Thermoelectric properties and chemical potential tuning by Cu-doping in n-type ionic conductors CuxAg2−xSe0.5Te0.5

2017 ◽  
Vol 111 ◽  
pp. 214-218 ◽  
Author(s):  
Min Ho Lee ◽  
Jae Hyun Yun ◽  
Kyunghan Ahn ◽  
Jong-Soo Rhyee
Keyword(s):  
Thermoelectric Properties ◽  
Chemical Potential ◽  
Ionic Conductors ◽  
Cu Doping

Improving the Thermoelectric Properties of Thick Sb2Te3 Film via Cu Doping and Annealing Deposited by DC Magnetron Sputtering using a Mosaic Target

2021 ◽  
Author(s):  
Nattharika Theekhasuk ◽  
Rachsak Sakdanuphab ◽  
Pilaipon Nuthongkum ◽  
Prayoonsak Pluengphon ◽  
Adul Harnwunggmoung ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Thermoelectric Properties ◽  
Dc Magnetron Sputtering ◽  
Cu Doping

Concentration‐dependent excess Cu doping behavior and influence on thermoelectric properties in Bi 2 Te 3

2021 ◽  
Author(s):  
Yong Hwan Kim ◽  
Yurian Kim ◽  
Hyun‐Sik Kim ◽  
Soon‐Mok Choi ◽  
Sang‐il Kim ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Cu Doping ◽  
Doping Behavior

Thermoelectric Properties and Chemical Potential Tuning by K- and Se-Coalloying in (Pb0.5Sn0.5)1−xKxTe0.95Se0.05

2019 ◽  
Vol 15 (3) ◽  
pp. 342-349 ◽  
Author(s):  
Dianta Ginting ◽  
Chan-Chieh Lin ◽  
Gareoung Kim ◽  
Song Yi Back ◽  
Bora Won ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Chemical Potential

scholarly journals In Situ Atom Probe Deintercalation of Lithium-Manganese-Oxide

2017 ◽  
Vol 23 (2) ◽  
pp. 314-320 ◽  
Author(s):  
Björn Pfeiffer ◽  
Johannes Maier ◽  
Jonas Arlt ◽  
Carsten Nowak
Keyword(s):  
Manganese Oxide ◽  
Chemical Potential ◽  
Methodological Approach ◽  
Ionic Mobility ◽  
Atom Probe ◽  
Lithium Manganese Oxide ◽  
Ionic Conductors ◽  
Lithium Manganese

AbstractAtom probe tomography is routinely used for the characterization of materials microstructures, usually assuming that the microstructure is unaltered by the analysis. When analyzing ionic conductors, however, gradients in the chemical potential and the electric field penetrating dielectric atom probe specimens can cause significant ionic mobility. Although ionic mobility is undesirable when aiming for materials characterization, it offers a strategy to manipulate materials directly in situ in the atom probe. Here, we present experimental results on the analysis of the ionic conductor lithium-manganese-oxide with different atom probe techniques. We demonstrate that, at a temperature of 30 K, characterization of the materials microstructure is possible without measurable Li mobility. Also, we show that at 298 K the material can be deintercalated, in situ in the atom probe, without changing the manganese-oxide host structure. Combining in situ atom probe deintercalation and subsequent conventional characterization, we demonstrate a new methodological approach to study ionic conductors even in early stages of deintercalation.

scholarly journals Enhancing thermoelectric properties of single-walled carbon nanotubes using halide compounds at room temperature and above

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bogumiła Kumanek ◽  
Grzegorz Stando ◽  
Paweł Stando ◽  
Karolina Matuszek ◽  
Karolina Z. Milowska ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Elevated Temperatures ◽  
Chemical Potential ◽  
Ambient Conditions ◽  
Simple Method ◽  
Promising Solution ◽  
Walled Carbon Nanotubes ◽  
Single Walled Cnts

AbstractCarbon nanotubes (CNTs) are materials with exceptional electrical, thermal, mechanical, and optical properties. Ever since it was demonstrated that they also possess interesting thermoelectric properties, they have been considered a promising solution for thermal energy harvesting. In this study, we present a simple method to enhance their performance. For this purpose, thin films obtained from high-quality single-walled CNTs (SWCNTs) were doped with a spectrum of inorganic and organic halide compounds. We studied how incorporating various halide species affects the electrical conductivity, the Seebeck coefficient, and the Power Factor. Since thermoelectric devices operate under non-ambient conditions, we also evaluated these materials' performance at elevated temperatures. Our research shows that appropriate dopant selection can result in almost fivefold improvement to the Power Factor compared to the pristine material. We also demonstrate that the chemical potential of the starting CNT network determines its properties, which is important for deciphering the true impact of chemical and physical functionalization of such ensembles.

scholarly journals Enhancement of thermoelectric properties over a wide temperature range by lattice disorder and chemical potential tuning in a (CuI)y(Bi2Te3)0.95−x(Bi2Se3)x(Bi2S3)0.05 quaternary system

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4190-4197 ◽  
Author(s):  
Hyunyong Cho ◽  
Song Yi Back ◽  
Jin Hee Kim ◽  
Omkaram Inturu ◽  
Ho Seong Lee ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Wide Temperature Range ◽  
Quaternary System ◽  
Chemical Potential ◽  
Temperature Dependent ◽  
Lattice Disorder ◽  
Temperature Range ◽  
System P

Temperature-dependent ZT values of (CuI)y(Bi2Te3)0.95−x(Bi2Se3)x(Bi2S3)0.05 (x = 0.05, 0.2; y = 0.0, 0.003) compounds compared with other related n-type compounds.

scholarly journals On the Role of Local Many-Body Interactions on the Thermoelectric Properties of Fullerene Junctions

Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 754
Author(s):  
Carmine Antonio Perroni ◽  
Vittorio Cataudella
Keyword(s):  
Thermoelectric Properties ◽  
Coulomb Blockade ◽  
Degrees Of Freedom ◽  
Chemical Potential ◽  
Local Electron ◽  
Strong Electron ◽  
Adiabatic Approach ◽  
Many Body Interactions ◽  
Electron Interactions

The role of local electron–vibration and electron–electron interactions on the thermoelectric properties of molecular junctions is theoretically analyzed focusing on devices based on fullerene molecules. A self-consistent adiabatic approach is used in order to obtain a non-perturbative treatment of the electron coupling to low frequency vibrational modes, such as those of the molecule center of mass between metallic leads. The approach also incorporates the effects of strong electron–electron interactions between molecular degrees of freedom within the Coulomb blockade regime. The analysis is based on a one-level model which takes into account the relevant transport level of fullerene and its alignment to the chemical potential of the leads. We demonstrate that only the combined effect of local electron–vibration and electron–electron interactions is able to predict the correct behavior of both the charge conductance and the Seebeck coefficient in very good agreement with available experimental data.

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