SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties

Xie, Lin1,2; He, Dongsheng1,2; He, Jiaqing1,2,3,4

2021-03-01

10.1039/d1mh00091h

Materials Horizons   影响因子和分区

2051-6347

2051-6355

Thermoelectric (TE) materials, which enable direct energy conversion between waste heat and electricity, have witnessed enormous and exciting developments over last several decades due to innovative breakthroughs both in materials and the synergistic optimization of structures and properties. Among the promising state-of-the-art materials for next-generation thermoelectrics, tin selenide (SnSe) has attracted rapidly growing research interest for its high TE performance and the intrinsic layered structure that leads to strong anisotropy. Moreover, complex interactions between lattice, charge, and orbital degrees of freedom in SnSe make up a large phase space for the optimization of its TE properties via the simultaneous tuning of structural and chemical features. Various techniques, especially advanced electron microscopy (AEM), have been devoted to exploring these critical multidiscipline correlations between TE properties and microstructures. In this review, we first focus on the intrinsic layered structure as well as the extrinsic structural "imperfectness" of various dimensions in SnSe as studied by AEM. Based on these characterization results, we give a comprehensive discussion on the current understanding of the structure-property relationship. We then point out the challenges and opportunities as provided by modern AEM techniques toward a deeper knowledge of SnSe based on electronic structures and lattice dynamics at the nanometer or even atomic scale, for example, the measurements of local charge and electric field distribution, phonon vibrations, bandgap, valence state, temperature, and resultant TE effects.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[11934007,11874194,51632005] ; Natural Science Foundation of Guangdong Province[2015A030308001] ; Leading Talents of Guangdong Province Program[00201517] ; Science and Technology Innovation Committee Foundation of Shenzhen["JCYJ20190809145205497","KQTD2016022619565991"]

Chemistry ; Materials Science

Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary

WOS:000632018300001

ROYAL SOC CHEMISTRY

20212810613228

Degrees of freedom (mechanics) ; Electric fields ; Electronic structure ; Lattice vibrations ; Layered semiconductors ; Phase space methods ; Selenium compounds ; Structural optimization ; Structural properties ; Thermoelectric energy conversion ; Vibrations (mechanical) ; Waste heat

Structural Design:408 ; Energy Losses (industrial and residential):525.4 ; Thermoelectric Energy:615.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Mathematics:921 ; Optimization Techniques:921.5 ; Mechanics:931.1 ; Crystal Lattice:933.1.1 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Key Lab Thermoelect Mat, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Key Lab Energy Convers & Storage Technol, Minist Educ, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Phaton Therma, Shenzhen 518055, Peoples R China

Xie, Lin,He, Dongsheng,He, Jiaqing. SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties[J]. Materials Horizons,2021,8:1847-1865.

Xie, Lin,He, Dongsheng,&He, Jiaqing.(2021).SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties.Materials Horizons,8,1847-1865.

Xie, Lin,et al."SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties".Materials Horizons 8(2021):1847-1865.