A5056219675- Advanced Thermoelectric Materials and Devices
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- 2D Materials and Applications
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Topological Materials and Phenomena
- Perovskite Materials and Applications
- Advanced Fiber Optic Sensors
- Gas Sensing Nanomaterials and Sensors
- Machine Learning in Materials Science
- Crystal Structures and Properties
- Advanced Thermodynamics and Statistical Mechanics
- Nanowire Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Physics of Superconductivity and Magnetism
- Phase-change materials and chalcogenides
- Magnetic and transport properties of perovskites and related materials
- Thin-Film Transistor Technologies
- Luminescence Properties of Advanced Materials
- Atrial Fibrillation Management and Outcomes
- Iron-based superconductors research
- Polymer Surface Interaction Studies
Northwestern University
2014-2025
Lanzhou Jiaotong University
2025
Nanjing Forestry University
2025
Yanshan University
2024
Beihang University
2024
Zhaotong University
2024
Nanjing University of Aeronautics and Astronautics
2024
Institute of Physics
2014-2024
Yunnan University
2024
Argonne National Laboratory
2023
Abstract The applications of mixed ionic–electronic conductors are limited due to phase instability under a high direct current and large temperature difference. Here, it is shown that Cu 2 Se stabilized through regulating the behaviors + ions electrons in Schottky heterojunction between host matrix in‐situ‐formed BiCuSeO nanoparticles. accumulation via an ionic capacitive effect at junction modifies space‐charge distribution electric double layer, which blocks long‐range migration produces...
We report a general solid-phase synthesis strategy for novel class of DNA block copolymer amphiphiles. The assembled spherical micelle structures exhibit recognition properties defined by their sequences and can be used to build higher-ordered through hybridization with materials that possess complementary DNA. This work is an important step toward creating modified act as phase transfer agents carriers nanovesicles.
Thermoelectric (TE) generators enable the direct and reversible conversion between heat electricity, providing applications in both refrigeration power generation. In last decade, several TE materials with relatively high figures of merit (zT) have been reported low- high-temperature regimes. However, there is an urgent demand for high-performance working mid-temperature range (400-700 K). Herein, p-type AgSbTe2 stabilized S Se co-doping are demonstrated to exhibit outstanding maximum figure...
Typically, conventional structure transitions occur from a low symmetry state to higher upon warming. In this work, an unexpected local breaking in the tetragonal diamondoid compound AgGaTe2 is reported, which, warming, evolves continuously undistorted ground locally distorted while retaining average crystallographic symmetry. This rare phenomenon previously referred as emphanisis. state, caused by weak sd3 orbital hybridization of tetrahedral Ag atoms, causes their displacement off...
The understanding of thermoelectric properties ternary I-III-VI2 type (I = Cu, Ag; III Ga, In; and VI Te) chalcopyrites is less well developed. Although their thermal transport are relatively studied, the relationship between electronic band structure charge has been rarely discussed. In this study, we reveal unusual dynamic doping effect that could underpin promising Cu1-xAgxGaTe2 compounds. Density functional theory (DFT) calculations measurements suggest compounds possess an non-parabolic...
The class I-III-VI2 diamondoid compounds with tetrahedral bonding are important semiconductors widely applied in optoelectronics. Understanding their heat transport properties and developing an effective method to predict the solid solutions' thermal conductivity will help assess impact as thermoelectrics. In this work, we investigated detail of CuGa1-xInxTe2 Cu1-xAgxGaTe2 found that Ag-alloyed solutions, Ag atom off-centering effect results crystallographic distortion extra strong...
Entropy-engineered materials are garnering considerable attention owing to their excellent mechanical and transport properties, such as high thermoelectric performance. However, understanding the effect of entropy on thermoelectrics remains a challenge. In this study, we used PbGeSnCdxTe3+x family model system systematically investigate impact engineering its crystal structure, microstructure evolution, behavior. We observed that PbGeSnTe3 crystallizes in rhombohedral structure at room...
Abstract Mousedouble minute 2 (MDM2) is one of the molecules activated by p53 and plays an important role in regulation p53. MDM2 generally believed to function as a negative regulator facilitating its ubiquitination subsequent degradation. Consequently, blocked activity often fails damaged cells undergo cell cycle arrest or apoptosis. Given that around 50% human cancers involve inactivation through genetic mutations, directly targeting drug development has limited feasibility, molecular...
