Vanadium-doped BaTiO3 as high performance thermoelectric material: role of electronic structure engineering

Resonance states due to Bi and In co-doping, band gap enlargement, and a reduced valence-band offset in SnTe lead to a record high room-temperature ZT.

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Two-dimensional boron monochalcogenide monolayer for thermoelectric material

Sustainable Energy & Fuels ◽

10.1039/d0se00004c ◽

2020 ◽

Vol 4 (5) ◽

pp. 2363-2369 ◽

Cited By ~ 7

Author(s):

Pushkar Mishra ◽

Deobrat Singh ◽

Yogesh Sonvane ◽

Rajeev Ahuja

Keyword(s):

Electronic Structure ◽

Transport Properties ◽

Thermoelectric Material ◽

High Performance ◽

Two Dimensional ◽

Thermoelectric Devices ◽

Potential Applications

We have investigated the electronic structure, vibrational and transport properties of boron chalcogenide BX (X = S, Se, Te) materials, which may have potential applications in high-performance thermoelectric devices.

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Electronic Structure of CsBi4Te6

MRS Proceedings ◽

10.1557/proc-626-z6.2 ◽

2000 ◽

Vol 626 ◽

Author(s):

P. Larson ◽

S.D. Mahanti ◽

D-Y Chung ◽

M.G. Kanatzidis

Keyword(s):

Electronic Structure ◽

Thermoelectric Material ◽

High Performance ◽

Figure Of Merit ◽

Density Functional ◽

Energy Bands ◽

Functional Theory ◽

Energy Characteristics ◽

Large Anisotropy ◽

Structure Calculations

ABSTRACTRecently, CsBi4Te6 has been reported as a high-performance thermoelectric material for low temperature applications with a higher thermoelectric figure of merit (ZT ∼ 0.8 at 225 Kelvin) than conventional Bi2-xSbzTe3-ySey alloys at the same temperature. First-principle electronic structure calculations within density functional theory performed on this material give an indirect narrow-gap semiconductor. Dispersions of energy bands along different directions in k-space display large anisotropy and multiple conduction band minima close in energy, characteristics of a good thermoelectric material.

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Growth of vertical heterostructures based on orthorhombic SnSe/hexagonal In2Se3 for high-performance photodetectors

Nanoscale Advances ◽

10.1039/c9na00120d ◽

2019 ◽

Vol 1 (7) ◽

pp. 2606-2611 ◽

Cited By ~ 1

Author(s):

Xuan-Ze Li ◽

Yi-Fan Wang ◽

Jing Xia ◽

Xiang-Min Meng

Keyword(s):

Electronic Structure ◽

High Performance ◽

Layered Materials ◽

Two Dimensional ◽

Novel Device ◽

2D Layered Materials ◽

Device Applications ◽

Structure Engineering

Vertical heterostructures based on two-dimensional (2D) layered materials are ideal platforms for electronic structure engineering and novel device applications.

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Thermoelectric Potential of Bi and Bi1−x Sbx Nanowire Arrays

MRS Proceedings ◽

10.1557/proc-691-g10.1 ◽

2001 ◽

Vol 691 ◽

Cited By ~ 1

Author(s):

M. S. Dresselhaus ◽

Y.-M. Lina ◽

O. Rabin ◽

S. B. Cronin ◽

M. R. Black ◽

...

Keyword(s):

Thermoelectric Material ◽

High Performance ◽

Wire Diameter ◽

Nanowire Arrays ◽

Thermoelectric Performance ◽

The Wire ◽

Low Dimensional

ABSTRACTThe potential of Bi and Bi1−x Sbx nanowire arrays for thermoelectric applications is discussed. The advantages of bismuth as a low dimensional thermoelectric material are enumerated and the role of modeling is emphasized. The advantages of using the Sb concentration as well as the wire diameter as materials parameters for optimizing the thermoelectric performance of these nanowires are discussed, with particular emphasis given to the development of a high performance p-type nanowire thermoelectric material.

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Resonant States in the Electronic Structure of the High Performance ThermoelectricsAgPbmSbTe2+m: The Role of Ag-Sb Microstructures

Physical Review Letters ◽

10.1103/physrevlett.93.146403 ◽

2004 ◽

Vol 93 (14) ◽

Cited By ~ 118

Author(s):

Daniel Bilc ◽

S. D. Mahanti ◽

Eric Quarez ◽

Kuei-Fang Hsu ◽

Robert Pcionek ◽

...

Keyword(s):

Electronic Structure ◽

High Performance ◽

Resonant States

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Trace nanoanalysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100172437 ◽

1994 ◽

Vol 52 ◽

pp. 940-941

Author(s):

D. E. Newbury ◽

R. D. Leapman

Keyword(s):

High Performance ◽

Secondary Ion Mass Spectrometry ◽

Detection Efficiency ◽

Volume Element ◽

And Performance ◽

Trace Constituents ◽

Secondary Ion ◽

Concentration Levels ◽

Structure Properties

Trace constituents, which can be very loosely defined as those present at concentration levels below 1 percent, often exert influence on structure, properties, and performance far greater than what might be estimated from their proportion alone. Defining the role of trace constituents in the microstructure, or indeed even determining their location, makes great demands on the available array of microanalytical tools. These demands become increasingly more challenging as the dimensions of the volume element to be probed become smaller. For example, a cubic volume element of silicon with an edge dimension of 1 micrometer contains approximately 5×1010 atoms. High performance secondary ion mass spectrometry (SIMS) can be used to measure trace constituents to levels of hundreds of parts per billion from such a volume element (e. g., detection of at least 100 atoms to give 10% reproducibility with an overall detection efficiency of 1%, considering ionization, transmission, and counting).

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Two Short Tests Fail to Detect Vigilance Decrements

European Journal of Psychological Assessment ◽

10.1027//1015-5759.17.1.48 ◽

2001 ◽

Vol 17 (1) ◽

pp. 48-55 ◽

Cited By ~ 6

Author(s):

Juan Botella ◽

María José Contreras ◽

Pei-Chun Shih ◽

Víctor Rubio

Keyword(s):

Individual Differences ◽

High Performance ◽

Selection Process ◽

Vigilance Task ◽

Air Traffic Controllers ◽

Job Selection ◽

Performance Deterioration ◽

Short Test ◽

Psychological Dimensions

Summary: Deterioration in performance associated with decreased ability to sustain attention may be found in long and tedious task sessions. The necessity for assessing a number of psychological dimensions in a single session often demands “short” tests capable of assessing individual differences in abilities such as vigilance and maintenance of high performance levels. In the present paper two tasks were selected as candidates for playing this role, the Abbreviated Vigilance Task (AVT) by Temple, Warm, Dember, LaGrange and Matthews (1996) and the Continuous Attention Test (CAT) by Tiplady (1992) . However, when applied to a sample of 829 candidates in a job-selection process for air-traffic controllers, neither of them showed discriminative capacity. In a second study, an extended version of the CAT was applied to a similar sample of 667 subjects, but also proved incapable of properly detecting individual differences. In short, at least in a selection context such as that studied here, neither of the tasks appeared appropriate for playing the role of a “short” test for discriminating individual differences in performance deterioration in sustained attention.

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