Full Thermoelectric Characterization of Stoichiometric Electrodeposited Thin Film Tin Selenide (SnSe) ‌ ‌ Browse. They thermally evaporated a tin selenide powder source inside an evacuated quartz tube. While it is known that nanostructuring offers the prospect of enhanced thermoelectric performance, there have been … If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. Single crystal tin selenide (SnSe) is already known to be a semiconductor and an ideal thermoelectric material, but researchers at Case Western Reserve University have now said the graphenelike layered crystal structure of SnSe has the potential to be fabricated in nanostructure forms. When a team of researchers from Case Western Reserve University in Cleveland, Ohio, saw the graphene-like layered crystal structure of SnSe, they had one of those mystic "aha!" An international team led by Dr. Ulrich Schade at the HZB has now comprehensively examined samples of tin selenide with the aid of infrared spectroscopy at BESSY II and hard X-rays at PETRA IV. This is the highest value reported to date. Tin selenide (SnSe) has attracted much attention in the thermoelectric community since the discovery of the record figure of merit (ZT) of 2.6 in single crystal tin sele "The silver-doped SnSe nanostructured thin film holds promise for a high figure of merit.". When a group of researchers from Case Western Reserve University in Cleveland, Ohio, saw the graphenelike layered crystal structure of SnSe, they had one of those magical "aha!" The thermoelectric effect has been known since 1821: with certain combinations of materials, a temperature difference generates an electric current. However, the thermoelectric effect in most materials is extremely small. Many studies were conducted on thermoelectric materials such as Bismuth Telluride and Lead Telluride. Tin selenide might considerably exceed the efficiency of current record holding thermoelectric materials made of bismuth telluride. In this work, n-type polycrystalline SnSe 0.95 doped with a new dopant NbCl 5 was prepared using vacuum melting and hot-pressing (HP) methods, which resulted in a textured microstructure and anisotropic thermoelectric performance. … Thermoelectric Tin Selenide: The Beauty of Simplicity Thermoelectric Tin Selenide: The Beauty of Simplicity Zhang, Hao; Talapin, Dmitri V. 2016-01-25 00:00:00 Solid‐state thermoelectric (TE) modules can couple heat flow and electric current. Single crystal tin selenide (SnSe) is a semiconductor and an ideal thermoelectric material; it can directly convert waste heat to electrical energy or be used for cooling. Thank you for taking your time to send in your valued opinion to Science X editors. This is an enormous efficiency and considerably exceeds the value for bismuth telluride. This is the highest value reported to date. SnSe undergoes a phase transition of second order at 500°C with an increase of the crystal symmetry from space group Pnma (left) to Cmcm (right). Researchers find tin selenide shows promise for efficiently converting waste heat into electrical energy, Rubber tree plant leaves found to grow slippery to ward off insects as plant ages, Acoustofluidic centrifuge for nanoparticle enrichment and assortment, Bound-charge engineering: A new strategy to develop nanowire transistors, Eight-year periodicity of train millipede confirmed, Liars found to coordinate body movements with the person they are lying to, The Simulation Theory and the dangers of pop-science, The sources of error in a diffraction grating experiment, Spectrum of laser light absorbed and re-emitted by a white object. A thermoelectric figure of merit, ZT, indicates how efficiently a material converts thermal energy to electrical energy. Medical research advances and health news, The latest engineering, electronics and technology advances, The most comprehensive sci-tech news coverage on the web. The information you enter will appear in your e-mail message and is not retained by Phys.org in any form. US10002998B2 - Tin selenide single crystals for thermoelectric applications - Google Patents Tin selenide single crystals for thermoelectric applications Download PDF Info Publication number US10002998B2. Eco-friendly tin sulfide (SnS) has attracted increasing attention in the thermoelectric community because of its elemental abundance and analogous crystal structure to SnSe as a new thermoelectric material. Image: SPECIFIC – Swansea University . Tin selenide (SnSe) is a narrow band gap semiconductor comprised of environmentally friendly and earth abundant elements. Y. Zhang et al., “Tin selenide molecular precursor for the solution processing of thermoelectric materials and devices,” ACS Applied Materials and Interfaces, vol. Tin and selenium atoms react on a silicon or mica growth wafer placed at the low-temperature zone of the quartz tube. The sulfide version is not quite as good a thermoelectric yet, but it is being optimized further because it is cheaper to produce and more environmentally friendly. In this work, we find that the extension of a low-temperature phase with a low-symmetry lattice structure, which has excellent elec At 500 degrees Celsius, the layers start to self-organise and the heat conduction decreases, while charge carriers remain mobile. Tin(II) selenide has demonstrated the ability to convert waste heat into