New Directions for Low‐Dimensional Thermoelectric Materials

Dresselhaus, M. S.; Chen, Gang; Tang, Ming; Yang, Ronggui; Lee, Hohyun; Wang, Dezhi; Ren, Zhifeng; Fleurial, Jean‐Pierre; Gogna, P.

doi:10.1002/adma.200600527

Cited by 3,581 publications

(2,403 citation statements)

References 46 publications

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“…[80] According to solid state physical principles, the ZT value for bulk mate rials with a single parabolic band (SPB) along a certain direc tion can be given as: [4] The timeline for thermoelectric bulk materials with 2D structures, showing data from a superlattice, [8] SnSe, [11,[19][20][21] Bi 2 Te 3 , [12,14,16,17,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] BiCuSeO, [12,[42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] Na x CoO 2 , [57,58] Ca 3 Co 4 O 9 , [5...…”

Section: Strategies From Artificial Superlatticesmentioning

confidence: 99%

Promising Thermoelectric Bulk Materials with 2D Structures

2017

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Given that more than two thirds of all energy is lost, mostly as waste heat, in utilization processes worldwide, thermoelectric materials, which can directly convert waste heat to electricity, provide an alternative option for optimizing energy utilization processes. After the prediction that superlattices may show high thermoelectric performance, various methods based on quantum effects and superlattice theory have been adopted to analyze bulk materials, leading to the rapid development of thermoelectric materials. Bulk materials with two‐dimensional (2D) structures show outstanding properties, and their high performance originates from both their low thermal conductivity and high Seebeck coefficient due to their strong anisotropic features. Here, the advantages of superlattices for enhancing the thermoelectric performance, the transport mechanism in bulk materials with 2D structures, and optimization methods are discussed. The phenomenological transport mechanism in these materials indicates that thermal conductivities are reduced in 2D materials with intrinsically short mean free paths. Recent progress in the transport mechanisms of Bi2Te3‐, SnSe‐, and BiCuSeO‐based systems is summarized. Finally, possible research directions to enhance the thermoelectric performance of bulk materials with 2D structures are briefly considered.

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Section: Strategies From Artificial Superlatticesmentioning

confidence: 99%

Promising Thermoelectric Bulk Materials with 2D Structures

2017

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“…[15][16][17] Recently, there is a progress in managing phonons by nanostructured phononic crystals (PnCs) [18][19][20][21][22][23] which control heat by making use of phononic properties. It heralds the next technological revolution in phononics, such as thermal rectifiers, [15,[24][25][26][27][28][29] optomechanical crystals, [30,31] thermal cloaking, [32][33][34][35][36] thermoelectrics, [37][38][39][40][41] and thermocrystals. [18,21,22] When the characteristic size of nanostructured PnCs is closed to the wavelength of phonons, PnCs may manipulate the phonon band structures which lead to the phonon confinement.…”

Section: Introductionmentioning

confidence: 99%

Manipulating the temperature dependence of the thermal conductivity of graphene phononic crystal

Yang

et al. 2016

Nanotechnology

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By using non-equilibrium molecular dynamics simulations (NEMD), the modulation on temperature dependence of thermal conductivity of graphene phononic crystals (GPnCs) are investigated. It is found that the temperature dependence of thermal conductivity of GPnCs follows ~ T -α behavior. The power exponents (α) can be efficiently tuned by changing the characteristic size of GPnCs. The phonon participation ratio spectra and dispersion relation reveal that the long-range phonon modes are more affected in GPnCs with larger size of holes (L0). Our results suggest that constructing GPnCs is an effective method to manipulate the temperature dependence of thermal conductivity of graphene, which would be beneficial for developing GPnCs-based thermal management and signal processing devices.

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“…[56,57,[70][71][72][73][74][75] Nanostructured thermoelectric materials have recently received considerable attention because of their potential to overcome the efficiency of conventional bulk thermoelectric materials. With decreasing dimensionality, the new variable of size becomes available, offering a possibility to dramatically change the density of electronic states and allowing new opportunities to vary electrical and thermal properties independently.…”

Section: Thermoelectric Materialsmentioning

confidence: 99%

Functional Materials for Sustainable Energy Technologies: Four Case Studies

Кузнецов

Edwards

2010

ChemSusChem

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The critical topic of energy and the environment has rarely had such a high profile, nor have the associated materials challenges been more exciting. The subject of functional materials for sustainable energy technologies is demanding and recognized as a top priority in providing many of the key underpinning technological solutions for a sustainable energy future. Energy generation, consumption, storage, and supply security will continue to be major drivers for this subject. There exists, in particular, an urgent need for new functional materials for next‐generation energy conversion and storage systems. Many limitations on the performances and costs of these systems are mainly due to the materials′ intrinsic performance. We highlight four areas of activity where functional materials are already a significant element of world‐wide research efforts. These four areas are transparent conducting oxides, solar energy materials for converting solar radiation into electricity and chemical fuels, materials for thermoelectric energy conversion, and hydrogen storage materials. We outline recent advances in the development of these classes of energy materials, major factors limiting their intrinsic functional performance, and potential ways to overcome these limitations.

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New Directions for Low‐Dimensional Thermoelectric Materials

Cited by 3,581 publications

References 46 publications

Promising Thermoelectric Bulk Materials with 2D Structures

Promising Thermoelectric Bulk Materials with 2D Structures

Manipulating the temperature dependence of the thermal conductivity of graphene phononic crystal

Functional Materials for Sustainable Energy Technologies: Four Case Studies

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