Journal ArticleDOI
Quantum size effects in PbSe quantum wells
E.I. Rogacheva,T. V. Tavrina,O. N. Nashchekina,S. N. Grigorov,K. A. Nasedkin,M. S. Dresselhaus,Stephen B. Cronin +6 more
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TLDR
In PbSe epitaxial thin films grown by thermal evaporation on KCl(001) substrates and covered with an EuS protective layer, oscillatory dependences of the galvanomagnetic and thermoelectric properties (electrical conductivity σ, the Hall coefficient RH, charge carrier mobility μ, and the Seebeck coefficient S) were observed at room temperature as mentioned in this paper.Abstract:
In PbSe epitaxial thin films grown by thermal evaporation on KCl(001) substrates and covered with an EuS protective layer, oscillatory dependences of the galvanomagnetic and thermoelectric properties (electrical conductivity σ, the Hall coefficient RH, charge carrier mobility μ, and the Seebeck coefficient S) on the PbSe layer thickness d (3<d<200 nm) were observed at room temperature. Oscillations of the transport properties are associated with quantum size effects due to electron confinement in the PbSe quantum wells.read more
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Journal ArticleDOI
Enhanced thermopower in PbSe nanocrystal quantum dot superlattices.
Robert Y. Wang,Joseph P. Feser,Jong-Soo Lee,Dmitri V. Talapin,Rachel A. Segalman,Arun Majumdar +5 more
TL;DR: It is demonstrated that thermopower of PbSe nanocrystal solids can be tailored by charge-transfer doping and increases monotonically as the Nanocrystal size decreases due to changes in carrier concentration.
Journal ArticleDOI
Size effect in thermoelectric materials
TL;DR: In this article, the size effect in low-dimensional thermoelectric materials is reviewed, including the quantum confinement effect on carriers, and the effect of phonon confinement and interface scattering on lattice thermal conductivity.
Journal ArticleDOI
Recent progress in thermoelectric materials
Chao Han,Zhen Li,Shi Xue Dou +2 more
TL;DR: In this paper, a review of the most recently improvements in dimensionless figure of merit (ZT) in different kinds of inorganic and organic thermoelectric (TE) materials is presented.
Journal ArticleDOI
PbSe Nanocrystal Assemblies: Synthesis and Structural, Optical, and Electrical Characterization
TL;DR: In this paper, individual PbSe nanocrystals (NCs) were prepared by a chemical reaction between lead-cyclohexanebutirate and tri-butyl-phosphine/selenium precursors.
Journal ArticleDOI
Thermoelectric properties of Bi0.5Sb1.5Te3/C60 nanocomposites
V.D. Blank,Sergei G. Buga,V. A. Kulbachinskii,Vladimir G. Kytin,Viacheslav Medvedev,Y.M. Popov,Petr Stepanov,V.F. Skok +7 more
TL;DR: A thermoelectric nanocomposite of Bi0.5Sb1.5Te3 with the C60 fullerene molecules has been synthesized and studied as mentioned in this paper.
References
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Journal ArticleDOI
Effect of quantum-well structures on the thermoelectric figure of merit.
TL;DR: In this article, the authors proposed to use quantum-well superlattice structures to enhance the performance of thermoelectric coolers and showed that layering has the potential to increase significantly the figure of merit of a highly anisotropic material.
Journal ArticleDOI
Thermoelectric figure of merit of a one-dimensional conductor.
TL;DR: Calculations show that this approach has the potential to achieve a significant increase in the figure of merit over both the bulk value and the calculated two-dimensional superlattice values.
MonographDOI
The physics of low-dimensional semiconductors : an introduction
TL;DR: In this paper, the Golden Rule is applied to properties of quantum wells and the properties of GaAs-AlAs alloys at room temperature and the Hermite's equation: harmonic oscillator.
BookDOI
Semiconducting lead chalcogenides
TL;DR: The last decade has seen radical changes in our understand- ing of the physical properties of semiconductors as mentioned in this paper, and the visible evidence of the pro- gress is in the form of hundreds of publications, some of which re- port extremely refined and comprehensive investigations of semi-conducting materials.
Journal ArticleDOI
Experimental study of the effect of quantum-well structures on the thermoelectric figure of merit
TL;DR: In this article, it has been shown theoretically that it may be possible to increase the thermoelectric figure of merit (Z$) of certain materials by preparing them in the form of two-dimensional quantum-well structures.