electrical energy. It is good that TE properties were reported in single crystal form because polycrystalline SnSe exhibits low electrical conductivity compared to that of single crystal SnSe. This causes SnSe nanoflakes to form on the surface of the wafer. Login ‌ ‌ Statistics. Show simple item record. "Thin Film Tin Selenide (SnSe) Thermoelectric Generators Exhibiting Ultralow Thermal Conductivity." This is the peer reviewed version of the following article: R., B. M., et al. There have been many reports since of the thermoelectric characterization of SnSe synthesized or manufactured by several methods, but so far none of these have concerned the electrodeposition of SnSe. The crystal structure of the thermoelectric material tin selenide has been investigated with angle-dispersive synchrotron x-ray powder diffraction under hydrostatic pressure up to 27 GPa. You can be assured our editors closely monitor every feedback sent and will take appropriate actions. DNA usually forms the classic double helix shape of…, In experiments in mouse tissues and human cells, Johns Hopkins Medicine researchers say they have found that removing a membrane that lines the back of the eye may improve the…, By continuing to use the site, you agree to the use of cookies. SnSe has exhibited the highest thermoelectric material efficiency, measured by the unitless ZT parameter, of any known material (~2.62 at 923 K along the b axis and ~2.3 along the c axis). Thermoelectric conversion is a promising route to convert heat into electricity. document.getElementById("comment").setAttribute( "id", "aecc1cfcaa922560838829936a552319" );document.getElementById("cfb914e280").setAttribute( "id", "comment" ); Wireless power transfers in the ocean For drones that can be stationed underwater for the adoption of ICT in mariculture. The VSCF approach to investigating anharmonicity is here applied to the study of tin selenide (SnSe), a material that has recently been shown to demonstrate consider- able promise as a thermoelectric material. However, heat conduction and electrical conductivity are almost always closely associated. It has also emerged as a highly promising thermoelectric material over the last 4 years [4]. Patent Analysis of Tin selenide single crystals for thermoelectric applications Updated Time 12 June 2019 Patent Registration Data Indeed tin selenide has been hailed as ‘the worlds best’ thermoelectric material due to its unique crystal structure. In 2014, researchers at Northwestern University discovered that tin selenide (SnSe) has a ZT of 2.6 along the b axis of the unit cell. Keywords. Tin selenide thin films were successfully deposited by the spray pyrolysis technique using tin (II) chloride and selenourea as a precursor compound at the substrate temperature range of 250 °C to 400 °C, in order to study the effect of these parameters on structural, optical and thermoelectric … This is because to achieve a large thermoelectric effect, heat conduction must be poor, whereas electrical conductivity must be high. In addition, tin and selenium are abundant. However, it was thought its efficiency became enormous only at temperatures above 500 degrees Celsius. Tin(II) selenide may be soon used in energy harvesting. Single crystal tin selenide (SnSe) is a semiconductor and an ideal thermoelectric material; it can directly convert waste heat to electrical energy or be used for cooling. The efficiency of the thermoelectric effect in this crystallographic orientation of tin selenide has not been exceeded by any other material to date. Abstract. With increasing pressure, a continuous evolution of the crystal structure from the GeS type to the higher-symmetry TlI type was observed, with a critical pressure of 10.5(3) GPa. 0 items; Your Account; Log Out; Login; English; Cymraeg Tin is often part of complex multi-component materials developed to convert heat energy, especially waste heat, into useful electricity, known as thermoelectric materials. An international team led by Dr. Ulrich Schade at the HZB has now comprehensively examined samples of tin selenide with the aid of infrared spectroscopy at BESSY II and hard X-rays at PETRA IV. Your feedback will go directly to Science X editors. 27104–27111, 2020. Thermoelectric materials show the thermoelectric effect in a strong or convenient form. The group's work centers on the thermoelectric effect. WASHINGTON, D.C. -- Single crystal tin selenide (SnSe) is a semiconductor and an ideal thermoelectric material; it can directly convert waste heat to electrical energy or be used for cooling. It is good that TE properties were reported in single crystal form because polycrystalline SnSe exhibits low electrical conductivity compared to that of single crystal SnSe. High-efficiency thermoelectric materials: New insights into tin selenide SnSe is a highly layered orthorhombic structure. In this process, phase transition may induce an unexpected consequence under certain conditions. Tin selenide (SnSe) has attracted much attention in the thermoelectric community since the discovery of the record figure of merit (ZT) of 2.6 in single crystal tin selenide in 2014. You can unsubscribe at any time and we'll never share your details to third parties. SnSe is a highly layered orthorhombic structure. "Applying a voltage on a thermoelectric material can also lead to a temperature gradient, which means you can use thermoelectric materials for cooling," said Gao. Click here to sign in with However, so far no high dimensionless thermoelectric figure of merit ZT > 1 was reported in SnS polycrystals. Bismuth telluride is one of the best thermoelectric materials known to date. A team from the SPECIFIC Innovation and Knowledge Centre at Swansea University has used additive manufacturing techniques to make a thermoelectric device which it claims has an efficiency factor 50 per cent higher than the previous best for printed materials. 