Realizing high performance n-type PbTe by synergistically optimizing effective mass and carrier mobility and suppressing bipolar thermal conductivity
Literature Information
Yu Xiao, Haijun Wu, Dongyang Wang, Liangwei Fu, Yang Zhang, Yue Chen, Jiaqing He, Stephen J. Pennycook, Li-Dong Zhao
Thermoelectric materials enable direct inter-conversion between electrical energy and thermal energy. The conversion efficiency is limited by their complex interdependent thermoelectric parameters. Here, we report that the electrical and thermal transport properties of n-type PbTe can be simultaneously improved by introducing just one component, MnTe. We obtained a maximum ZT of ∼1.6 at 773 K and an average ZTave of >1.0 at 300–873 K in n-type MnTe alloyed PbTe. This remarkably enhanced performance arises from the triple functions of MnTe alloying: (1) making the conduction band flatter to increase the effective mass from 0.31 me to 0.45 me; (2) enlarging the band gap of PbTe to suppress the bipolar thermal conductivity; and (3) introducing point defects instead of nanoprecipitates to reduce the lattice thermal conductivity while maintaining a relatively high carrier mobility. Our results indicate that high performance can be achieved in n-type PbTe by integrating different but synergistic concepts.
Recommended Journals
Related Literature
A time-resolved photoelectron imaging study on isolated tolane: observation of the biradicalic 1Au state
Marco Flock, Lea Bosse, Dustin Kaiser, Bernd Engels, Ingo Fischer
DOI: 10.1039/C9CP02222H
X-ray radiation-induced amorphization of metal–organic frameworks
Remo N. Widmer, Giulio I. Lampronti, Nicola Casati, Stefan Farsang, Thomas D. Bennett, Simon A. T. Redfern
DOI: 10.1039/C9CP01463B
Judging the feasibility of TiO2 as photocatalyst for chemical energy conversion by quantitative reactivity determinants
Martin Dilla, Nikolaos G. Moustakas, Ahmet E. Becerikli, Tim Peppel, Armin Springer, Jennifer Strunk, Simon Ristig
DOI: 10.1039/C9CP00981G
Comparative study of the crowding-induced collapse effect in hard-sphere, flexible polymer and rod-like polymer systems
Anpu Chen, Nanrong Zhao
DOI: 10.1039/C9CP01731C
Oxygen transport and surface exchange mechanisms in LSCrF–ScCeSZ dual-phase ceramics
Zonghao Shen, Stephen J. Skinner, John A. Kilner
DOI: 10.1039/C9CP02175B
In situ, operando studies on the size and structure of supported Pt catalysts under supercritical conditions by simultaneous synchrotron-based X-ray techniques
Sungwon Lee, Sungsik Lee, Duygu Gerceker, Mrunmayi D. Kumbhalkar, Kamila M. Wiaderek, Madelyn R. Ball, Manos Mavrikakis, James A. Dumesic, Randall E. Winans
DOI: 10.1039/C9CP00347A
Modulating the electronic structures of blue phosphorene towards spintronics
Xiang-Qian Lu, Chuan-Kui Wang, Xiao-Xiao Fu
DOI: 10.1039/C9CP01684H
The performance of adsorption, dissociation and diffusion mechanism of hydrogen on the Ti-doped ZrCo(110) surface
Qingqing Wang, Xianggang Kong, Huilei Han, Ge Sang, Guanghui Zhang, Tao Gao
DOI: 10.1039/C9CP02491C
Lattice defect-formulated ferromagnetism and UV photo-response in pure and Nd, Sm substituted ZnO thin films
Navdeep Goyal, R. K. Kotnala
DOI: 10.1039/C9CP02285F
High bond difference parameter-induced low thermal transmission in carbon allotropes with sp2 and sp3 hybridization
Shenghong Ju, Bin Wen, Yuwen Zhang, Roderick Melnik
DOI: 10.1039/C9CP01029G
You might also like
What are the main uses of 1H-Indazole-6-carbonitrile (CAS: 141290-59-7)?
1H-Indazole-6-carbonitrile finds applications in pharmaceuticals, where it serve...
How should waste containing Dioctyl (2E)-2-butenedioate (CAS: 2997-85-5) be handled?
Waste containing Dioctyl (2E)-2-butenedioate (CAS: 2997-85-5) should be collecte...
What industries use Sodium [(1,2-benzoxazol-3-ylmethyl)sulfonyl]azanide (CAS: 68291-98-5)?
Sodium [(1,2-benzoxazol-3-ylmethyl)sulfonyl]azanide is primarily used in pharmac...
Are there alternatives to Dimethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,6-pyridinedicarboxylate (CAS: 741709-66-0) in synthesis?
Dimethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,6-pyridinedicarboxyla...
How should waste containing 2-Fluoro-6-hydrazinopyridine (CAS: 80714-39-2) be handled?
Waste containing 2-Fluoro-6-hydrazinopyridine (CAS: 80714-39-2) should be manage...
What is 6-Formyl-2-pyridinecarboxylic acid (CAS: 499214-11-8)?
6-Formyl-2-pyridinecarboxylic acid is an organic compound with the molecular for...
What is the market or research trend for 3-(3,4-dimethoxyphenyl)-2,5-dimethyl-N-(2-morpholin-4-ylethyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS: 900874-91-1)?
Research trends for this compound indicate a focus on its potential applications...
How is 9H-Tribenzo[b,d,f]azepine (CAS: 29875-73-8) typically synthesized?
9H-Tribenzo[b,d,f]azepine is typically synthesized via a multi-step process invo...
How is 1-Cyclopropyl-7-ethoxy-6-fluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid (CAS: 1797982-51-4) typically synthesized?
1-Cyclopropyl-7-ethoxy-6-fluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxyli...
How should waste containing Methyl 3-oxo-1,2,3,4-tetrahydro-6-quinoxalinecarboxylate (CAS: 671820-52-3) be handled?
Waste containing Methyl 3-oxo-1,2,3,4-tetrahydro-6-quinoxalinecarboxylate (CAS: ...
Source Journal
Energy & Environmental Science

Energy & Environmental Science is an international journal dedicated to publishing exceptionally important and high quality, agenda-setting research tackling the key global and societal challenges of ensuring the provision of energy and protecting our environment for the future. The scope is intentionally broad and the journal recognises the complexity of issues and challenges relating to energy conversion and storage, alternative fuel technologies and environmental science. For work to be published it must be linked to the energy-environment nexus and be of significant general interest to our community-spanning readership. All scales of studies and analysis, from impactful fundamental advances, to interdisciplinary research across the (bio)chemical, (bio/geo)physical sciences and chemical engineering disciplines are welcomed. Topics include, but are not limited to, the following: Solar energy conversion and photovoltaics Solar fuels and artificial photosynthesis Fuel cells Hydrogen storage and (bio) hydrogen production Materials for energy systems Capture, storage and fate of CO2, including chemicals and fuels from CO2 Catalysis for a variety of feedstocks (for example, oil, gas, coal, biomass and synthesis gas) Biofuels and biorefineries Materials in extreme environments Environmental impacts of energy technologies Global atmospheric chemistry and climate change as related to energy systems Water-energy nexus Energy systems and networks Globally applicable principles of energy policy and techno-economics














