◽  
Guifeng Ma ◽  
Hongtao Wang ◽  
Jun Li
Keyword(s):  
Thermal Conductivity ◽  
Ionic Liquid ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Flame Resistance ◽  
Insulating Material ◽  
Low Thermal Conductivity ◽  
Thermal Insulating ◽  
Poly Ionic Liquid

Objective: A new poly(ionic liquid)(PIL), poly(p-vinylbenzyltriphenylphosphine hexafluorophosphate) (P[VBTPP][PF6]), was synthesized by quaternization, anion exchange reaction, and free radical polymerization. Then a series of the PIL were synthesized at different conditions. Methods: The specific heat capacity, glass-transition temperature and melting temperature of the synthesized PILs were measured by differential scanning calorimeter. The thermal conductivities of the PILs were measured by the laser flash analysis method. Results: Results showed that, under optimized synthesis conditions, P[VBTPP][PF6] as the thermal insulator had a high glass-transition temperature of 210.1°C, high melting point of 421.6°C, and a low thermal conductivity of 0.0920 W m-1 K-1 at 40.0°C (it was 0.105 W m-1 K-1 even at 180.0°C). The foamed sample exhibited much low thermal conductivity λ=0.0340 W m-1 K-1 at room temperature, which was comparable to a commercial polyurethane thermal insulating material although the latter had a much lower density. Conclusion: In addition, mixing the P[VBTPP][PF6] sample into polypropylene could obviously increase the Oxygen Index, revealing its efficient flame resistance. Therefore, P[VBTPP][PF6] is a potential thermal insulating material.

Origin of low thermal conductivity in monolayer PbI2

2021 ◽  
Vol 327 ◽  
pp. 114223
Author(s):  
E. Bolen ◽  
E. Deligoz ◽  
H. Ozisik
Keyword(s):  
Thermal Conductivity ◽  
Low Thermal Conductivity

Thermoelectric properties of PEDOT:PSS aerogel secondary-doped in supercritical CO2 atmosphere with low thermal conductivity

Polymer ◽  
2020 ◽  
Vol 206 ◽  
pp. 122912
Author(s):  
Naoya Yanagishima ◽  
Shinji Kanehashi ◽  
Hiromu Saito ◽  
Kenji Ogino ◽  
Takeshi Shimomura
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Supercritical Co2 ◽  
Low Thermal Conductivity ◽  
Co2 Atmosphere
Sign in / Sign up

Export Citation Format

Share Document