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. Polycrystalline Cu 2 Se has been reported to have a peak ZT of 1.5 at T = 1000 K for high temperature β phase with … Abstract. "Thin Film Tin Selenide (SnSe) Thermoelectric Generators Exhibiting Ultralow Thermal Conductivity." Tin is often part of complex multi-component materials developed to convert heat energy, especially waste heat, into useful electricity, known as thermoelectric materials. Keywords. The record ZT is attributed to an ultralow thermal conductivity that arises from anharmonicity in bonding. This extremely large thermoelectric effect is related to a phase transition or re-arrangement of the crystal structure of tin selenide. While it is known that nanostructuring offers the prospect of enhanced thermoelectric performance, there have been … 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.The record ZT is attributed to an ultralow thermal conductivity that arises from anharmonicity in bonding. 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. moments. The information you enter will appear in your e-mail message and is not retained by Phys.org in any form. This is the highest value reported to date. 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. 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. 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. The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. 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 selenide (SnSe) is a narrow band gap, binary IV−VI semiconductor, suitable for various optoelectronic applications like memory switching devices, photovoltaics, and light emitting devices. SnSe is characterized by 24, pp. All of QMRO Communities & Collections By Issue Date Authors Titles Subjects This Collection By Issue Date Authors Titles Subjects ‌ ‌ Administrators only. Tin is often part of complex multi-component materials developed to convert heat energy, especially waste heat, into useful electricity, known as thermoelectric materials. 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). Show simple item record. This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties. Credit: HZB. The content is provided for information purposes only. At 500 degrees Celsius, the layers start to self-organise and the heat conduction decreases, while charge carriers remain mobile. The thermoelectric efficiency is determined by the device dimensionless figure of merit ZT dev, and optimizing this efficiency requires maximizing ZT values over a broad temperature range. and Terms of Use. Tin selenide might considerably exceed the efficiency of current record holding thermoelectric materials made of 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]. Advanced Materials 0(0): 1801357. which has been published in final form at 10.1002/adma.201801357. Tin is often part of complex multi-component materials developed to convert heat energy, especially waste heat, into useful electricity, known as thermoelectric materials. So the search continues for suitable thermoelectric materials among more abundant non-toxic elements. In this process, phase transition may induce an unexpected consequence under certain conditions. Most Popular Items Statistics by Country Most Popular Authors. This nanosheet network causes the ultralow thermal conductivity of tin selenide (SnSe) to be reduced to around a third of single crystal values.