4.8 Article

High-Power Factor Enabled by Efficient Manipulation Interaxial Angle for Enhancing Thermoelectrics of GeTe-Cu2Te Alloys

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

High-performance in n-type PbTe-based thermoelectric materials achieved by synergistically dynamic doping and energy filtering

Hang-Tian Liu et al.

Summary: By introducing Ag2Te and dynamically doping silver into n-type Pb0.975Cr0.025Te, a peak figure of merit of 1.5 at 773K was achieved. The high value is attributed to the synergistic optimization of carrier and phonon transports. Ag2Te nanoprecipitates establish coherent interfaces with the matrix to induce energy-dependent carrier scattering and maintain relatively high carrier mobility, leading to optimal electrical-transport properties over a wide temperature range.

NANO ENERGY (2022)

Article Multidisciplinary Sciences

High thermoelectric performance realized through manipulating layered phonon-electron decoupling

Lizhong Su et al.

Summary: Thermoelectric materials offer the potential for direct conversion of heat into electricity. Phonon-electron decoupling plays a critical role in achieving high-performance thermoelectrics.

SCIENCE (2022)

Article Chemistry, Multidisciplinary

Roles of Anion Sites in High-Performance GeTe Thermoelectrics

Meng Li et al.

Summary: This study provides a comprehensive discussion on the influence of anionic doping on the performance of rocksalt-structured thermoelectric materials. The experimental results show that anionic Iodine doping can optimize the electrical and thermal properties of GeTe samples. In addition, co-doping of cationic Bismuth and anionic Iodine can further enhance the figure-of-merit and achieve higher heat-to-electricity conversion efficiency.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Physical

Enhanced thermoelectric performance in high-defect SnTe alloys: a significant role of carrier scattering

Fujie Zhang et al.

Summary: The introduction of sufficient Sb2Te3 and Cd into the SnTe matrix generates more vacancies and optimizes the band structure, leading to improved multivalent band transport. This synergistic effect helps achieve a peak zT of around 1.3 and an average zT of approximately 0.87 in the Sn0.94Cd0.06Te-0.08Sb(2)Te(3) sample, demonstrating the potential of this approach for enhancing thermoelectric performance in other materials.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Article Physics, Applied

Improved thermoelectric performance of GeTe via efficient yttrium doping

Weihong Gao et al.

Summary: The study found that Y-doping significantly reduced carrier concentration in the GeTe system, enhancing the power factor and boosting thermoelectric performance. Additionally, Bi doping was more effective than Sb doping in increasing electrical resistivity and improving performance.

APPLIED PHYSICS LETTERS (2021)

Article Multidisciplinary Sciences

High-entropy-stabilized chalcogenides with high thermoelectric performance

Binbin Jiang et al.

Summary: By utilizing entropy-driven structural stabilization, we increased the figure of merit (zT) value to 1.8 in an n-type PbSe-based high-entropy material at 900 kelvin, showcasing a promising method to enhance the performance of thermoelectric materials.

SCIENCE (2021)

Article Chemistry, Physical

Engineering Electronic Structure and Lattice Dynamics to Achieve Enhanced Thermoelectric Performance of Mn-Sb Co-Doped GeTe

Ashutosh Kumar et al.

Summary: GeTe, as a promising lead-free mid-temperature-range thermoelectric material, shows improved energy conversion efficiency with Mn-Sb co-doping. The optimized Seebeck coefficient and electrical conductivity contribute to an enhanced power factor, while the reduction in lattice thermal conductivity leads to a maximum figure-of-merit of 1.67 at 773 K.

CHEMISTRY OF MATERIALS (2021)

Article Chemistry, Physical

Versatile Vanadium Doping Induces High Thermoelectric Performance in GeTe via Band Alignment and Structural Modulation

Qiang Sun et al.

Summary: The study demonstrates that V doping can effectively improve the thermoelectric performance of GeTe, achieving a peak ZT of over 2.1 at 773 K. Structural optimizations including carrier concentration control and enhancement of grain boundaries lead to significantly improved thermoelectric properties.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Multidisciplinary

Medium Entropy-Enabled High Performance Cubic GeTe Thermoelectrics

Shizhen Zhi et al.

Summary: Configurational entropy is a novel descriptor in the functional materials genome, allowing for the tuning of carrier mobility and lattice thermal conductivity in thermoelectric materials. Medium-entropy alloying can enhance the thermoelectric performance in GeTe materials by suppressing phase transitions and balancing carrier mobility.

ADVANCED SCIENCE (2021)

Article Chemistry, Physical

The origin of the lattice thermal conductivity enhancement at the ferroelectric phase transition in GeTe

Dorde Dangic et al.

Summary: The proximity to structural phase transitions in IV-VI thermoelectric materials is one of the main reasons for their large phonon anharmonicity and intrinsically low lattice thermal conductivity kappa. However, the increase in kappa of GeTe at the ferroelectric phase transition near 700 K is attributed to negative thermal expansion in the rhombohedral phase and an increase in the phonon lifetimes in the high-symmetry phase. The strong anharmonicity near the phase transition results in non-Lorentzian shapes of the phonon power spectra.

NPJ COMPUTATIONAL MATERIALS (2021)

Article Nanoscience & Nanotechnology

Enhancing Near-Room-Temperature GeTe Thermoelectrics through In/Pb Co-doping

Juan Li et al.

