气候变化领域集成服务门户(CCPortal): Computer-aided design of high-efficiency GeTe-based thermoelectric devices

CCPortal

DOI	10.1039/d0ee01004a
	Computer-aided design of high-efficiency GeTe-based thermoelectric devices
	Hong M.; Hong M.; Zheng K.; Lyv W.; Li M.; Qu X.; Sun Q.; Xu S.; Zou J.; Zou J.; Chen Z.-G.; Chen Z.-G.
发表日期	2020
ISSN	1754-5692
起始页码	1856
结束页码	1864
卷号	13 期号:6
英文摘要	Driven by materials science development, the thermoelectric performance has been enhanced. However, only increasing the figure of merit to enhance the thermoelectric efficiency becomes more challenging. Here, we combine an enhanced figure of merit and geometry optimization of a device by computer-aided design to achieve a record-high thermoelectric efficiency of 16%. A figure of merit over 2.2 in p-type Ge1-x-yCrxSbyTe alloys is achieved resulting from the convergence of three valence edges induced by Cr doping to enhance the power factor and superlattice precipitates to lower the thermal conductivity. Using finite element analysis simulations, we optimize the geometry of a segmented thermoelectric device made of the as-developed Ge1-x-yCrxSbyTe and other reported materials, leading to a record high efficiency. Furthermore, our simulations on over 70 existing n-type thermoelectric materials can serve as a library to bridge the gap between materials science and device engineering to achieve high-efficiency thermoelectric devices. © The Royal Society of Chemistry.
语种	英语
scopus关键词	Bridges; Computer control; Germanium compounds; Thermoelectricity; Device engineering; Environmental science; Geometry optimization; Science development; Thermo-Electric materials; Thermoelectric devices; Thermoelectric efficiency; Thermoelectric performance; Computer aided design
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162503
作者单位	Centre for Future Materials, University of Southern Queensland, Springfield, QLD 4300, Australia; School of Mechanical and Mining Engineering, University of Queensland, Brisbane, QLD 4072, Australia; Beijing Key Lab of Microstructure and Property of Solids, Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, China; Centre for Microscopy and Microanalysis, University of Queensland, Brisbane, QLD 4072, Australia
推荐引用方式 GB/T 7714	Hong M.,Hong M.,Zheng K.,et al. Computer-aided design of high-efficiency GeTe-based thermoelectric devices[J],2020,13(6).
APA	Hong M..,Hong M..,Zheng K..,Lyv W..,Li M..,...&Chen Z.-G..(2020).Computer-aided design of high-efficiency GeTe-based thermoelectric devices.Energy and Environmental Science,13(6).
MLA	Hong M.,et al."Computer-aided design of high-efficiency GeTe-based thermoelectric devices".Energy and Environmental Science 13.6(2020).