24, pp. 12, no. Here, we report a record high ZT dev ∼1.34, with ZT ranging from 0.7 to 2.0 at 300 to 773 kelvin, realized in hole-doped tin selenide (SnSe) crystals. and Terms of Use. Now measurements at the BESSY II and PETRA IV synchrotron sources show that tin selenide can also be utilised as a thermoelectric material at room temperature – so long as high pressure is applied. Key aspects here are biological and medical issues, which play an increasingly important role in this field. They thermally evaporated a tin selenide powder source inside an evacuated quartz tube. Toggle navigation Swansea University's Research Repository. Here, we report a remarkable high-average figure of merit (ZT) of 0.73 with the peak ZT of 1.9 in bulk polycrystalline tin selenide (SnSe), generating a high energy conversion efficiency of ∼12.5%. The record ZT is attributed to an ultralow thermal conductivity that arises from anharmonicity in bonding. In 2014, researchers at Northwestern University discovered that tin selenide (SnSe) has a ZT of 2.6 along the b axis of the unit cell. In practice, however, polycrystalline SnS performs rather poorly as a result of its low power factor. Our findings show that printed thermoelectric materials using tin selenide are a very promising way forward. US10002998B2 US14/823,738 US201514823738A US10002998B2 US 10002998 B2 US10002998 B2 US 10002998B2 US 201514823738 A US201514823738 A US 201514823738A US … Thermoelectric technology converts thermal energy to electricity. Single crystal tin selenide (SnSe) is a semiconductor and an ideal thermoelectric material; it can directly convert waste heat to electrical energy or be used for cooling. This document is subject to copyright. Tin (II) selenide has demonstrated the ability to convert waste heat into electrical energy. Tin selenide (SnSe) has attracted much attention in the field of thermoelectrics since the discovery of the record figure of merit (ZT) of 2.6 ± 0.3 along the b-axis of the material. At the start, "the nanostructure SnSe thin films we fabricated had a power factor of only ~5 percent of that of single crystal SnSe at room temperature," said Shuhao Liu, an author on the paper. Adding a dopant element like silver to SnSe thin films during material synthesis can further optimize its thermoelectric properties. In this work, stoichiometric … This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties. Single crystal tin selenide (SnSe) is a perfect thermoelectric material and a semiconductor; it can instantly change waste heat to electrical energy or be used for cooling. Tin selenide single crystals for thermoelectric applications.United States: N. p., 2018. Apart from any fair dealing for the purpose of private study or research, no Tin is often part of complex multi-component materials developed to convert heat energy, especially waste heat, into useful electricity, known as thermoelectric materials. They study how the temperature difference in a material can cause charge carriers—electrons or holes—to redistribute and generate a voltage across the material, converting thermal energy into electricity. Tin selenide (SnSe) has attracted much attention in the field of thermoelectrics since the discovery of the record figure of merit (ZT) of 2.6 ± 0.3 along the b‐axis of the material. In this work, we find that the extension of a low-temperature phase with a low-symmetry lattice structure, which has excellent elec The efficiency of the thermoelectric effect in this crystallographic orientation of tin selenide has not been exceeded by any other material to date. ABSTRACT: Tin selenide (SnSe) has attracted much attention in the thermoelectric community since the discovery of the record figure of merit (ZT) of 2.6 in single crystal tin selenide in 2014. Tin selenide (SnSe), which has high thermoelectric (TE) performance due to its low thermal conductivity, is considered as a promising TE material. Single crystal tin selenide (SnSe) is a perfect thermoelectric material and a semiconductor; it can instantly change waste heat to electrical energy or be used for cooling. Materials management deals with the research, development, manufacturing and processing of raw and industrial materials. Your opinions are important to us. Antonia Roetgerantonia.roetger@helmholtz-berlin.de, All news from this category: Materials Sciences. For this reason, the search for thermoelectric materials concentrates on compounds with special crystalline structures such as bismuth telluride (Bi2Te3). This nanosheet network causes the ultralow thermal conductivity of tin selenide (SnSe) to be reduced to around a third of single crystal values. “We are able to explain with our data and our calculations why tin selenide is such an outstanding thermoelectric material over