Summary: GeTe has received much attention recently for its high thermoelectric performance, with In and Pb doping enhancing the density of effective mass and optimizing carrier concentration. The addition of Pb/Ge further reduces lattice thermal conductivity, leading to high zT values and demonstrating GeTe as a promising candidate for near-room-temperature applications.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Chemistry, Physical

Physical Insights on the Lattice Softening Driven Mid-Temperature Range Thermoelectrics of Ti/Zr-Inserted SnTe-An Outlook Beyond the Horizons of Conventional Phonon Scattering and Excavation of Heikes' Equation for Estimating Carrier Properties

Ahmad Rifqi Muchtar et al.

Summary: The study explores the use of new dopants to improve the thermoelectric performance of SnTe-based materials, reducing the need for a large temperature gradient. The enhanced performance is mainly attributed to improved weighted mobility, coupling of charge carriers with magnetic entropy, and weakening of chemical bonds.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Multidisciplinary

Energy Filtering of Charge Carriers: Current Trends, Challenges, and Prospects for Thermoelectric Materials

Chhatrasal Gayner et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

Article Chemistry, Multidisciplinary

Air-Stable Monolayer Cu2Se Exhibits a Purely Thermal Structural Phase Transition

Kai Qian et al.

ADVANCED MATERIALS (2020)

Review Chemistry, Physical

High-Performance GeTe-Based Thermoelectrics: from Materials to Devices

Wei-Di Liu et al.

ADVANCED ENERGY MATERIALS (2020)

Article Materials Science, Multidisciplinary

Enhanced thermoelectric performance through crystal field engineering in transition metal-doped GeTe

J. Shuai et al.

MATERIALS TODAY PHYSICS (2019)

Article Materials Science, Multidisciplinary

Dilute Cu2Te-alloying enables extraordinary performance of r-GeTe thermoelectrics

Z. Bu et al.

MATERIALS TODAY PHYSICS (2019)

Article Chemistry, Multidisciplinary

Medium-temperature thermoelectric GeTe: vacancy suppression and band structure engineering leading to high performance

Jinfeng Dong et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

Article Chemistry, Physical

Impact of Coinage Metal Insertion on the Thermoelectric Properties of GeTe Solid-State Solutions

Bhuvanesh Srinivasan et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2018)

Review Chemistry, Multidisciplinary

Manipulation of Phonon Transport in Thermoelectrics

Zhiwei Chen et al.

ADVANCED MATERIALS (2018)

Article Chemistry, Physical

Germanium Chalcogenide Thermoelectrics: Electronic Structure Modulation and Low Lattice Thermal Conductivity

Subhajit Roychowdhury et al.

CHEMISTRY OF MATERIALS (2018)

Article Chemistry, Multidisciplinary

Vacancy Manipulation for Thermoelectric Enhancements in GeTe Alloys

Xinyue Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

Article Nanoscience & Nanotechnology

Thermoelectric Transport Properties of CdxBiyGe1-x-yTe Alloys

Juan Li et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

Article Chemistry, Physical

Low-Symmetry Rhombohedral GeTe Thermoelectrics

Juan Li et al.

JOULE (2018)

Article Chemistry, Physical

Realizing the High Thermoelectric Performance of GeTe by Sb-Doping and Se-Alloying

Juan Li et al.

CHEMISTRY OF MATERIALS (2017)

Article Materials Science, Multidisciplinary

Resonant level-induced high thermoelectric response in indium-doped GeTe

Lihua Wu et al.

NPG ASIA MATERIALS (2017)

Article Materials Science, Multidisciplinary

Electronic origin of the high thermoelectric performance of GeTe among the p-type group IV monotellurides

Juan Li et al.

NPG ASIA MATERIALS (2017)

Article Chemistry, Physical

Substitutional defects enhancing thermoelectric CuGaTe2

Jiawen Shen et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

Article Chemistry, Physical

Effective mass and Fermi surface complexity factor from ab initio band structure calculations

Zachary M. Gibbs et al.

NPJ COMPUTATIONAL MATERIALS (2017)

Article Materials Science, Multidisciplinary

Manipulation of charge transport in thermoelectrics

Xinyue Zhang et al.

NPJ QUANTUM MATERIALS (2017)

Article Chemistry, Multidisciplinary

Multijunction Si photocathodes with tunable photovoltages from 2.0 V to 2.8 V for light induced water splitting

Felix Urbain et al.

ENERGY & ENVIRONMENTAL SCIENCE (2016)

Article Nanoscience & Nanotechnology

Interstitial Point Defect Scattering Contributing to High Thermoelectric Performance in SnTe

Yanzhong Pei et al.

ADVANCED ELECTRONIC MATERIALS (2016)

Article Materials Science, Multidisciplinary

Herringbone structure in GeTe-based thermoelectric materials

Ho Seong Lee et al.

ACTA MATERIALIA (2015)

Article Chemistry, Physical

High Thermoelectric Performance and Enhanced Mechanical Stability of p-type Ge1-xSbxTe

Suresh Perunnal et al.

CHEMISTRY OF MATERIALS (2015)

Article Nanoscience & Nanotechnology

Effective Electronic Mechanisms for Optimizing the Thermoelectric Properties of GeTe-Rich Alloys

Eden Hazan et al.

ADVANCED ELECTRONIC MATERIALS (2015)

Article Multidisciplinary Sciences

Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals

Li-Dong Zhao et al.

NATURE (2014)

Article Multidisciplinary Sciences

High thermoelectric performance by resonant dopant indium in nanostructured SnTe

Qian Zhang et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2013)

Review Chemistry, Multidisciplinary

Resonant levels in bulk thermoelectric semiconductors

Joseph P. Heremans et al.

ENERGY & ENVIRONMENTAL SCIENCE (2012)

Article Chemistry, Multidisciplinary

Study of the Thermoelectric Properties of Lead Selenide Doped with Boron, Gallium, Indium, or Thallium

Qian Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)