GeSe, an analogue of SnSe, shows promise in exhibiting exceptional thermoelectric performance the Pnma phase. The constraints on its dopability, however, pose challenges attaining optimal carrier concentrations and improving ZT values. This study demonstrates a crystal structure evolution strategy for achieving highly doped samples promising ZTs GeSe via LiBiTe2 alloying. A rhombohedral phase (R3m) can be stabilized GeSe-LiBiTe2 system, further evolving into cubic (Fm3̅m) with rising...
Dynamic control over the nano-, micro, and macroscopic architectures of materials can be achieved by using living fungi templates for assembly DNA-functionalized Au nanoparticles into ordered structures (see scheme). After one type particle, a second particle assembled along growing direction hyphae simply changing culture solution. Supporting information this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2003/z51231_s.pdf or from author. Please note: The...
Defect engineering is the core strategy for improving thermoelectric properties. Herein, cation doping along with modulation of vacancy has been developed in GeTe-based materials as an effective method to induce vacancy-based defects boost their performance. A series ternary compounds Ge9Sb2Te12-x (x = 0, 0.03, 0.06, 0.09, 0.12, 0.15) was prepared by vacuum-melting and annealing combined spark plasma sintering (SPS) process. The role Sb on properties systematically investigated. It found...
The manipulation of individual intrinsic point defects is crucial for boosting the thermoelectric performances n-Bi2Te3-based films, but was not achieved in previous studies. In this work, we realize independent Te vacancies VTe and antisite TeBi BiTe molecular beam epitaxially grown n-Bi2Te3 which directly monitored by a scanning tunneling microscope. By virtue introducing dominant antisites, film can achieve state-of-the-art power factor 5.05 mW m–1 K–2, significantly superior to films...
SnS2, an earth-abundant and ecofriendly material, is limited as a thermoelectric material because of the high lattice thermal conductivity κL low carrier mobility μ. By introducing weak-bonding elements Ba or Sr into SnS2 framework, we discovered two SnS2-based materials BaSnS3 SrSnS3 with calculated values 0.15 0.17 W m–1 K–1, respectively, along a-axis. The group velocity anharmonicity originating from weakened distorted Sn–S bonding network are found in both systems. Moreover, vibrations...
The recently discovered plastic/ductile inorganic thermoelectric (TE) materials open a new avenue for the fabrication of high-efficiently flexible TE devices, which can utilize small temperature difference between human body and environment to generate electricity. However, maximum power factor (PF) current is usually around or less than 10 µW cm
Abstract Although tip‐enhanced tribo‐tunneling in metal/semiconductor point nanocontact is capable of producing DC with high current density, scaling up the process for power harvesting practical applications challenging due to complexity tip array fabrication and insufficient voltage output. Here, it demonstrated that mechanical contact between a carbon aerogel silicon (SiO 2 /Si) interface naturally forms multiple nanocontacts generation an open‐circuit output ( V OC ) reaching V,...
Acoustic phonons with long mean free paths have been believed to control the lattice thermal conductivity ${\ensuremath{\kappa}}_{\mathrm{L}}$ in solids dominantly. In this study, however, we demonstrate an optical phonon dominated ${\mathrm{BaSnS}}_{2}$. By solving Peierls-Boltzmann transport equation, predict a low diagonal ${\ensuremath{\kappa}}_{\mathrm{L}}(\mathrm{D})$ of...
Although defect engineering is the core strategy to improve thermoelectric properties, there are limited methods effectively modulate designed defects. Herein, we demonstrate that a high ZT value of 1.36 at 775 K and average 0.99 in temperature range from 300 825 realized Zn-containing PbTe by designing complex By combining first-principles calculations experiments, show Zn atoms occupy both Pb sites interstitial couple with each other. The contraction stress induced via substitutional on...
Dy 3+ ,Tm co-doped K 3 Y(PO 4 ) 2 phosphors with high efficiency energy transfer can achieve color-tunable luminescence and have potential application prospects in the fields of optical temperature measurement white LED lighting.