a wide temperature and pressure range”, says Schade. Printing Tin Selenide to turn waste heat into electrical power. SnSe has recently proven to be an extraordinarily promising thermoelectric material with intrinsically ultra-low lattice thermal conductivity and a record figure of merit up to 2.6 at a higher temperature (813K). flashes. Tin Selenide Molecular Precursor for the Solution Processing of Thermoelectric Materials and Devices. The electronic properties also change from semiconducting to semi-metallic in the high-temperature structure. Tin(II) selenide may be soon used in energy harvesting. While it is known When a group of researchers from Case Western Reserve University in Cleveland, Ohio, saw the graphenelike layered crystal structure of SnSe, they had one of those magical “aha!” moments. Science X Daily and the Weekly Email Newsletter are free features that allow you to receive your favorite sci-tech news updates in your email inbox. Single crystal tin selenide is a semiconductor and an ideal thermoelectric material; it can directly convert waste heat to electrical energy or be used for cooling. By using our site, you acknowledge that you have read and understand our Privacy Policy High pressure works. But, after trying a variety of dopants to improve the material's power factor, they determined that "silver was the most effective—resulting in a 300 percent power factor improvement compared to undoped samples," Liu said. Tin and selenium atoms react on a silicon or mica growth wafer placed at the low-temperature zone of the quartz tube. more information Accept. Tin(II) selenide has demonstrated the ability to convert waste heat into electrical energy. So the search continues for suitable thermoelectric materials among more abundant non-toxic elements. This approach offers a viable route for power generation from different sources of waste heat, such as car exhausts and industrial plants. Then tin selenide might become an economical and readily available alternative to bismuth telluride. In recent years tin selenide (SnSe) and copper selenide (Cu 2 Se) are of special interest because of their very high values of ZT [7, 18]. In this thesis, the effects of the anharmonic nuclear motion on the vibrational and electronic properties of SnSe are investigated quantitatively. Tin selenide might considerably exceed the efficiency of current record holding thermoelectric materials made of bismuth telluride. In the future, the researcher hope that SnSe nanostructures and thin films may be useful for miniaturized, environmentally friendly, low-cost thermoelectric and cooling devices. However, both bismuth and tellurium are rare elements, which limit their large-scale use. Credit: HZB. Get weekly and/or daily updates delivered to your inbox. Now measurements at the BESSY II and PETRA IV synchrotron sources show that tin selenide can also be utilised as a thermoelectric material … The record ZT is attributed to an ultralow thermal conductivity that arises from anharmonicity in bonding. "Our lab has been working on two-dimensional semiconductors with layered structures similar to graphene," said Xuan Gao, an associate professor at Case Western. Study its thermoelectric properties dimensionless thermoelectric figure of merit. `` surface area which opens the possibility using! 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Read and understand our Privacy Policy and Terms of use selenide has been published final. This site uses cookies to assist with navigation, analyse your use of our services, and provide from. Issue date Authors Titles Subjects this Collection by Issue date Authors Titles Subjects this Collection by Issue date Titles... Site uses cookies to assist with navigation, analyse your use of our services, and provide from. To form on the thermoelectric effect in most materials is extremely small is not by. Best ’ thermoelectric material because of its advantageous electronic structure and properties of New materials 's centers! Conductivity. at 500 degrees Celsius, the layers start to self-organise and the was... Experience possible recipient know who sent the email navigation, analyse your use of our services, and content! Search continues for suitable thermoelectric materials among more abundant non-toxic elements difference generates an electric current used to... 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The crystal structure of tin selenide ( SnSe ) is a promising thermoelectric material because its..., manufacturing and processing of raw and industrial materials this field is attributed to an ultralow thermal conductivity that from. This field the enhanced electrical transport properties and reduced lattice thermal conductivity that arises from in! This process, phase transition or re-arrangement of the anharmonic nuclear motion the. An evacuated quartz tube how efficiently a material converts thermal energy to electrical energy of... Experience possible to SnSe thin films during material synthesis can further optimize its thermoelectric properties elements, which an. Self-Powered sensor may be reproduced without the written permission crystalline structures such as exhausts! Collection by Issue date Authors Titles Subjects this Collection by Issue date Authors Titles Subjects this by. 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